Got my second Prime, after having to send back the first one. But this time the charger was defective. I have been able to charge it a bit by using the USB on the PC, so-called trickle charge, but I did not charge it properly before first time use (the eight hours recommended). The tablet was slightly used, slightly charged, slightly used and charged to exactly 100% through computer's USB. The dock won't trickle charge at all and has now 0% power.
I can send in the charger back and receive a new, but this will take one to two weeks. So I won't be able to charge the dock at all in a couple of weeks and it will be stored with 0 % battery power. The tablet would have to do with the trickle charge.
I then wonder how damaging this could be the battery? I do not want to take any chances and end up with a crappy battery after a year or two. I have read a lot on the internet, but people are very inconsistent about whether a Li-ion battery will be damaged without proper first time charging or not, and lying around for a couple of weeks with zero battery power.
Thanks in advance!
LightlyX said:
Got my second Prime, after having to send back the first one. But this time the charger was defective. I have been able to charge it a bit by using the USB on the PC, so-called trickle charge, but I did not charge it properly before first time use (the eight hours recommended). The tablet was slightly used, slightly charged, slightly used and charged to exactly 100% through computer's USB. The dock won't trickle charge at all and has now 0% power.
I can send in the charger back and receive a new, but this will take one to two weeks. So I won't be able to charge the dock at all in a couple of weeks and it will be stored with 0 % battery power. The tablet would have to do with the trickle charge.
I then wonder how damaging this could be the battery? I do not want to take any chances and end up with a crappy battery after a year or two. I have read a lot on the internet, but people are very inconsistent about whether a Li-ion battery will be damaged without proper first time charging or not, and lying around for a couple of weeks with zero battery power.
Thanks in advance!
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Before sending the charger in try putting in a plastic bag and place it in the freezer for about 20 minutes. Get as much air out of the bag as possible. It could be the chargers safety has been tripped and its stuck.
they recommended the battery be fully charged up when first recieced. they say 8hrs. but that's way too long. only takes about 2 hrs. for battery to fully charge through its power plug. once fully charged battery will need To go through a few complete cycles(from 100% to 0% or close) before the battery is properly calibrated and optimized.
I wouldn't think trickle charging the prime will hurt anything as long as you still going through cycles. if you only can trickle charge right now, might be best not to let prime go completely dead. just charge once its low or whenever not in use. how long did it take to charge battery completely up through trickle charge?
As far as I know trickle charge is even better for Lithium batteries, and provides longer battery times and less wear-and-tear on the battery.
Tried the freezer. It would charge for a couple of minutes, then stop again. But it gets pretty hot, so I would thinks it's overheating.
Don't know how long the trickle charge takes. I charged it for maybe four hours from 60 %, but don't know when the charge was complete.
And as I said, I used the prime for a bit, turning it on and off, tryinging to get the charging to work. I first charged it completely after 2 days. And the dock got dischared at once since connected it to the tablet at once, and left it for 8 hours because I thought it was charging. Haven't been able to charge the dock since...
Trickle charging is actually better for your devices than charging with a rapid charger. It both prolongs the overall life of the battery and can lead to "deeper" charging where the batter actually ends up with a slightly higher stored charge which would give you slightly longer battery life.
As for the charger, if you live near an OfficeDepot they might have some in-store so you can pick up a replacement for around $30. You can also get them online from the OfficeDepot website: http://www.officedepot.com/a/products/768723/ASUS-Power-Adapter-For-Eee-Pad/
Even if you get your charger back from RMA, it is good to have a spare charger lying around!
Related
Getting my replacement today and my current phone has suffered from bad battery, so what is the best way to charge the new one please?
Thanks
I charge mine overnight most nights, and it gets better over time. It took a couple of weeks before I started to get really good life out of it.
Based on what I've read, you should charge for at least 3hrs and then drain it completely.
But I'm pretty sure you can still use it right out of the box
I don't think any extra/time specific charging is needed for Lithium batteries for the first charge. Just unplug it when charging completes. But if you calibrate the battery make sure you fully drain it before recharging it.
Regards.
It doesn't matter, there is no need to bother about how to charge modern li-io batteries.
I don't think modern batteries need any kind of special first charge routine....................but I still do it anyway
WastedJoker said:
I don't think modern batteries need any kind of special first charge routine....................but I still do it anyway
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Just read about this earlier on my local samsung officially site and yes ever since it is lithium battery its ok to charge anytime afor how long even it already 100% and still on the charging mode ots automatically cut off the power supply inside. But i do still charge like 4-6hours for the 1st time
sent from my 2.3.3|dxjpe DJGTabs7
Just charge it to full, and then start using it, charging it overnight does nothing, the BMS will stop it from charging when the voltage coming from the battery is considered 100%.
Lithium batteries do not suffer memory effect like Nickel batteries.
The old charging practices cause more damage.
Lithium batteries should not be overcharged (Same as NiMh)
Lithium batteries prefer to be fully charged. If they stay on empty too long, they get damaged. Using the charge up before charging the battery can damage it, the optimal is to charge it before it gets low. Regardless how well you keep them, they have a predetermined life span, so they will stop working after a few years.
Thanks everyone I am going to charge it for about 6 hours, then calibrate then fully discharge and fully charge, Until o2 unlock it :'(
jameslfc5 said:
Thanks everyone I am going to charge it for about 6 hours, then calibrate then fully discharge and fully charge, Until o2 unlock it :'(
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Completely pointless....once it reaches 100% it stops charging.
Someone pointed out the same thing you all said i.e.modern li-ion batteries don't have a memory, they don't need to be formatted, however extreme conditions aren't healthy for them e.g. leave it completely depleted or completely charged for prolonged periods of time (days?).
i just charge mine to full the 1st time i get it while it is off and i am fitting screen protector etc
i then use it till its about 10% and charge to full
i then use it as normal and top up charge whenever
it may not be needed but batterys have always been good for me and its a little routine i seem to be stuck in lol
hope your new phone is decent and you enjoy
Okay so I've this problem where my battery discharges while charging!
I had this problem since wednesday that time I was on stock... So I thought flashing a custom ROM now as of now i'm on SonyStyle still the same problem,
let me elaborate my problem a bit more
-To monitor how much current is discharging n charging! -498 mA while discharging n -298 mA while charging it normally
-So next thing I tried is to charge it while being switched off, most of the times it wont charge n when it'll charge it'll reach some point n starts discharging! Discharging even when its off and plugged to the charger! BIZZARE isnt it?
-Now in order to put it on chrging i've to reboot it couple of times untill battery monitor widget shows +current... N when it reaches 100 it'll begin to discharge like it'll be empty in 1nhalf hour
-ALSO I'VE TURNED OFF ANYTHING THAT SUCKS BATTERY! AND I'M NOT USING MY DEVICE WHILE CHARGING! ALSO IT DISCHARGES WHILE BEING ON CHARGER IN A switched off state.
these things i've already tried
-Flashing custom ROM
-Putting my cell on powersave CPU governor
-undervolting
-charging using USB
-CUSTOMER CARE CENTRE only resets the software
I'M SO FRUSTRATED THAT I'LL BURN THIS CELL INTO ASHES! Anybody help me before I kill thislil fellow!
You might try resetting your battery stats on clockworkmod or xrecovery. Charge until 100% and let it discharge naturally to switch off, allow a few days of charge cycling and it should be ok.
Lipoly batteries dont trickle charge. If you leave your phone on charge for 8 hours it will just switch off the charger, discharge for awhile and then switch back on the charger. Most take 1 to 1.5 hours to charge, so if you leave it plugged in you will be charging/discharging about 6 times in that period. Lipoly have a limited number of charges before they diminish, usually about 500. So if you leave it plugged in you can reduce your battery life span considerably - otherwise it should last a good year and a half before it wears out.
Dont ever try to trickle charge, overcharge or manually discharge a lipoly battery as they have a tendancy to explode.
The good news is lipoly batteries are cheap to manufacture. You should be able to pick up a decent bst-38 (or substitute) on ebay/amazon for around 15-20 euros. Dont be hoodwinked into the 2000mAh batteries, most are fake. My 970mAh can last 2 days on Gintonic rom.
Sent from my U20i using Tapatalk
I had a similar problem with the battery discharging whilst charging.
For me the problem turned out to be my USB cable becoming faulty. It would still transfer data when connected to a computer, but would get a similar problem to the one you describe when charging. Might not be the same problem for you though.
I am now experiencing this problem. I think it is my usb cable too. Will buy another 1 soon. It discharges then charges again when I pull out the cable and plug it in again.
Sent from my U20i using xda premium
Well already tried wiping battery stats
heres what I've discovered till now
-The charge current drops as if the battery is at 91% but it isnt even close
-It is either the battery is sending wrong data to charger, or it is faulty
-Not able to explain how n why it discharges even a switched off state???
-Only solution I can think is a charging dock for BST-38
obsidian_eclipse said:
You might try resetting your battery stats on clockworkmod or xrecovery. Charge until 100% and let it discharge naturally to switch off, allow a few days of charge cycling and it should be ok.
Lipoly batteries dont trickle charge. If you leave your phone on charge for 8 hours it will just switch off the charger, discharge for awhile and then switch back on the charger. Most take 1 to 1.5 hours to charge, so if you leave it plugged in you will be charging/discharging about 6 times in that period. Lipoly have a limited number of charges before they diminish, usually about 500. So if you leave it plugged in you can reduce your battery life span considerably - otherwise it should last a good year and a half before it wears out.
Dont ever try to trickle charge, overcharge or manually discharge a lipoly battery as they have a tendancy to explode.
The good news is lipoly batteries are cheap to manufacture. You should be able to pick up a decent bst-38 (or substitute) on ebay/amazon for around 15-20 euros. Dont be hoodwinked into the 2000mAh batteries, most are fake. My 970mAh can last 2 days on Gintonic rom.
Sent from my U20i using Tapatalk
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If I leave my cell on charging for 8 hours, then after 8 hours my battery will be zero... It'll keep blinking the red light for hour or more... See thats a wicked problem...
happened to me also, had to use a better cable (don't use thin and/or long cables)
Yeah I tried with a Nokia made cable and its charging flawlessly! This is my first time with a Non-Nokia n so far the experience is not very good!
btw thanxxx a lot for your attention n concern!
- similar (identical) problem, tried similar resolutions (factory reset/sdcard/sim removing/different chargers/battery replacement)
- disassemble my phone... and found out, that micro usb connector replacement is unrealistic.
- watched charge/discharge/voltage/current/temperature process trough battery monitor widget (1 minute sampling)..
- re-calibrated battery many times
RESOLUTION : micro usb connector or connections in mobo is dead. I build charger with current meter. No matter, what says my phone about charging (pluged in - discharging)- any information displayed delays for minutes on phone. IF my external current meter says - "charging", than phone state is "CHARGING" independent from what phone is displaying at the moment. Moving usb charging connector in phone causes current to stop flying to phone or reducing current value. Phone still says "plugged in" and or "charging" on "discharging"...
Temporary resolution: little pushing/deformation on charging connector (male) and LED in charging chain, witch is displaying - charging or not. Every time connecting charger i'm looking on indicator LED and moving charge connector, till LED says "charging" and then no more any moves on phone.
Future resolution: contact-less charging trough inductive coupling
It was around 36% when I was able to access the battery meter following initial startup.
Only took 3 hours till full charge over USB to Wall outlet.
Is this because the USB to Wall outlet is faster charge, and that the 8 hours suggested in the manual is for USB to PC charge?
I don't have my prime yet however, you need to let it charge for 8 hours, even if its fully charged. This will condition your battery. Your manual also states to let it charge 8 hours.
Personally, I think the whole "charge for 8 hours" thing is bunk. No idea why ASUS recommends it, and I can't remember any other manufacturer ever recommending such a long initial charge. I think ASUS just does it to be sure people charge it completely before using.
I mean, seriously, if ASUS was that worried about it they wouldn't design the Prime to turn on when first plugged in. And, I imagine that once the battery hits 100% (signified by the green charging light), there should be a cutoff. So I'm not really sure what charging for 8 hours (or, yes, about 5 hours after it hits 100%) accomplishes.
another reason I love this tab so much. it can go from 0%-100% in 3 hrs. my Ipad takes more than double that time to get full charge. maybe not that long...lol but you know what I'm saying. this also may hold the title of fastest charging tablet.
thanks guys im going to finally go mobile then. Its even showing 100% too.
wynand32 said:
Personally, I think the whole "charge for 8 hours" thing is bunk. No idea why ASUS recommends it, and I can't remember any other manufacturer ever recommending such a long initial charge. I think ASUS just does it to be sure people charge it completely before using.
I mean, seriously, if ASUS was that worried about it they wouldn't design the Prime to turn on when first plugged in. And, I imagine that once the battery hits 100% (signified by the green charging light), there should be a cutoff. So I'm not really sure what charging for 8 hours (or, yes, about 5 hours after it hits 100%) accomplishes.
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Every manufacturer recommends 8 hours AFAIK in their manual or support etc. This is to condition your battery and improve its lifespan. I've had a phone which I didn't charge for 8 hours on first charge, battery life completely screwed up within half a year.
Once it hits 100% you're good to go. After that it will stop charging for a bit then charge after a certain percentage drop. There will be no benefit to charging it after it hits 100%. With Li-Ion technology the whole battery conditioning thing is overblown anyways, these aren't old style NiCd or NiMH that need full draining and full charging everytime and storing with certain charge levels.
Sent from my Transformer Prime TF201 using xda premium
What is the best way to save the battery life, and made a charge lasting longer?
How long should we wait before recharging the Prime? I always wait until it reaches 20-25% before recharging.
I do this about every 2 days, and when I do not use it it's standby if short pause or shut down at night.
I saw a thread somewhere in the forum but could not find it.
I do not use +IPS and brightness is about 20-25...
Not gaming, just surfing and testing Skype with WiFi (BT is not good with WiFi) so it's off
Any help we good suggestions?
Thanks
Bimbobo
My charging habits are:
To keep the battery healthy, keep it cool, I almost never use the tablet while charging off the wall and always turn it off. I've checked the charger brick temp with an IR temp gun and the brick stays 10 to 15 degrees cooler while charging when my Prime is off. This will save the charger.
I usually wait until I am almost drained, usually anywhere from 1 to 20%. With lithium ion batteries there is no "memory" that develops so no worries there. Temperature is the mail killer of Li batteries. You can charge it any discharge state, again Li batteries don't care. I did an experiment and when the Prime is over 95% Even if you put it n the wall charger it doesn't charge. Once it drops below 95% it starts charging. Remember, this s MY Prime, your and everyone will be slightly different depending on the battery and how the software and hardware interact to provide battery conditions (temperature and %).
The dock changes the equation since it probably charges the Prime and a lower current then the wall charger so you can use it while charging. I don't have the dock so I cannot confirm this though. The Prime will charge of the PC USB but ALOT slower and the Prime has to be turned off
This is the way I do it. Everyone is different though.
Thanks,
I always shut down before charging, but it turns on on its own.
Always use the charger, never USB/PC
Yes I wait until 20%.. Temperature, well I never noticed an issue
The house is warm about 21 C, and I never use it in cars or outside.
The dock is not used too much, only few time, and even full charged it seems to drain pretty fast not in use.
I just ask because I can see that WiFi, brightness and standby are main cause for draining.
I cannot measure how long it lasts, and it's not an issue.
The question was just becaus a charge every 2 day.. normally is not a good way to preserve the battery.. But I am ignorant about this matter.
Charging time does seem to vary a bit. I would just charge your prime based on your needs. Li batteries have no memory, so charge it when it needs it. If you do leave your prime in the car, let your prime either warm up or cool down (or in other words, reach room temperature) before connecting to your charger.
Sent from my Transformer Prime TF201 using xda premium
Just gonna review some of the accessories I have used and what i think about 'em
First up is the 3500mAH extended battery by HHI
This battery came in at a cost of $9.99 with free Shipping! It showed up with an 80% charge which is in the acceptable range of where they like to sit. The battery performs just as one would expect it too. I am currently running MeanRom, and can easily get 16-20 hours of use with some really heavy gaming. However I recently went on a vacation and wanted to run the battery through a couple different variations of "discharging". So with the phone in Airplane mode(no radios connected) and very little use i easily can get a week out of the phone without charging. Again this is without any radios on, not connecting to anything.The stock battery cant touch these numbers. i would be lucky to get a full day out of the stock battery with no gaming and normal use.I didn't do a sticker pull to run the numbers. So I'm taking HHI's word on the 3500mAH being just that.
To conclude on this battery the $10 investment turned out to be a good choice, although it might not be a seidio or something it does more than i expected it to do. I will continue to use this battery till I get rid of the phone. The battery can be found here.
To continue on the batteries,
I also bought some of the Galilio "2000mAH" batteries, I got 3 of them with a wall charger for $13.99 on ebay, as reviewed by many others.
This is my experience with them. So they showed up in the mail and upon opening them i discovered one of the batteries look like it got dropped or skipped accross the cement, im not sure what happened, but who is gonna put a messed up battery in their phone.. So i really only got 2 batteries. I brought it up to the seller he offered me $3.00 back, it wasn't worth my time even dealing with that any further at this point. Anyways the batteries Are nice little backup batteries i take with me on trips.They make for easy backup batteries. The batteries have been suspected to be somewhere along the lines of 1000-1200mAH. I would have to agree, even with no testing with any type of tool, besides my phone. They last a most couple of hours. The wall charger that came with them actually surprised me. Everyone was reporting that it may overcharge your stock battery, which can cause some issues. This charger(as pictured below) will charge the Galilio batteries to 100% with no problems. I put my stock HTC battery into the wall charger and with repeated attempts the charger will not charge the battery past 85% even when i left it on the wall charger for 2 days. I do believe that the stock HtC charger that came with the phone gives the batteries a "better" charge, but the wall charger seems to not charge the batteries past a safe range as everyone seems to be reporting as a possible issue. My issue is it doesn't charge it well enough.
I've attached some pictures of the battery results and of the batteries.
Reserved for more... case reviews coming up next
i got the 3500 mAh from HHI. great battery, even better price.
Yea that battery is awesome!
Sent from my PG86100 using Tapatalk
Going to try this battery out. Thanks for the review.
The 85% is charge limit is what a cheap charger do,
The "charger" that come with the phone is simply a power supply, the charging circuit is actually "built in" to the phone. You can connect the OEM HTC charger/power supply into one of those cheap aftermarket dock that charge a 2nd battery and it will never charge the battery past 85% either.
To make it short and sweet
There's 2 stage of Li-ion charging
1) charge to 4.2v at constant current which is 85% when it first reach/near 4.2v
2) saturation charge, once the battery reach 4.2v, continue charging but at gradually reducing current until it reach about 3% of default charge current
Cheap charger have a simple/cheap circuit and cannot do stage 2 charging, where the charging circuit built into each phone would do stage 2 charging
http://batteryuniversity.com/learn/article/charging_lithium_ion_batteries
bitslizer said:
The 85% is charge limit is what a cheap charger do,
The "charger" that come with the phone is simply a power supply, the charging circuit is actually "built in" to the phone. You can connect the OEM HTC charger/power supply into one of those cheap aftermarket dock that charge a 2nd battery and it will never charge the battery past 85% either.
To make it short and sweet
There's 2 stage of Li-ion charging
1) charge to 4.2v at constant current which is 85% when it first reach/near 4.2v
2) saturation charge, once the battery reach 4.2v, continue charging but at gradually reducing current until it reach about 3% of default charge current
Cheap charger have a simple/cheap circuit and cannot do stage 2 charging, where the charging circuit built into each phone would do stage 2 charging
http://batteryuniversity.com/learn/article/charging_lithium_ion_batteries
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Click to collapse
im just saying its not gonna over charge your battery like everyone warns you about all over the place lol
Makis709 said:
Going to try this battery out. Thanks for the review.
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Click to collapse
Awesome!!! its well worth it!!
I need to revive a dead battery and was wondering if there was anyway I could charge a dead battery that's removed from the phone
If it is totally dead and there is no sign as to where plus and minus are then it can get weird. But batteries often hold a little bit charge and so it should be relaltively easy to just take a polymeter, find the + and the - and charge it directly with 5 volts
Personally I use a universal LiPo charger that can take most different types of LiPo cells.
Example: https://www.alibaba.com/product-det...r-industrial-battery-charger_60558441538.html
But as the battery in the xperia Z5c is an internal one, it does not have any easily accessible terminals, one have to do some macGyver trickery to connect it to a universal charger.
One can also feed the battery directly with 5 volts (overvolting it slightly), but one have to be really careful and monitor the battery temperature not to allow it to exceed 50 degree Celsius.
This method should be the absolutely last resort, as a lipo battery fire/explosion is not fun to experience. Also, one should only use this method for a very short time (around 10 to 30 seconds) at a time. Just enough to bring a battery above the discharge threshold. Then continue the charge with a normal charging cycle with a proper lipo charger. Keep in mind that a lipo cell that has been dicharged belov the safety threshold should be considered a dead battery. Even if one is able to "revive" it, the risk of swelling/fire/explosion is considerably larger.
I'd also like to add this video about charging Lipo cells that are below the "threshold": https://www.youtube.com/watch?v=A6mKd5_-abk&feature=youtu.be&t=14m54s
With that in mind, have you tried simply letting your phone sit with the charger connected? Many Android devices won't show any sign of life during the Pre-charge mode, and won't even boot up. They will appear as dead. But they are charging. It just takes time for it to pass the pre-charge mode.
In my case, when I "killed" my Xperia Z5c's battery, it took it 6 hours before showing any signs of life. But it did came back to life again without any external influence.
Well said min vän.
I would also suggest just 30-60 seconds of charging and then check the voltage, when it gets over 3 it should be OK to get charged but the phone itself