I had the old transformer with the battery drain problem. I haven't seen anything posted on the new prime. Is there a drain when plugged into the dock? Also, I have one of the defective wifi tablets... annoying as hell. Is it a hardware issue or has anyone heard of it being just a software issue?...I want to know if I need to take it back or not. because if it is a hardware problem I am returning it for sure. thanks
ASUS Transformer Prime Keyboard Battery drain
We have same issue: even when we disconnect the Keyboard from the Prime, the battery in the keyboard drops overnight from 88% to 2%
Basically renders the keyboard battery useless..
lorinthe said:
We have same issue: even when we disconnect the Keyboard from the Prime, the battery in the keyboard drops overnight from 88% to 2%
Basically renders the keyboard battery useless..
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Are you serious?
My Battery doesn't drop more or less than any other non-used Li-Po battery...
I can't see any non usual drain on my dock.
One of the real improvements with the Prime is the good battery power management. I now just leave it on the couch and I know the battery will have lots of juice the next I pick it up.
If yours is acting like the original Transformer, you have a problem.
Bye.
Sent from my Transformer Prime TF201 using xda premium
lorinthe said:
We have same issue: even when we disconnect the Keyboard from the Prime, the battery in the keyboard drops overnight from 88% to 2%
Basically renders the keyboard battery useless..
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wow. send that dock back quick! @[email protected]
I got two Primes + two Docks, neither docks lose a notable amount of power if left unplugged overnight, a couple of percent at most.
CrunchyDoodle said:
One of the real improvements with the Prime is the good battery power management. I now just leave it on the couch and I know the battery will have lots of juice the next I pick it up.
If yours is acting like the original Transformer, you have a problem.
Bye.
Sent from my Transformer Prime TF201 using xda premium
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Agreed, I also have no issues with battery drain my Prime and dock have amazing battery life. If I leave the dock all week unused, it may have dropped by 1% when I come back to it.
Sent from my Transformer Prime TF201 using xda premium
Doesn't the wake up function cause battery drain on the dock? Try disabling it in setting, worth a try.
Just to clarify the scenarios here: (idle battery drain)
Plugged into dock, power saving mode on: 3-4%/hr
Tablet NOT plugged into dock: 1%/hr (tablet) & no appreciable drain on the dock.
So, while on the dock I do have significantly increased idle battery drain. I don't really understand why this level of battery drain exists even with dock power saving mode enabled.
TF201 | XDA Premium
Imho the problem is that even when the mobile dock battery saving is enabled... it only disables responses to keyboard. The touchpad is still fully operational and wakes up a sleeping docked tablet when touched
Related
Beyond being careful cosmedically with the Transformer Prime and docking, is it OK for the batter to take it off the dock for a while, use it, put it back on, and perhaps again, before you charge it again? Looking at battery life concerns mainly.
Thanks!
Brian
Should be fine as the Prime recharges from the dock depending on its current battery level.
garak0410 said:
Beyond being careful cosmedically with the Transformer Prime and docking, is it OK for the batter to take it off the dock for a while, use it, put it back on, and perhaps again, before you charge it again? Looking at battery life concerns mainly.
Thanks!
Brian
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It's a Lithium Ion battery, so you don't need to worry about charging at various levels anyway. No battery memory on Lithium Ion batteries.
Good question, I was in fact wondering the same thing.
Edit: I've noticed while docking and undocking it tries to maintain the TFP's battery at around 100%, as a result draining the dock's battery way before the TFP's is near dead... Kinda strange if you ask me.
Sent from my Transformer Prime TF201 using xda premium
The dock works even if it is at 0% so I suppose keeping the prime as charged as possible isn't really that big of deal. Then you will at least have a charged prime if you want to recharge the dock but don't want to be tethered to the wall. I think that's better than them both running out at the same time.
You shouldn't have to worry about memory effect in these batteries at all. This has a lithium polymer battery actually.
Good point, I'd rather have a working dock with 0% battery then a dead TFP the road. I think I need to better educate myself on batteries these days. Seems not all batteries work the way I think (or was told at some point) they do. I was under the impression all batteries have a limited number of discharge/recharge cycles (I'm guessing this is the memory being referred to) . Somebody once told me, to get the most out of your battery life, it is a good idea to run it all the way down before recharging them. I do not know what kind of battery this advise applies to (I assumed all).
Sent from my Transformer Prime TF201 using xda premium
That was true of nickel cadmium rechargeable batteries. These do have a limited number of charge and discharges but if you let it discharge halfway then charge it back up and do that again you effectively used one full discharge/recharge cycle.
Theres some info on li-po batteries in my sig.
So as the title says, even after my dock exhausted its own battery recharging the ATP, it's still functioning. I'm showing 0! and it's still going strong. For me, that's really awesome that I don't have to worry about whether or not I remembered to charge the dock.
Sent from my Transformer Prime TF201 using xda premium
I noticed this as well
Sent from my Transformer Prime TF201 using xda premium
mletchworth said:
So as the title says, even after my dock exhausted its own battery recharging the ATP, it's still functioning. I'm showing 0! and it's still going strong. For me, that's really awesome that I don't have to worry about whether or not I remembered to charge the dock.
Sent from my Transformer Prime TF201 using xda premium
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Well, yeah it take power from the tablet to power it.
thats awesome! can't wait to get a dock..if i ever find one in my life time lol.
you can order the keyboard at best buy and pick it up in the store a week later
nevetsvsx said:
you can order the keyboard at best buy and pick it up in the store a week later
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only the grey one, i have the champagne prime -_-
Last night I found out that the SD card on my dock no longer worked after the dock had given all of its power over to the tablet. Does the sd card slot on anyone else's dock still work after the power in the dock has drained out? The keyboard still worked. I think that what I saw was normal but after seeing this thread I just wanted to make sure.
One thing though. Isn't it bad to deplete lithium ion batteries down to 0? Or does the keyboard dock reserve some sort of minimal charge so it doesn't ruin the Battery?
Mikroft said:
One thing though. Isn't it bad to deplete lithium ion batteries down to 0? Or does the keyboard dock reserve some sort of minimal charge so it doesn't ruin the Battery?
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i don't know about the prime yet as i don't have one yet, but with the first gen transformer, what they did was once the keyboard is drained to 3% it would stop charging the tablet and use that as reserved
usually that 3% last a couple of days even when the tablet is connected so i'm not sure if the tablet is giving power or not but the keyboard still works
Mikroft said:
One thing though. Isn't it bad to deplete lithium ion batteries down to 0? Or does the keyboard dock reserve some sort of minimal charge so it doesn't ruin the Battery?
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It's highly unlikely that 0% on the battery meter literally means a complete discharge of the LiIon cells. There is likely 15-20% charge still left in the cells, but the battery reports 0% because to go any lower would risk damaging them. Basically, the manufacturer isn't going to let you damage your device simply by using it in the intended manner.
...and for clarification, these aren't old-school LiON batteries, they're Lithium Polymer...a little different. When the machine is reporting the battery as 0%, it's not actually that low as the above poster has stated. In fact, if your tablet is running when both batteries reach 0%, it smartly uses the little bit of power it has left to shut itself down cleanly.
Li-Po batteries wont go lower than 2.7V but generally kept above that to be safe.
3.0v is the normal safe discharged voltage (per cell), so your 0% reported on the prime is really 3.0v (per cell) ... nowt to worry about its all normal.
3.0v = 0%
4.2v = Full
I'm guessing the dock has a 3cell Li-po too ?
hi guys,
so when i'm at home i found myself using the prime more and more and often with the dock for writing posts and also for using it as a stand while watching youtube or playing a game with gamepad.
Since the dock empties itself as soon as the Tablet dropped to ~75% i'm a bit concerned. I know that li-po batteries dont like to stay at low voltage/low charge for long times.
So the Tablet is at 80% and the dock is empty. 80% can mean days of medium usage, so the dock will be at 0% for a pretty long time.
Should i prevent that and always charge the dock as soon as it runs out? Would be nice to know how the dock handles voltage and charge. It could also be that it still has plenty reserve charge when it displays 0%..
any thoughts?*
Shouldn't be a problem. The dock is going to use the power of the tablet to power itself.
clouds5 said:
hi guys,
so when i'm at home i found myself using the prime more and more and often with the dock for writing posts and also for using it as a stand while watching youtube or playing a game with gamepad.
Since the dock empties itself as soon as the Tablet dropped to ~75% i'm a bit concerned. I know that li-po batteries dont like to stay at low voltage/low charge for long times.
So the Tablet is at 80% and the dock is empty. 80% can mean days of medium usage, so the dock will be at 0% for a pretty long time.
Should i prevent that and always charge the dock as soon as it runs out? Would be nice to know how the dock handles voltage and charge. It could also be that it still has plenty reserve charge when it displays 0%..
any thoughts?*
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Click to collapse
i don't think any of us have had the TF201 long enough to have a dock battery degrade, maybe TF101 owners can advise. but your concern is fundamentally sound. the dock has a lithium ion battery in it like any other. all li-on batteries are prone to having their cells dry out if they spend a lot of time fully discharged. the net effect is that the battery will diminish it's capacity over time.
asus made a good design decision with the TF201 by not having the dock charge the tablet until the tablet depletes to 70% capacity, because li-on batteries also degrade when constantly being held at 100% charge. but imo they should have put in another threshold for the dock battery, say at 25%, where the dock stops charging the tablet until the tablet gets dangerously low. in lieu of this, my personal opinion is that it is wise to give the dock a charge (or disconnect it from the tablet) once it dips below 20%.
Hey guys,
My dock has been acting kind of weird lately (see my thread in the Q/A section if you're curious - dock battery showed as 0% even when charging). What I'm wondering now is how others are doing with battery life in terms of the dock recharging the prime.
When I first got the tablet + dock, I used to be able to recharge the prime 2-3 times when the tab dropped to 70%. That would usually drain my dock battery all the way.
Fast forward to today and the past two weeks...My prime just finished recharging my tab up to about 90%, while it was being used to annotate lecture notes with some mild browsing and emailing in the background, the dock dropped to about 60%. This is what's concerning to me...It seems to be taking double the battery from the dock to recharge it to about the same, or less than, what it did before on the dock.
My use today has been pretty constant. I recharged both to 100% last night, and when I opened it up today at 12:30 pm, the tab was at 96% and the dock at 98%. Since then, my dock dropped to 88% while the tab drained in the same time to about 70%. It then started to charge my tablet to about 90% but the dock dropped to 34% where it is now. I have been using this constantly for the past 3.5 hours.
Here are my concerns, which I hope you guys can help me address:
Is this normal battery drain for 3.5 hours of moderate-heavy use?
Is this drain software related? It seems to have been fine way back on .11 (I'm on .15 now)
Is my dock battery shot? (ie should I RMA it)
Does the dock battery drain EVEN MORE if it's recharging the tablet while you're typing notes, etc on it?
Does a USB peripheral (ie wireless mouse) increase battery drain SIGNIFICANTLY?
I would attach a battery screenshot, but my settings battery menu doesn't have it tracked since it's docked.
I'm hoping this is a meaningful and useful thread so please try to avoid stating something obvious lol
Thanks guys
Sent from my Transformer Prime TF201 using XDA Premium HD app
What performance modes, brightnesses are you using? Can you give us more info about what would be draining the battery?
It's quite possible your prime could be using a percent of the dock for every percent it receives, making it seem like your dock isn't working well, when in actuality it could be your tablet.
.15 was a battery killer for me, since I put virtuous on my prime and underclocked the cpu as the battery gets lower, it's fixed my battery life.
ickkii said:
What performance modes, brightnesses are you using? Can you give us more info about what would be draining the battery?
It's quite possible your prime could be using a percent of the dock for every percent it receives, making it seem like your dock isn't working well, when in actuality it could be your tablet.
.15 was a battery killer for me, since I put virtuous on my prime and underclocked the cpu as the battery gets lower, it's fixed my battery life.
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Sorry - forgot to include that. I'm on the normal regular mode with auto brightness. With SetCPU, I had it on On Demand up until this afternoon around when I wrote this post. Then I switched it to interactive.
And as for your second point, I agree that it's possible that's what's happening, but because I'm using it for hours on end, I'm not quite sure if that's what's happening, part of why I started this thread.
Have other people seen improvements from .15 to Virtuous?
Sent from my Transformer Prime TF201 using XDA Premium HD app
Another question, along the same line.....If the tablet's battery is low, the dock is fully charged, and unplugged, will the juice in the battery partially charge the tablet, so that I can remove it from the dock and use it separately until I get to a charging station? Or will the tablet ONLY run off of the dock's battery?
Thanks,
Bob......impatiently waiting for my champagne dock to come
robertg9 said:
Another question, along the same line.....If the tablet's battery is low, the dock is fully charged, and unplugged, will the juice in the battery partially charge the tablet, so that I can remove it from the dock and use it separately until I get to a charging station? Or will the tablet ONLY run off of the dock's battery?
Thanks,
Bob......impatiently waiting for my champagne dock to come
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Click to collapse
Yep, the dock charges the dock when it's plugged into the tablet.
From what I remembered, if you dock the TP into the keyboard dock, the dock will start to charge the TP tablet? What I notice is, if the TP is at say 85% and I dock it, it will not charge the TP. If I turn off the TP and turn back on it will start to charge the TP.
Also noticed last night that once the TP battery went down to 70% it started charging, but this not good as I would be better to always have the TP fully charge.
For those that have the keyboard dock, does your start to charge the TP as soon as you dock it? If so, I will exchange the dock, have 1 week left.
Sent from my Transformer Prime TF201 using xda premium
Charge starts at 70% then it loads the tablet to 100% and then starts charging again when its down to 70%.
Thats actually good like this and more healthy for the battery instead of being at 100% all the time.
Imho they should even have implemented something like this on the low end, like the dock would stop loading the tablet at 15% and only give the rest of the charge to the Tablet if the tablet drops under 15%.
clouds5 said:
Charge starts at 70% then it loads the tablet to 100% and then starts charging again when its down to 70%.
Thats actually good like this and more healthy for the battery instead of being at 100% all the time.
Imho they should even have implemented something like this on the low end, like the dock would stop loading the tablet at 15% and only give the rest of the charge to the Tablet if the tablet drops under 15%.
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Click to collapse
Thanks Clouds5, now I know I don't have a defective dock. I think I would prefer it would start to charge a 80%, but that's just me. Thanks again for the info.
Sent from my Transformer Prime TF201 using xda premium
Can the dock be charged by itself,by hooking charger cable up to it? or does the prime have to be attached in order to charge keyboard?
I should have me a dock on the way. Very excited to see & experience all these great things I've been hearing about the dock. I know the extra battery life added will be great along with USB host capabilities. plus full size SD card slot.
demandarin said:
Can the dock be charged by itself,by hooking charger cable up to it? or does the prime have to be attached in order to charge keyboard?
I should have me a dock on the way. Very excited to see & experience all these great things I've been hearing about the dock. I know the extra battery life added will be great along with USB host capabilities. plus full size SD card slot.
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Dock can be charged without TP on it. The dock has a connection just like the TP on the side to charge it.
I still don't see why, when I shut down TP with 85% battery and I turn it on, it will charge the TP.
Sent from my SAMSUNG-SGH-I717 using xda premium
ElCamino said:
I still don't see why, when I shut down TP with 85% battery and I turn it on, it will charge the TP.
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I'd say its probably a bug , maybe a file gets reseted that sends info to the dock or something.
jep the dock is great indeed Gives you a whole new experience.
ElCamino said:
Dock can be charged without TP on it. The dock has a connection just like the TP on the side to charge it.
I still don't see why, when I shut down TP with 85% battery and I turn it on, it will charge the TP.
Sent from my SAMSUNG-SGH-I717 using xda premium
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is there a little LED to let you know its charging and when it's full? like on prime power button
demandarin said:
is there a little LED to let you know its charging and when it's full? like on prime power button
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Yes I believe there is on the side of the dock.
demandarin said:
is there a little LED to let you know its charging and when it's full? like on prime power button
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Click to collapse
Yep
JoeyLe said:
Yes I believe there is on the side of the dock.
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pbelcomp said:
Yep
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thanks!
not to mention if they are attached, when you charge both the tfp and dock led light up as charging/charged
Does everyone's dock charge the TP only to 90%? My keyboard dock stops charging my TP at 90%.
Sent from my Transformer Prime TF201 using xda premium
Yeah, it should only charge between 70-90%.
sorry for digging out this one, but I thought i'd better add my question to this thread because the topic is mentioned before.
Is there any possibility to change the behavior of the dock charging the prime?
I mean like the dock starts charging at 50% and charges till 70% but stops when it reaches a certain percentage.
I thought I read about it before but I couldn't find it yet.
Let me know if you can help me, and if it's possible to do with my locked but rooted Prime.
Thanks in advance.