I know better, but I was an excited fool and started using the G Tablet out of the box after initially charging the battery to 50% or so.
These cells need a good strong charge on first use.
I'm noticing the battery is only lasting for about 4-5 hours on a full charge.
I'm planning on keeping this device for a while and the cells eventually go bad anyway. I'm thinking of replacing the battery..
So I was wondering if anybody has opened the device and seen how the battery is connected (I really hope it's not soldered) and the make/model of the cell itself.
- it would be beneficial to all to know what to replace the battery with later on down the road when it reaches the end of life.
fungus_666 said:
So I was wondering if anybody has opened the device and seen how the battery is connected (I really hope it's not soldered) and the make/model of the cell itself.
- it would be beneficial to all to know what to replace the battery with later on down the road when it reaches the end of life.
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http://forum.xda-developers.com/showthread.php?t=842354
I'm asking for the make/model or any identifying marks.
I can't make any of that out in any of the images in that thread.
Hi all,
I was wondering if anyone had any experience and suggestions for long term backup battery storage.
I need to order a new battery for my tab and I have someone behind the scenes who can get me a few batteries with his discount. I want to get one regular use battery to replace the one in my tab and store the others for future use. I'm looking at storing these batteries for at least 2 years. I use my tablet every day for a good 9-10 hours each day, so there is not doubt that I will burn through another batteries charge life cycle within a year or so.
I started to use it sans battery and just kept it plugged in when I was at home to preserve the battery for work, but keeping it plugged in is starting to become a pain.
So, to recap simply: I need to store a tablet battery unused for at least a year and need some advice.
Store a Li Ion battery at about 50% charge. You shouldn't be keeping them stored and unused for more than a year. Rotate them in and out of use. Keep one of them charging while you use the other. Once you drain one, swap it with the charged one. I do this with my HD2 and the three batteries I have for it. I always have a spare, and always have one charged and ready to swap out.
Yeah, that's what I was hoping I wouldn't hear. This is what I do with the travel battery for my phone, but this is a tablet that is a beast to change the battery. After taking the back off a few times it becomes way to loose and I have to replace the back.
Any other suggestions - possibly a 40-60% charge and a nice cold chill in the fridge? I don't know the validity of the refrigerated battery but my grandparents swear by it and have always had ready to use batteries (a little different than my application, I know, but still...)
Yeah, that's what I was hoping I wouldn't hear. This is what I do with the travel battery for my phone, but this is a tablet that is a beast to change the battery. After taking the back off a few times it becomes way to loose and I have to replace the back.
Any other suggestions - possibly a 40-60% charge and a nice cold chill in the fridge? I don't know the validity of the refrigerated battery but my grandparents swear by it and have always had ready to use batteries (a little different than my application, I know, but still...)
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That's actually sound advise. Chilling the battery slows the decay. Do not put them in the freezer. I would think they'd be ok in the fridge, but I've never stored a battery for more than a couple days in there. I'm not sure how it would react to years in there. Your best bet is to buy the batteries closer to the time you need them. For what you are asking, you're going to be wasting your money anyway. You may as well get your money's worth later on.
-- Sent from my TouchPad using Communities
I heavily use my infinity with dock. I know that Li-Ion Batteries have degraded battery life every time you let them dissipate to 0%. Unfortunately that almost always happens when I use the dock (Tf201). Is there any way to stop the tablet from charging from the dock around like 5%? I want to keep my dock connected because I want to keep using the keyboard but I don' want to shorten the dock's battery life unnecessarily when my tablet is at 90%.
Is there an app or rom solution to this?
Sent from my ASUS Transformer Pad TF700T using xda app-developers app
same problem here. my dock drains fast too i feel like its giving it too much power !
Same. Mine charges the tablet super fast, but the dock still works at 0%. I've only gotten it there one though.
Same here, I feel the dock is charging the tablet just a tad too much. When the dock's warning me about 0% battery left, the tablet itself is still at 80-90%. That can be useful if I wanted the dock to ONLY charge the tablet, but when I want to use the dock as well, it's far from ideal.
I'd like it if we had a setting for this, like one for pretty much just using the dock as a spare battery/charger, and one for maximum tablet AND dock battery life. I get that the dock's not much use without the tablet, but it feels unbalanced as it is now.
Sent from my ASUS Transformer Pad TF700T using Tapatalk 2
Einride said:
Same here
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Same here. I work and every time the dock is 0%. Im at college. Sorry for worse english.
Okay I must be missing something here.. but the dock still works just fine at 0%, why should it keep any power to itself?
Druidika said:
Okay I must be missing something here.. but the dock still works just fine at 0%, why should it keep any power to itself?
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Because for Lithium-ion battery it is not good to have it discharged to 0%, this can reduce the battery life span.
Also another problem can be is when battery is a discharged state, its voltage will gradually decrease then the keyboard dock will no longer be charged any further because the protection circuit disables it (Although this usually applies when you are storing the battery at discharged state but its a good idea to keep this in mind).
Cheers
Actually, the dock battery is not fully depleted when it reaches the nominal zero % charge -- the internal electronics of modern batteries prevent them from depleting to harmful levels. (This has been referenced in the TF700 forums elsewhere, by the way, which a search probably would've shown.)
I think that the charge provided to the main tablet is coming from both the dock battery and the main tablet's battery at the same time; however, since the dock battery has a significantly lower capacity, it should not come as a surprise that it gets 'depleted' sooner.
From a usability or design point of view, I fully agree with you that it would have been nicer to see the dock deplete to about 40% 'resting charge' (which is reputed to be the optimal moment to connect the charger again ) an have the tablet's main kick in. The dock battery could then take over when the main battery reaches 40% charge left. That way we'd have best of both worlds: battery capacity is used optimally, and battery life would be optimal as well.
Alas, this is the real world. From a practical point of view: do not worry you are screwing up your battery, as you're not. Well, of course you are, but all batteries degrade when in use; that's a given -- but when our batteries finally die on us permanently and irreversibly, we'll have at least one other great 64-core 256 GB superduperHD 30" hypertablet available that makes you fresh coffee in the morning, irons your clothes and tells off door salesmen on its own. It will be so heavy it will need legs of its own, but then it also runs all Olympic sprinting distances at least an unbelievable 2.4 seconds faster than the then-current world records.
---------- Post added at 10:35 PM ---------- Previous post was at 10:24 PM ----------
Malkaridae said:
Because for Lithium-ion battery it is not good to have it discharged to 0%, this can reduce the battery life span.
Also another problem can be is when battery is a discharged state, its voltage will gradually decrease then the keyboard dock will no longer be charged any further because the protection circuit disables it (Although this usually applies when you are storing the battery at discharged state but its a good idea to keep this in mind).
Cheers
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Click to collapse
This ^^ is right, though -- if you wait long enough, even the protection circuitry will fail, and the natural voltage fall-off will kill your battery. If you put away a healthy Li-Ion battery in a fully charged state, this should take about four months at the least, but probably closer to eight months to a year.
I hope someone reads this and decides to create an app that exactly handles this problem. I feel bad when I always discharge to 0%. If this is not so harmful as I feel, I still I dont like it.
I think this is a mental thing for you all. No need for dock to keep a charge. Its designed to push the tablets life longer so you can detach it and keep going if you'd like and not leave any juice behind.
Sent from my Galaxy Nexus using xda app-developers app
It's not quite as simple as that is it? If it was just an extended battery pack why have a keyboard, USB port and SD card reader included?
Okay, you only see it as an extended battery, not all of us does. Part of the reason why I chose the TF700 is because of the dock. Any portable device can get a portable battery pack to extend battery runtime, this one is a keyboard and port extender as well.
I don't see why we shouldn't be able to further control how the dock depletes its battery, it'd make it a lot more useful overall.
Einride said:
It's not quite as simple as that is it? If it was just an extended battery pack why have a keyboard, USB port and SD card reader included?
Okay, you only see it as an extended battery, not all of us does. Part of the reason why I chose the TF700 is because of the dock. Any portable device can get a portable battery pack to extend battery runtime, this one is a keyboard and port extender as well.
I don't see why we shouldn't be able to further control how the dock depletes its battery, it'd make it a lot more useful overall.
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Because you can use all of those when the dock is at 0%. So why do you need to save the docks battery?
Sent from my Galaxy Nexus using xda app-developers app
NickS VR4 said:
I think this is a mental thing for you all. No need for dock to keep a charge. Its designed to push the tablets life longer so you can detach it and keep going if you'd like and not leave any juice behind.
Sent from my Galaxy Nexus using xda app-developers app
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I cant detach in college because I like to work with the dock. That is the reason I bought it.
usern ameisval idandnot said:
I cant detach in college because I like to work with the dock. That is the reason I bought it.
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Then leave it attached, makes no difference. Add the numbers up to 200%.
If you have 80% battery, what difference does it make if its 0% and 80% or 40% and 40%? (I know battery sizes are different and percentages would be different).
Now overall battery is down to 80%, if you detach tablet with scenario 1, you have max battery left (80%) vs 1/2 of that (40%) if the dock had a charge remaining.
Why should the dock keep any charge? It still works with 0%.
Sent from my Galaxy Nexus using xda app-developers app
because some of us do not want to let it waste charge when the tablet is already near full. (save some charge for later). we dont want to recharge it just because it gave too much power to the tablet at an uncessary time. i bet alot of people dont want it to charge the tablet to 100% from 99 everytime u turn the screen on lol , it would just make life better with the tablet + dock if we could control when it does charge during sleep ,ect
I'm trying to understand what the problem is here... What good does it do for the dock to keep a charge? You can't use the dock without the tablet and as long as the tablet is connected, the dock will work, even if it reports a 0% charge. So what good would it do to keep, let's say, the dock at a minimum of 10%? That 10% would be completely "wasted", right?
Or am I misunderstanding the issue?
Sent from my ASUS Transformer Pad TF700T using Tapatalk 2
jtrosky said:
I'm trying to understand what the problem is here... What good does it do for the dock to keep a charge? You can't use the dock without the tablet and as long as the tablet is connected, the dock will work, even if it reports a 0% charge. So what good would it do to keep, let's say, the dock at a minimum of 10%? That 10% would be completely "wasted", right?
Or am I misunderstanding the issue?
Sent from my ASUS Transformer Pad TF700T using Tapatalk 2
Click to expand...
Click to collapse
I do not get the issue either. On I go to a relevant thread.
jtrosky said:
I'm trying to understand what the problem is here... What good does it do for the dock to keep a charge? You can't use the dock without the tablet and as long as the tablet is connected, the dock will work, even if it reports a 0% charge. So what good would it do to keep, let's say, the dock at a minimum of 10%? That 10% would be completely "wasted", right?
Or am I misunderstanding the issue?
Sent from my ASUS Transformer Pad TF700T using Tapatalk 2
Click to expand...
Click to collapse
I was under the impression that the dock will eventually "power off" and you won't be able to make use of the keyboard, USB port and SD card reader once its battery is depleted. However, if they're still fully functional as long as the tablet is connected, I don't really mind the current way it's done.
Surely the dock requires some power to operate though, and unless it gets that power from its own battery, the tablet will have to power it. It's this "obfuscation" of actual battery capacity and use I find slightly annoying.
After reading this thread and after some thinking i can dig both camps :laugh:
On one hand, we are concerned about a battery lifespan, and as it is well known that batteries should not deplete to 0%, i can dig those who want to control that. But, there is also a mention that the battery doesn't really go down to 0% and it somehow controls that automatically.
So, no worries on this side.
The other "problem" - which i think is more important, at least to me - is that some of us feel that it is completely unnecessary for the dock to charge the tablet if the later has 99% of battery. I would also like to have some kind of control over this.
Both 100% - i want to use only tablet battery. And i will use it until it drops to about 30-40%. Than i would like the dock to kick in and refill my tablet. Probably right in the middle of my other work when i actually don't use a tablet (faster refill as i am not using it). Well, after it reaches 90%+, please docky dock, get out of the way and wait for your next turn. Maybe i'll refill you, too
So yeah, there is actually NO problem at all, only different use cases. I bet every single one of use has a little bit different usage pattern and with an app to customize these things, we could and should all be happy.
Anyone, anyone? I would like to beta test it
jtrosky said:
I'm trying to understand what the problem is here... What good does it do for the dock to keep a charge? You can't use the dock without the tablet and as long as the tablet is connected, the dock will work, even if it reports a 0% charge. So what good would it do to keep, let's say, the dock at a minimum of 10%? That 10% would be completely "wasted", right?
Or am I misunderstanding the issue?
Sent from my ASUS Transformer Pad TF700T using Tapatalk 2
Click to expand...
Click to collapse
The issue is that Li-ion batteries lose max harge every time they are depleted. You do not want to constantly cycle your battery because of this. The dirty solution is to stop using your dock before this happens but i use my infinity for work and this is not an option.
Sadly after only about a month of use my dock maxes out at only 98% now after being forced to completely dicharge it while working. At this rate, I will lose almost a quarter of the dock's charge in a year. Thats completely unacceptable. For such an expensive device.
Sent from my ASUS Transformer Pad TF700T using xda app-developers app
hello,
I have a problem with my asus transform TF101G, the dock is quickly discharged, is this normal ?
If the battery has come to the end of it's life, yes that's normal
*Detection* said:
If the battery has come to the end of it's life, yes that's normal
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thanks for your help, appreciate
Is there an application to know the life of the battery? because it is new, it has 2.5 years but almost never used
Don't know if apps are going to be very accurate, but there are tests like this one
https://play.google.com/store/apps/details?id=com.antutu.tester&hl=en_GB
and
https://play.google.com/store/apps/details?id=kr.hwangti.batterylog&hl=en
It seem like there is no way to buy a replacement battery for nexus 9 or the back cover. Is there any source for the purchasing？
http://bfy.tw/3RGR
http://www.etradesupply.com/htc/tablet/htc-google-nexus-9.html
https://www.ifixit.com/Store/Parts/HTC-Nexus-9
At both sites the replacement battery is out of stock. My battery has started acting very strange (tablet totally turns off around 20%, then when i plug it in battery is 100% dead, needs 15 minutes charging just to start up again).
I did quite a bit of googling but didn't find anything.
kingweee said:
At both sites the replacement battery is out of stock. My battery has started acting very strange (tablet totally turns off around 20%, then when i plug it in battery is 100% dead, needs 15 minutes charging just to start up again).
I did quite a bit of googling but didn't find anything.
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Have you tried another charger? My charger acts weird.
whowatchlist said:
Have you tried another charger? My charger acts weird.
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Click to collapse
I have, it's not the charger. I'd simply like to buy a replacement battery but can't seem to find it for sale anywhere. Does anyone have any idea about where to buy one?
Bumping this thread. My aging Nexus 9 is in need of a new battery, but all the sites posted above show them as out of stock. Has anyone been able to purchase a replacement battery recently?
tibere86 said:
Bumping this thread. My aging Nexus 9 is in need of a new battery, but all the sites posted above show them as out of stock. Has anyone been able to purchase a replacement battery recently?
Click to expand...
Click to collapse
If anybody is still searching (or has given up already): I just got a new battery from here: http://bigupgadgets.com/battery-35h00218-00m-b0p82100-for-htc-flounder.html. You may find it from other vendors if you search for "35H00218-00M".
The printing on the back looks different from my old battery - looks like this is indeed a new part, rather than a refurbished/replacement HTC battery. It fit perfectly, and charged fine. I just installed it yesterday, so I can't yet say how well it performs long term.
christian_l said:
If anybody is still searching (or has given up already): I just got a new battery from here: http://bigupgadgets.com/battery-35h00218-00m-b0p82100-for-htc-flounder.html. You may find it from other vendors if you search for "35H00218-00M".
The printing on the back looks different from my old battery - looks like this is indeed a new part, rather than a refurbished/replacement HTC battery. It fit perfectly, and charged fine. I just installed it yesterday, so I can't yet say how well it performs long term.
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Many thanks! I was able to order a replacement battery and replace mine. After about a week of use, I have not seen any issues. :good: Only complaint I would have is the slow shipping.
tibere86 said:
Many thanks! I was able to order a replacement battery and replace mine. After about a week of use, I have not seen any issues. :good: Only complaint I would have is the slow shipping.
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You're welcome! Yeah, I'm also quite happy with mine so far - it keeps the charge pretty well.
christian_l said:
If anybody is still searching (or has given up already): I just got a new battery from here: http://bigupgadgets.com/battery-35h00218-00m-b0p82100-for-htc-flounder.html. You may find it from other vendors if you search for "35H00218-00M".
The printing on the back looks different from my old battery - looks like this is indeed a new part, rather than a refurbished/replacement HTC battery. It fit perfectly, and charged fine. I just installed it yesterday, so I can't yet say how well it performs long term.
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So how did it turn out? My Nexus 9 is going to become sort of a lab rat for full-scale linux development on the device so I'm considering replacing the dying battery as well. I could get the aforementioned battery for around 30€. If the battery works without blowing up and is the advertised capacity, that is.
Alexandroid99 said:
So how did it turn out? My Nexus 9 is going to become sort of a lab rat for full-scale linux development on the device so I'm considering replacing the dying battery as well. I could get the aforementioned battery for around 30€. If the battery works without blowing up and is the advertised capacity, that is.
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It worked well, fewer slowdowns and crashes. That may be in part also because I fixed the location of the copper plate/heat sink that had been placed under the original battery (leading the heat into the device) to where it was supposed to be. Some problems that may be more related to the chip/RAM/64bit choice persisted (browser is still super slow with just a few tabs open). Not using it much these days except for ebooks, Hoopla, etc. When I don't use it for a while, I turn of the Wifi and the charge holds for many days. Good luck with your Linux endeavors.
christian_l said:
It worked well, fewer slowdowns and crashes. That may be in part also because I fixed the location of the copper plate/heat sink that had been placed under the original battery (leading the heat into the device) to where it was supposed to be. Some problems that may be more related to the chip/RAM/64bit choice persisted (browser is still super slow with just a few tabs open). Not using it much these days except for ebooks, Hoopla, etc. When I don't use it for a while, I turn of the Wifi and the charge holds for many days. Good luck with your Linux endeavors.
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Well all the other malfunctions are definitely NOT related to the battery, except if the old one maybe started to lack in persistent current delivery (which would cause the sudden shutoff - my Nextbit Robin had it as well and it would behave as if the battery wasn't designed to power the chipset, crashing at 70% charge). If something in the power delivery goes wonky then maybe that also messed up some memory addresses and CPU calculations.
But enough being a smartass - if the battery does hold up without life-threatening malfunctions then it might be a good option?
Well all the other malfunctions are definitely NOT related to the battery, except if the old one maybe started to lack in persistent current delivery (which would cause the sudden shutoff - my Nextbit Robin had it as well and it would behave as if the battery wasn't designed to power the chipset, crashing at 70% charge). If something in the power delivery goes wonky then maybe that also messed up some memory addresses and CPU calculations.
But enough being a smartass - if the battery does hold up without life-threatening malfunctions then it might be a good option?
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What I was trying to share is that the new battery (and its proper placement) fixed a couple of things for me that I hadn't expected to be related to the battery. So I got actually way more than just increased battery life. With some non-original batteries (e.g. for cameras) you see that the copies are definitely inferior to the original. This one was as good or better.
Of course that was two years ago - production standards may have changed, or you may get a battery that's been sitting around for the last two years (what would that do to a battery? - I have no idea). Mine's still working well after this time. I would definitely go for it, but I'd try to find a vendor where I can send it back if for some reason it's not working as advertised. I haven't heard of any of these batteries exploding, and really would not worry about it. Hope that helps.