Hi everybody,
Since the TP2 is using a whole lot more power than my old HTC Universal, I am looking for a decent Solar charging solution for on my bike.
TomTomnavigator + GPS use more than 500mA (I mean when I put in a car charger of this type hte phone says "insufficient current to blablabl")
I surfed the net, but decent info is hard to find about this specific problem. I mean I want to plug my phone in the solar charger and KNOW that it will give sufficient powersupply to charge the battery (or at least keep it at the same level)
Anybody an idea or maybe a link to a DECENT site (with CORRECT technical info)? Commercial sites with the best product ever, i have seen enough until you test it!
thanx to all!
Kjoere
I have one of these that I got on Amazon for 80 bucks and I love this thing! It also acts as a spare battery, and you can adjust the voltage. I brought it with me when I went camping. It's definitely worth it.
http://www.icetechusa.com/catalogue-solar-167464-spec.html
I've tried several of the cheap Chinese solar chargers and also a Solio, and they are all crap
Solar charger need direct sunlight. If cloudy, they can take a few days (daylight days not 24hr days!) to charge. So unless you live on the African Savanah where it will charge in 7 hours, then you will have a long wait.
I put my Solio on my window cill in January this year, and by the midle of February it got a full charge. I kid you not
You are probably much better off with a external power pack that uses 1 or 2 standard AA batteries or a minimum 2000mAh lithium battery
This solar 'card' from Swiss batteries looks interesting.
A 1mm thick bendable, weather-proof card of more efficient modern solar cell technology, with a claimed [up to] 40% greater efficiency than other cells. A portable battery option (as with the power monkey ) is also available.
And check out the solar bags on their site too!
PaulusUK said:
You are probably much better off with a external power pack that uses 1 or 2 standard AA batteries or a minimum 2000mAh lithium battery
Click to expand...
Click to collapse
Where might I get an external power pack with more than one AA battery? I can only find 1xAA packs, and I can't imagine a little old alkaline AA could produce NEARLY enough current at 5v to charge our beefy phones. Not for any amount of time, anyway, and not without heating up to what I would consider dangerous levels...
godefroi said:
Where might I get an external power pack with more than one AA battery? I can only find 1xAA packs, and I can't imagine a little old alkaline AA could produce NEARLY enough current at 5v to charge our beefy phones. Not for any amount of time, anyway, and not without heating up to what I would consider dangerous levels...
Click to expand...
Click to collapse
I'm afraid too that alcaline AA's won't do the job pretty well, although rechargeable NiMh could be worth a try
For outdoor-recharge, I'm using this general USB-charger featuring a rechargeable 2200 mAh 18650 LiOn battery:
http://www.dealextreme.com/details.dx/sku.18883
It has the advantage that you can change the 18650 easily, thus enabling you to take several ones with you for long voyages
MeCry
godefroi said:
Where might I get an external power pack with more than one AA battery? I can only find 1xAA packs, and I can't imagine a little old alkaline AA could produce NEARLY enough current at 5v to charge our beefy phones. Not for any amount of time, anyway, and not without heating up to what I would consider dangerous levels...
Click to expand...
Click to collapse
This is the best on I have found
Its a massive 3400mAh with a 5v 700ma output so will charge most phones and other gadgets no problem. It is just a bit smaller than the TP2 so is easy to carry around in a pocket
I got mine off ebay for less money - same unit but a different manufacturer. AFAIK, these are commonly rebranded, but look for the shape and the 3400 mah spec.
Most of the other Chinese ones from places like Dealextreme are lower capacity
I was really hoping for something using standard AA (maybe NiMH, 4 of those would be 4.8V).
In fact, 2xAA NiMH should be able to deliver the sort of current we're talking about here, right?
And, sure enough, Here is someone that's built exactly what I want. Who wants to assemble me one?
One product springs to mind: The powermonkey-eXplorer
https://powertraveller.com/iwantsome/primatepower/powermonkey-explorer/
thanx roger
I got an Energizer 2xAA charger, and it works on my TP2 absolutely fine. You need to use good quality batteries in it, but it's fairly compact and keeps the battery topped up while I'm out using the GPS with no car nearby!!!
http://www.google.co.uk/products?hl...a=X&oi=product_result_group&ct=title&resnum=4
gringolian said:
I got an Energizer 2xAA charger, and it works on my TP2 absolutely fine. You need to use good quality batteries in it, but it's fairly compact and keeps the battery topped up while I'm out using the GPS with no car nearby!!!
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Click to collapse
Energizer says it needs Lithium batteries (which I think are 1.7v), have you tried with NiMH perhaps (which are 1.2v)? I'd think it'd figure the batteries were empty even when they were newly charged.
godefroi said:
Energizer says it needs Lithium batteries (which I think are 1.7v), have you tried with NiMH perhaps (which are 1.2v)? I'd think it'd figure the batteries were empty even when they were newly charged.
Click to expand...
Click to collapse
I've got standard Duracell 1.5V alkaline batteries in it right now, and it charges it just fine! I think energizer say that to make you buy their ridiculously expensive lithium batteries!!
Related
Has anyone bought a solar charger for the G1? I'm going camping for 2 weeks soon and have been looking at the chargers but not sure about them. Anybody have good experiences with any of them? Satisfied with the performance and charge time? I've a 2600 mAh seidio battery.
Solar Powered Charger
Well, I was browsing around one of the numerous Chinese websites that sell random no-brand parts and accessories, and stumbled upon this:
http://www.davismicro.com/products/product_1950.htm
It is a solar powered charger, and based on the specs, it says it can charge a RAZR V3. If I am not mistaken, charging specifications on the RAZR are similar to that of the G1. Any ideas? I couldn't use this, living in Oregon I would probably have to put this on the roof surrounded by mirrors.
dont get it. i got one from best buy and it sucked. never chared my phone once.
BestBuy sells this kinda stuff??
Awesome this is whats needed
I wouldn't bothewr with something cheap like that.
A Friend in OZ got something very much like that and it was rubbish and just wouldn't charge anything so he got one like mine.
A freeloader: http://www.hookarama.com/items/1925_1216480SIL
There's probably better sellers than that and it's a bit more expensive than the cheap ones but you get what you pay for.
Tha advantage of this one is that it has a built in battery and removeable solar panels so once it's charged it's battery you can remove the panels and just take the little battery pack with you.
Charges the G1 just fine too!
Phil
http://www.google.com/products?q=Solar+mobile+charger&oe=utf-8&hl=en&scoring=p
Quite a few.
-bZj
Free Loader
I have a Free Loader Solar Charger, and this is my experience:
The device itself is a couple of centimetres longer than the G1 and the same width/depth and well designed, it comprises of a battery and two solar panels that click onto the battery. It come with 12 different adapters making it very versatile.
The two small solar panels that attach to the device are very small and it takes about 2 days of (admittedly dull) English sunshine for it to reach a full charge. this is pretty impractical.
I purchased a larger solar panel produced by the same company, it has a USB port, so if you know how you could put a usb port on any solar panel and use it to charge this battery via traditional USB to mini USB. On a sunny day this larger panel took only 3 hours to reach a full charge. Making the device very practical and usable.
However even a full charge of this battery achieved via charging from computer USB will only power the G1 up to 60% battery level.
This is purely anecdotal but I get the feeling that this charge then runs down quicker than when i charge direct from USB or mains. Is this just me or could there be an explanation for this?
I use it by charging via the computer and then taking it along as a second battery. In an emergency a few hours of sunshine even with dull light will give just enough for a phone call.
********
UPDATE 1/10/2012
This below charger and USB adapter WORKS LIKE A CHARM!!!
Charged fast... from 20percent to 100 percent in 2 hours!!!!!
I can now STOP using the OEM charger which is crap!
Admin: Please add this to the list of working prime accessoriesMy first transformer Prime had charging issues, ( would not charge intermittently) and I found the OEM charger that ships with the prime to be sub-par.. So:
After checking out NUMEROUS threads, I just purchased the following charger and USB adapter from Radio Shack to Use with my Prime:
This particular model has been confirmed to work on the original Transformer-
Enercell AC to DC power adapter 12vdc 1.5A
Radio Shack Model # 273-358
http://www.radioshack.com/product/index.jsp?productId=3807944
used together with this USB adapter:
Model #273-227
http://www.radioshack.com/product/index.jsp?productId=3643549
Does anyone know if the above Enercell 12V 1.5A charger should work on the Prime?
see post #104 here in this thread:
http://forum.xda-developers.com/showthread.php?t=1087321&page=11
Also, can someone confirm the Tip polarity I should use? (I believe the prime uses Positive tip polarity just like the original transformer did?)
http://www.12volt-travel.com/knowledgebase/universal-adapter-tip-polarity/
Thanks for any feedback!
********
UPDATE 1/10/2012
This above charger and USB adapter WORKS LIKE A CHARM!!!
Charged fast... from 20percent to 100 percent in 2 hours!!!!!
I can now STOP using the OEM charger which is crap!
Admin: Please add this to the list of working prime accessories
********
UPDATE 1/10/2012
This above charger and USB adapter WORKS LIKE A CHARM!!!
Charged fast... from 20percent to 100 percent in 2 hours!!!!!
I can now STOP using the OEM charger which is crap!
The charger doesn't even get barely warm while it charges... much better than OEM for me!
Admin: Please add this to the list of working prime accessories
I thought I read somewhere that fast charges aren't good for the long term viability of lithium-based batteries.
---------- Post added at 07:27 PM ---------- Previous post was at 07:25 PM ----------
http://batteryuniversity.com/learn/article/how_to_increase_the_runtime_of_your_wireless_device
Simple Guidelines to Prolong Lithium-ion Batteries
Do not discharge Li-ion too low; charge more often.
A random or partial charge is fine. Li-ion does not need a full charge.
Limit the time the battery resides at 4.20/cell (full charge), especially if warm.
Moderate the charge current to between 0.5C and 0.8C for cobalt-based lithium-ion. Avoid ultra-fast charging and discharging.
If the charger allows, lower the charge voltage limit to prolong battery life.
Keep the battery cool. Move it away from heat-generating environments. Avoid hot cars and windowsills.
High heat and full state-of-charge, not cycling, cause short battery life in laptops.
Remove battery from laptop when used on the power grid.
Click to expand...
Click to collapse
Yeah, I would avoid third-party chargers. Have had a lot of problems with them for laptops.
clankfu said:
Moderate the charge current to between 0.5C and 0.8C for cobalt-based lithium-ion. Avoid ultra-fast charging and discharging.
Click to expand...
Click to collapse
Taking 2 hours to charge implies a 0.5C charge rate.
What's the rated voltage, current and wattage of the stock charger anyway?
Please note that the above charger won't work overseas. It's only got 110V.
webbrowser said:
Taking 2 hours to charge implies a 0.5C charge rate.
What's the rated voltage, current and wattage of the stock charger anyway?
Click to expand...
Click to collapse
Stock charger is rated 15 volts DC @ 1.2 Amps
This radio Shack charger That is working for me is rated 12volts DC @ 1.5Amps.
I read the Transformer specs required to chagre are 11V to 15V DC @ 1A to 2A max
This charger fits within these specs, so that is why it works pretty well. The TP and the charger itself do not get hot at all, so I don't think this is causing any issues with the battery. Does anyone think a slightly quicker charge time will harm the battery long term?
Li-Ion Batteries are sensitive to fast charging. While it is within specs, your long term battery life could be affected. There is probably a reason that Asus decided to stay at the very bottom end of the spec.
nslayden said:
Li-Ion Batteries are sensitive to fast charging. While it is within specs, your long term battery life could be affected. There is probably a reason that Asus decided to stay at the very bottom end of the spec.
Click to expand...
Click to collapse
I have done additional research due to above feed back in regard to Li-Ion's sensitivity with faster chargers.
Apparently, you are correct in regard to long term battery life concerns. I have only done 3 charges so far with the Radio Shack charger. I will let it drain down and switch over to the stock for now and just keep this other one as a backup. Is charging at 300MA more than OEM that much more of significant concern?
Better safe than sorry. Hopefully the few charges I have done did not cause any harm.... If the stock charger goes bad again though, I don't know if I would buy another one....
What was interesting is how hot the stock charger becomes in comparison to the radio shack model, which barely gets even warm. I always was a believer that more heat means less efficiency, so I'm somewhat confused, but I don't want to risk shortening the battery life, so I will go back to OEM stock charger for now, but reluctantly.
I wonder How these "alternative" chargers have effected the batteries for others with the original transformer?
That's an expensive charging setup... nearly $40 eek
mazjohn said:
I have done additional research due to above feed back in regard to Li-Ion's sensitivity with faster chargers.
Apparently, you are correct in regard to long term battery life concerns. I have only done 3 charges so far with the Radio Shack charger. I will let it drain down and switch over to the stock for now and just keep this other one as a backup. Is charging at 300MA more than OEM that much more of significant concern?
Better safe than sorry. Hopefully the few charges I have done did not cause any harm.... If the stock charger goes bad again though, I don't know if I would buy another one....
What was interesting is how hot the stock charger becomes in comparison to the radio shack model, which barely gets even warm. I always was a believer that more heat means less efficiency, so I'm somewhat confused, but I don't want to risk shortening the battery life, so I will go back to OEM stock charger for now, but reluctantly.
I wonder How these "alternative" chargers have effected the batteries for others with the original transformer?
Click to expand...
Click to collapse
I wouldn't worry if I were you. What you bought is just an adapter with a USB socket. The part which decides how to charge the battery is inside the tablet. The requirement for the adapter is to have the same voltage as the original one and at least as much current ( meaning 1.2A or more). The tablet will only take what it needs.
Be careful http://m.youtube.com/#/watch?desktop_uri=/watch?v=SMy2_qNO2Y0&v=SMy2_qNO2Y0&gl=US
susko said:
Be careful http://m.youtube.com/#/watch?desktop_uri=/watch?v=SMy2_qNO2Y0&v=SMy2_qNO2Y0&gl=US
Click to expand...
Click to collapse
It's always easy to scare people. It does say in the description of the movie that he did it by removing the protection circuit. They are designed with protection, so of course they will blow up without one.
Dude why so serious?
It was a joke thus a smiley was implemented. It is quite difficult to do that to a battery. Although I have seen some insane people in the RC hobby community destroy expensive cars and helicopter this way.
Lipo+ignorance=Hollywood style explosions
I saw the smile, don't worry. It is just that most of people, especially when they do not have the knowledge about something, tend to see the bad part (I'm also guilty of this, not in this domain though ).
So, it was not anything against you, the video is entertaining. I just wanted to put people at ease.
Charging Issues
It does not matter the type of rechargeable battery, any "quick charge" will reduce the battery life. I personally don't think 300mA is that much of a difference, but am sure the battery life would be reduced somewhat over time. Nor would I worry much from just 3 charges.
However I don't think we should have to shell out an additional $40 just because Asus can't build quality components. Mine quit charging consistently yesterday (week and a half). I guess we can put it in the same category as GPS...non professional and spotty at best.
EatMy45 said:
However I don't think we should have to shell out an additional $40 just because Asus can't build quality components. Mine quit charging consistently yesterday (week and a half). I guess we can put it in the same category as GPS...non professional and spotty at best.
Click to expand...
Click to collapse
Don't worry, ASUS will remove the charger from the SPECs and say it is no longer supported, problem solved...
Does anyone know if the charger pack u charge to act as a charger for your phone (when not near electricity)is compatible with the note? I've seen them but i didn't know if they are compatible with the note since it has such a large battery. Also does anyone have a link to one?
Sent from my Galaxy Note
I just bought this Anker one from Amazon. Reviews are almost overwhelmingly positive and I can confirm that it does work on the Note just as well as it works on my Atrix 4G.
http://www.amazon.com/Anker-5600mAh...5?s=electronics&ie=UTF8&qid=1330474615&sr=1-5
Does the higher the amount of mah on the battery pack equate to numerous recharges for your phone(depending on the phone's battery mah)?
Sent from my Galaxy Note
Yup. It's just shy of three full charges for my Atrix, which has a ~1900mAh battery. Should be two charges for a Note, give or take a little bit.
That's great! I just saw one on amazon with 11200 mah for $69 i think im going to get it.
Sent from my Galaxy Note
How long is the charge time on yours? I've never had one so i don't the slightest idea of how long it could take to charge one.
Sent from my Galaxy Note
I was going to get that one, but it was just too huge. I can slip the Anker 5600 I bought into a jacket or pants pocket with the cable and it's just fine. No problems with portability. Charge time is equal to what it'd be from an AC charger in my experience so far, but I only got mine a few days ago.
I meant wats the charge time of the battery pack?
Sent from my Galaxy Note
Haha...sorry. It was about half-charged when I got it (2/4 indicator lights) and took two hours to charge to four lights.
I got the mycharge ones since the cables are built in. 3Ah and 6Ah depending on my needs (1 or 2 nights). I like them even though they aren't 10Ah monsters.
Sent from my Samsung Galaxy Note
Just ordered the anker. I appreciate the info.
Sent from my Galaxy Note
Does it hold the charge or do you constantly have to recharge it?
Sent from my Galaxy Note
Most portable USB battery chargers do not support the signals that allow the Note to go to high current charge mode. Pins 2 and 3 of the USB connection need to be shorted with a low resistance. The Note senses this and switches on a high charge otherwise, it will stick to a standard USB charge of less than 500ma even if the battery charger can put out 1A.
I bought a Scosche 5000 mah portable battery charger that comes with a special USB adapter designed for the Galaxy Tab. I tested it with my Note. With the adapter, the Note charges in under four hours. Without the adapter, it takes overnight to charge the Note even though the Scosche has a USB port that puts out 2.1A to charge an Ipad.
Staples sells the Scosche battery for $80 but there is a $29 online coupon that is good until 3/5/2012.
Hmm... I have a rechargeable battery from Monoprice that I use with my iPhone 4 but I haven't tried it with my Note yet. It will probably only charge the battery about half way. Monoprice has good cheap rechargeable batteries to charge on the go if anyone is looking for something similar.
After a few more days with the Anker, it charges my Atrix and my Vivid at least as fast as my AC charger. Probably placebo effect, but it honestly feels like it charges it faster.
Why not just carry a couple of extra batteries and get a charging station for them? Seems cumbersome to have to have one of these attached to your device when you need more juice, when swapping out a battery is quick and has an instant full charge...?
welchertc said:
Why not just carry a couple of extra batteries and get a charging station for them? Seems cumbersome to have to have one of these attached to your device when you need more juice, when swapping out a battery is quick and has an instant full charge...?
Click to expand...
Click to collapse
+1^^^
If you're gonna carry something anyway you might as well just have a single, spare battery instead of a power pack plus a cable. The Note has such an easy back to pull off and swap. Bing-bang-boom.
kimtyson said:
+1^^^
If you're gonna carry something anyway you might as well just have a single, spare battery instead of a power pack plus a cable. The Note has such an easy back to pull off and swap. Bing-bang-boom.
Click to expand...
Click to collapse
As someone who used to do this exact same thing with the captivate, it's definitely convenient to carry, however the interruption while you take off the case, remove the cover, replace the battery/reboot, can get annoying especiallky if you're right in the middle of doing something.
I'm getting ready to take a long plane flight, and I bought some battery packs from monoprice just now, with the intention of using one of them up front while I use the phone, so we'll see how that goes.
brookssw said:
As someone who used to do this exact same thing with the captivate, it's definitely convenient to carry, however the interruption while you take off the case, remove the cover, replace the battery/reboot, can get annoying especiallky if you're right in the middle of doing something.
I'm getting ready to take a long plane flight, and I bought some battery packs from monoprice just now, with the intention of using one of them up front while I use the phone, so we'll see how that goes.
Click to expand...
Click to collapse
Note sure if it's just me, but the minute or so that my phone is down to swap the battery and reboot seems much more appealing and convenient than having a battery pack dangling by a cord from my phone for multiple hours while it charges, or keeps it charged.
Not to mention how many spare batteries you could buy for the price of one external battery pack.
welchertc said:
Note sure if it's just me, but the minute or so that my phone is down to swap the battery and reboot seems much more appealing and convenient than having a battery pack dangling by a cord from my phone for multiple hours while it charges, or keeps it charged.
Not to mention how many spare batteries you could buy for the price of one external battery pack.
Click to expand...
Click to collapse
I actually agree partially, however I just found out that monoprice.com sells 2800mah battery packs for like $13 each. I just bought three:
http://www.monoprice.com/products/p...=10833&cs_id=1083311&p_id=7664&seq=1&format=2
That said, I likely will still buy an extra regular battery that I can just carry in my pocket. The main reason I'm going with the external batteries is because I'm getting ready to go on a trip with 15 month old twins to europe, and I can use these external packs to power up both my phone, and my touchpad (Which I need for playing childrens shows)
I'm looking for an external battery charger (preferably solar powered) for taking my Note on backpacking trips. Unfortunately, most of the solar packs that I've found have only .5 - .7 amps available for USB output. If I'm using a 1amp charging cable (with the data leads shorted), will .7 amps kick in the AC charging speed? Is .5 amps enough to charge the phone while I sleep for 7 hours?
I suppose it depends on how long you are out without power but another alternative is an external battery that allows you to charge your phone by plugging it into the external battery.
This one here (at $75 USD) will let you charge the Note from completely dead to a full complete charge 4.4 times.
http://www.amazon.com/New-Trent-IMP...Z64Q/ref=sr_1_2?ie=UTF8&qid=1336084828&sr=8-2
So, if you started your backpacking with a full charge on both the phone and the battery pack, and assuming you charge the phone every night at say 20% battery left, you should get 6 days. If you need more than that, you can just buy a second battery pack (personally, Id want to have two just in case).
That's a good suggestion from littlewierdo. I would also have at least 2 spare batteries for the note. I don't think that .5 amps is enough.
Budge said:
I'm looking for an external battery charger (preferably solar powered) for taking my Note on backpacking trips. Unfortunately, most of the solar packs that I've found have only .5 - .7 amps available for USB output. If I'm using a 1amp charging cable (with the data leads shorted), will .7 amps kick in the AC charging speed? Is .5 amps enough to charge the phone while I sleep for 7 hours?
Click to expand...
Click to collapse
Budge I had an HTC evo 4g and got a 5400mah battery. This worked ok. However the output is .5a which will not charge the note if you are using maps with gps or bluetooth or playing tunes. It wil charge when not using those. Say at night when you are asleep. I think you would have to find a battery with output better than 1a to actually charge when you are actively using your phone. I am not sure of the actual output you would need. I will research it though for my own needs. I do use my note on my motorcyle with a charger which outputs .5a and this is nowhere near what is needed to use google maps and bluetooth and play tunes.
I am actively looking for a solution which will charge my note while using google maps, bluetooth, and playing tunes etc. I may have found a solution with a usb y cable which is connected a 2a source and a .5a source on my motorcycle.
The only solution for backpacking may be to charge when not using the note. I am fairly sure it will charge at .5a when sleeping.
Good luck.
kimtyson said:
That's a good suggestion from littlewierdo. I would also have at least 2 spare batteries for the note. I don't think that .5 amps is enough.
Click to expand...
Click to collapse
imesg said:
I am actively looking for a solution which will charge my note while using google maps, bluetooth, and playing tunes etc. I may have found a solution with a usb y cable which is connected a 2a source and a .5a source on my motorcycle.
Click to expand...
Click to collapse
Im not sure where you got the .5 amps from, it outputs 1 amp, so it will charge the Note with the screen on. However, it wont charge quite as fast as the wall charger will it will actually charge the phone.
It should be able to handle keeping the screen on, bluetooth doesnt use much power at all so playing music shouldnt be an issue and gps uses very little battery as well. I dont see an issue with it.
Admittedly, I dont have one of these, dont really have much of a use for one at the moment but I cant possibly see any issues with this.
HOWEVER, there are alternative external battery packs that are MUCH cheaper with less mah capacity (meaning, in simple speak, you would get less power storage meaning that you wouldnt be able to charge your phone as many times as you might like). There are other USB battery packs that might also have less power output (or more) which might mean that you wouldnt be able to keep the screen on AND charge the phone.
Truth be told, I only looked for the highest capacity battery pack given what your situation was AND I tend to buy higher end if the price makes sense. In the case of battery packs similar to this design (external usb battery packs), they generally start at $30 and go to about $80 so buying the best possible makes sense. However, if the highest/best possible was $200, Id probably get something cheaper, but since its only ~$80, if I were in your shoes, that would be my choice.
Id probably consider getting two of them (that is, if we are talking about longer than 1 week excursions, if under a week, just get 1) and a decently long usb cable (3-4 ft) but not too long (you dont want to be tripping over the cable but you need it long enough that if you need to, you can charge the phone mid-day while hiking).
You dont need multiple batteries for the Note, the whole point of this external battery pack is to eliminate the need for them.
littlewierdo said:
Im not sure where you got the .5 amps from, it outputs 1 amp, so it will charge the Note with the screen on. However, it wont charge quite as fast as the wall charger will it will actually charge the phone.
Click to expand...
Click to collapse
littlewierdo I was not necessarily speaking of the device you suggested but one I had. I was warning Budge to be careful and not get a device which outputs only .5a. I was suggesting that he find one which will put out 2a if such exists. The device which you suggested will put out 1a. However I don't believe this would be enough for my purposes and maybe no Budge's either. i was not refering to your device or you. Not my intent to get in an argument with you but to help Budge find a suitable solution.
link to imp1000 manual:
http://www.google.com/url?sa=t&rct=...sg=AFQjCNFPt8XfUpeSr8olPnKLYCivrRvqFg&cad=rja
Couldn't make the link post as a link. Do a search for 'imp1000 manual'.
Ciao
Littlewierdo- I didn't disagree with your suggestion to use another battery pack to charge the existing battery. In fact, I have one and use that option myself. I was adding that it may be a good idea to have a spare. I was responding to the OP who mentioned .5 amps. I assume that's where imesg was coming from, too.
I was looking for a portable power source for my tablet. Most of the reviews for these devices are not too good and I believe the batteries used are mostly the reason they are not reliable.
I bought two Chinese units called Power Bank with a capacity of 13800mah. I charged them to capacity and after charging the tab from 30% back to 100% they were nearly empty. Since the Tab has a battery rated at 4000mah this does not seem correct.
One unit had five 18650 cells in parallel (blue cells pictured below) and the other unit had two square cells (pictured below) tied together. I tested both battery packs and they were not near the rated value of 13800mah.
When I bought these two units my plan was to replace the Chinese cells with Panasonic NCR18650A cells (green cells pictured below). They now charge the tab twice and my phone 1 1/2 times too. I would rate the unit at about 10,000mah and not 15,500mah. Since the modified unit uses a 1A 5V USB type charger it takes a long time to get these two guys completely charged. But so far they are working great and the modification was pretty easy.
I bought my cells from a distributer here in the US that includes the cells with tabs (in picture below covered by black shrink tubing) at a small additional charge. Soldering on cells will destroy a battery very quickly. The tabs are welded with a machine specifically made for attaching tabs to the cells.
I paid $34.00 for the Chinese unit and $75.75 for the five cells. I hope the internal Chinese logic cards hold up for at least a few years. I know the batteries are good for about 1000 full discharges/recharges.
I use one and my gal uses the other one, they have 120 days use now.
:good:
bark777 said:
I was looking for a portable power source for my tablet. Most of the reviews for these devices are not too good and I believe the batteries used are mostly the reason they are not reliable.
I bought two Chinese units called Power Bank with a capacity of 13800mah. I charged them to capacity and after charging the tab from 30% back to 100% they were nearly empty. Since the Tab has a battery rated at 4000mah this does not seem correct.
One unit had five 18650 cells in parallel (blue cells pictured below) and the other unit had two square cells (pictured below) tied together. I tested both battery packs and they were not near the rated value of 13800mah.
When I bought these two units my plan was to replace the Chinese cells with Panasonic NCR18650A cells (green cells pictured below). They now charge the tab twice and my phone 1 1/2 times too. I would rate the unit at about 10,000mah and not 15,500mah. Since the modified unit uses a 1A 5V USB type charger it takes a long time to get these two guys completely charged. But so far they are working great and the modification was pretty easy.
I bought my cells from a distributer here in the US that includes the cells with tabs (in picture below covered by black shrink tubing) at a small additional charge. Soldering on cells will destroy a battery very quickly. The tabs are welded with a machine specifically made for attaching tabs to the cells.
I paid $34.00 for the Chinese unit and $75.75 for the five cells. I hope the internal Chinese logic cards hold up for at least a few years. I know the batteries are good for about 1000 full discharges/recharges.
I use one and my gal uses the other one, they have 120 days use now.
:good:
Click to expand...
Click to collapse
Or you could buy one of these for about $60 and charge / operate your tablet for over 50 hours.
http://www.amazon.com/APC-BE550G-Ba...ref=sr_1_1?s=pc&ie=UTF8&qid=1350776129&sr=1-1
Too funny...13 pounds or 11 ounces, I guess you missed the portable part or maybe you are a world class weight lifter...Thanks for the giggle.
:highfive:
This one worked for me
http://www.jr.com/scosche/pe/SCE_IPDBAT2/
I got this battery. It comes with a voltage adapter for the GTab2. I found that I actually didn't need it with this battery. However, another 2.1A battery that I have did not work with my GTab2, and this adapter makes it work. I'm hoping it will also make a 2.1A car USB charger work with my tablet as well. I'm waiting for its arrival and will test when I get it.