Hi XDA,
I've got hold of an old TF101 tablet - it hasn't been switched on in at least 7 months due to the charger going missing.
I bought a new USB cable and have managed to get the device booting. It took several hours to get a single bit of charge in it, but I found a thread regarding the batter charging times, depending on the type of charger being used.
The official ASUS charger outputs 15 VDC which will charge the tab at 35% per hour, with the screen on, and will give a visible charging icon.
All other charger plugs will NOT charge the device with the screen on, and will NOT show a charging icon. However, I've found that the iPad charger outputs the most VDc and will charge the tab whilst it's off at 10% an hour.
For two nights in a row now i;ve left it on charge and have come down to it only sitting at 37%.
Does anyone have any suggestions on a fix? I have tried hard resetting etc. I guess I should buy a whole new charging unit and see if that works?
Cheers!
Related
(Be nice!)
My Streak is only 3 days old and I am thrilled with it but .....
Last night I shut it off and put it on the wall charger as usual at bedtime. It had about 80% charge left and had been working fine all day.
When I got up this morning and tried to turn the phone on, it said "0% Charge" and shut itself off. I had it on my cigarette lighter/usb charger in the car on the way to work (1 hour) and it still said 0% charge. I have had it on charge from the usb on my desktop computer in the office for 1-1/2 hours now and it says 20% charge.
When the phone is shut off, what the heck could discharge the battery completely in 6 hours????? Could the charger be bad and drawing current from the battery? (Shouldn't happen - poor design if it did!)
If it is REALLY sensitive to input voltage, maybe the USB charger in my car isn't high enough to charge the Dell? (I have seen some usb devices that actually want 5.1 to 5.2 volts to charge.)
Anyway, it is slowly coming up but I need to figure out what killed it over night. Has anybody else had this happen????
Dianne
(40 years an electronic tech and just joined The Cell Phone Age LOL!)
Did you fully shut-down your streak, or just turn-off the screen? There is circuitry that stops the battery from charging once a full charge is reached, as over charging will ruin the battery. So the phone should be on while charging. Another thought... Will it even charge if it's not on?
P.S. the thread title does leave some room for jokes
Yes, the phone will charge while it is powered off.
Your car charger may not have the power needed. I have seen a few posts about the car chargers.
Something does not seem right. While on the wall charger it should have been at 100 percent.
Also, my phone will charge fully in 2 hours on the wall charger, not sure of the time on USB.
Sent from my Dell Streak using XDA App
[email protected] dc can charge a hungry streak to full power in 2 hour.
It'll take about 3 H if you are using [email protected]
Sent from my Dell Streak using XDA App
Getting stranger!
After two incidents where the phone SHOULD have charged over night but was dead or nearly dead in the morning, I plan to switch to a USB charger that I KNOW is good but .....
When I tried to power up the Streak this morning (after being shut off last night and left on the charger over night) it was TOTALLY dead - didn't even light up again when I plugged it back into the charger! - so I stuffed it in my pocket until I got to work.
I popped the battery out and measured it - no-load voltage showed 4.0 Volts. When I put the battery back in, the Streak booted fine and showed 100% charge! (It was not battery contacts - I cleaned them a few days ago after the no-charge incident).
It appears that there may be something in battery-backed memory that got out of whack and removing/replacing the battery cleared the error state allowing the Streak to boot. This could tie in with the apparent charging problem?
Any ideas?
Hi, is it possible to make the phone charge whilst the screen is on?
plugged in charger at 37% battery and drove with navigation for 6 hours and when i arrived it was still 37%, would of been nice to charge it at the same time.
On return journey i kept screen off for the last hour so it would charge.
Thank you
It does charge even when the screen is on. I charge it while web browsing and it goes upto 100. You're using a navigation app which is processor extensive(as well as data) so that's why you battery neither dropped nor increased.
Sent from my GT-I9300 using XDA
if it wasn't charging your phone would have been flat after an hour, instead you got six hours of satnav and some more for later.
You might find that you can get a bit more if you use a different car charger with a higher ampage, but breaking even is to be expected with SatNav.
Thanks, thats a shame as my SIi charged with navigation on.
I understand its powering the phone but not charging the battery, i use a 2amp charger same as i used for the SIi
USB car chargers are never as good as the wall chargers for charging your phone when the screen is on. I have tried 1 amp and 2 amp car chargers of different brands and like you, if my percentage is say 38% or whatever with screen on, then it will take close to an hour just to put 1% charge. Plug it into wall charger with screen on and it charges much quicker.
I have had my g3 for about 2 months now and the last 2 days i realise that it barely charges. I usually leave my phone overnight and its always at 100% in the morning but 2 days ago i plugged it in at about 15% at 12am and by 9am it was only at 54%. I thought it was really strange but didnt think much of it i took out the battery put it back in and put it to charge again. In 3 hours it was only at 70%. I realised there was something wrong but i couldnt figure out what was causing the problem so i let the battery emptey and tried charging again. Again the charging was extremley slow. So i took my friends charger and it was full in an hour or so. This was a relif knowing it wasent my phone that was the problem. So i decided to see what the problem was i took his usb cable (which was also original) and plugged it into my charger and it charged quickly but when i plug in my cable its slow w even on his charger. Does anyone know whats going on?
I've never had good charging in this phone. Sometimes its super fast other times it barely charges if the screen is on. I have the damn thing plugged in and just saw it drop a percent. Charging port is to blame IMO. Its a piece of ****.
Had the same issue with my 4 months old LG G3. Different cables didn't make a change, original LG Charger was the problem - when charging on external battery it was always fast, when charging on my genuine Nvidia Shield charger it was always fast. So i decided to buy a different charger (i-tec USB Power Charger 2 Port) and also new cable (Wsken X-Cable) and no longer any problems...
Hey Forum,
So today I noticed, that my battery in the mentioned tablet wasn't charging so fast. I tried to charge with the Sony 2 pin charging connector, but it wasn't faster. I tried a wall charger and a usb charger too, same result. It has been charging for 4 hours now and it only charged 30%. What can I do? Also I'm new to this forum, so I'm sorry if this is not the right place for my problem.
(P.S.: The tablet is turned off, so it's not an app what causing this problem. Also it decharges faster than it charges when it's turned on.)
(P.S. 2: Now I turned on the tablet, and the battery app is showing some graphs. That is clearly visible when the battery started to decharge really fast the temperature was increased to 30 C. That is approx. 7 C above the average, but it think it an be explined by basic electronics. I really dont know :/)
Update: I restarted the tablet in safe mode, but it was not the solution. And the battery app says -21 mins until full charge when it's plugged in, but this nuber haven't canged (I used the tablet since the problem occurred, so I expected the number to change).
Depends on the charger. I use my Samsung Galaxy S7 Edge's charger and my tablet tells me it's Rapidly Charging. I recalled using Sony's one before and it doesn't tell me it's doing the QuickCharging function.
a friend has asked me to take a look at his TF201 which he had in storage for 2+ years and wants it usable again, I started charging it with the supplied cable using my Anker 40W 5-port charger (he doesn't have the wall plug for it). I did a bit of reading around and an orange light is supposed to come on at the power button but nothing shows, not even a blinking light. I'm charging directly to the tablet, not the dock.
After an hour of charging, pressing the power button vibrates the tablet with a red battery gauge on the display and then switches off. After another hour of charging the tablet boots, with 2% battery remaining in a "not charging" state. So, I leave it charging overnight and it's now at 90%, still stating it's "not charging" in Settings > Battery.
What does the problem point to it being?
Salty Wagyu said:
a friend has asked me to take a look at his TF201 which he had in storage for 2+ years and wants it usable again, I started charging it with the supplied cable using my Anker 40W 5-port charger (he doesn't have the wall plug for it). I did a bit of reading around and an orange light is supposed to come on at the power button but nothing shows, not even a blinking light. I'm charging directly to the tablet, not the dock.
After an hour of charging, pressing the power button vibrates the tablet with a red battery gauge on the display and then switches off. After another hour of charging the tablet boots, with 2% battery remaining in a "not charging" state. So, I leave it charging overnight and it's now at 90%, still stating it's "not charging" in Settings > Battery.
What does the problem point to it being?
Click to expand...
Click to collapse
I would try to find an original Asus charging block on eBay or Amazon, I just picked up on eBay with a cable for $10 so don't overpay.
NP
Ok thanks will try that.
I've also found the dock doesn't take a charge at all (it blinks orange for a few secs then stops), probably needs a new battery. Is it worth buying a new cable and battery at this time, as dock batteries seem quite rare/overpriced compared to a used TF201 tablet from ebay.
Yeah some people are asking crazy prices for the doc +$300 US. You don't really need the dock, I bought one new with the TF201, I'm now using it with my TF700. With that being said, if you can get one cheap, that holds the charge get it, the USB port is great for flash drives or a USB mouse and the SD slot on the front is a nice addition. Remember you can also search for AD01 as that is the Asus model number for the dock.
NP
Salty Wagyu said:
a friend has asked me to take a look at his TF201 which he had in storage for 2+ years and wants it usable again, I started charging it with the supplied cable using my Anker 40W 5-port charger (he doesn't have the wall plug for it). I did a bit of reading around and an orange light is supposed to come on at the power button but nothing shows, not even a blinking light. I'm charging directly to the tablet, not the dock.
After an hour of charging, pressing the power button vibrates the tablet with a red battery gauge on the display and then switches off. After another hour of charging the tablet boots, with 2% battery remaining in a "not charging" state. So, I leave it charging overnight and it's now at 90%, still stating it's "not charging" in Settings > Battery.
What does the problem point to it being?
Click to expand...
Click to collapse
I have to laugh, I thought the TF201 that I picked up yesterday wasn't charging as it says "not charging" under the battery section in settings.
But I was on 49% charge an hour ago and it's now on 67% charged battery....:silly:
The dock appears to be well and truly dead but will interact with the tablet if plugged in. Seems that you can get replacement batteries, on Aliexpress, for around £17/18 shipped to the UK.
There's a Youtube video that suggests that you need to disconnect the battery if the table won't charge up at all. I had that problem with a Lenovo Tablet that was completely dead. Removed the back and disconnected the battery for 30 seconds or so, then plugged in the charger and it was charging normally once more.
From further reading there's an awful lot of problems with the Transformer series, so I guess I just have to consider myself lucky that it's even charging in the first place???