yashsingh1/xdaforums huggingface dataset:
[Nexus One Accessories] d0ugie:
I meant that a milliamp burnt at 85% takes a lighter toll on its long term longevity, based on what I've read about this kind of battery (haven't managed to test something subtle like this over a long period of time), takes a lighter toll on your battery than a milliamp burnt at 8%. But it's probably mostly nominal if not completely theoretical and I wouldn't advise forming a neurosis of feeling afraid of letting your phone run below a 70% charge.

As for the other thing you thought I might have meant, if I'm understanding it right, based on what I've seen with tests of the batteries with the hardware and with programs on the phone, it appears that the battery meter readings you see on your phone accelerate towards zero significantly and parabolically, and this depends on which battery, once it passes 3.65V, which they tend to do around the final third of their life on a single charge with typical or somewhat constant use.

We are trying to find clues by running tests on a particular battery with no voltage cutoff to see what happens, if that kind of abuse worsens subsequent tests. We're right in the middle of this now and it's getting interesting. So far no sign of that, that nosediving down to zero volts causes damage.

Then Telek suggested maybe the battery's got some kind of battery brain in it that shuts itself off from providing any power below a certain level, which Rotohammer affirmed, noting that it might be 2.2V. Took a closer look at the data, seems that is in fact the case, though for this sucker around 2.35V. I removed the circuits that might be responsible for this and will run it again. Running now at 500mA, took very little time to crash down, still got a little left. This one's going to be interesting. Wish I had sprung for that temperature diode.

For science.
[Nexus One Accessories] iheartn1:
If the Seidio 3200mAH battery is rated at 84%, is it safe to assume their 1600's are also rated at 84%, making them lower performing than a stock battery?
[Nexus One Accessories] ram130:
Well GALLERY seems to be there at most boots. So far I am using JuiceDefender and been doing my regular thing its now at 7hrs 36m with 45% remaining.

Battery use looks like this:

Display 55%

Voice Calls 16%

Cell standby 10%

Android System 6%

Phone Idle 4%

Android OS 2%

Browser 2%

akmd 2%

So far all I have done is read a few articles(around 10min while on the train)..send sms and 14min worth of calls. I have weather bug, news and email updating like every 3hr..

I guess my battery sucks? I'm already ordering a third one with a dock charger..
[Nexus One Accessories] Cheeze[iT]:
hope the seidio tests are good. Still debating on the 1600mah or the 3200mah. Hope the 3200 with the battery cover removed can still use the google dock.
[Nexus One Accessories] d0ugie:
Well first I need to note that I've only completed one in three to five tests of the thing. The first test was after having charged the battery from the charge it already had when shipped. These companies claim you need to run it a bunch of times for it to perform better but I haven't seen much of anything to affirm that from the testing of all the other batteries.

Anyway the second test will be done around 4am EST and I'll put it up tomorrow morning.

So, assuming this battery's subsequent tests are more or less the same, given that the OEMs of different capacities I've tested (1100, 1400 and 1500) have performed consistently well versus their rated capacity (94-97%), it's not dangerous to infer that the claimed capacities versus tested capacities will be proportional for each company's different batteries. But I wouldn't bet the farm on it. Best I can do is test more and more batteries to provide conclusive information for you, which I'm working on. Were I to test a Mugen for the N1, based on my experience with the TP2 Mugens, I would be surprised if an N1 Mugen scored any higher than 81%.
[Nexus One Accessories] ram130:
What do guys think of my latest results? I was on 3G all day btw...2g at home with wifi...I made another 4min call and so far its been down to 30%...now charging it..
[Nexus One Accessories] rotohammer:
I'd bet on on it.
[Nexus One Accessories] jcr916:
Do you have WiFi searching for a signal all day or do you manually turn it on (and 3G off, 2G on) while you are home?
[Nexus One Accessories] t41n7ed:
Anyone have any experience with Seidio's 1600mAH battery? Looking at other forums, people are saying that it doesn't last as long as stock.
[Nexus One Accessories] rotohammer:
Stay tuned to this thread or http://batteryboss.org . I think there may be test results for that battery next week.
[Nexus One Accessories] Cheeze[iT]:
any luck with getting a 1600 mAH battery? Still can't decide between 1600 vs 3200
[Nexus One Accessories] ram130:
Wifi is only on when I'm at home..I turn it off as soon as I'm out the door. I always have 2G enabled when at home too... :mad: I think my P/N might have something to do with a bad batch relating to battery life. It ends with F and so far everyone who's part number ends F has reported horrible battery life..:eek:
[Nexus One Accessories] d0ugie:
big day

Well all right, got some new batteries, both from Rotohammer. One Seidio 1600mAh, exaggerated like their 3200mAh, was the .. well, look at the data. Still need to run it more times to be fair but jeez Seidio.

Getting a Cameron Sino 2400mAh warmed up. Holding out hope that these guys are (relatively) legit.
[Nexus One Accessories] paulk_:
Hope the Cameron Sino is more faithful to the rating, keep up the great work d0ugie!
[Nexus One Accessories] walie:
i doubt it,

http://xdaflameusers.com/viewtopic.php?id=1326

granted the pic was from 2 years ago though...
[Nexus One Accessories] paulk_:
Ouch.. Maybe someone needs to take a look under the hood of the 2400mAh too
[Nexus One Accessories] rotohammer:
Oh, I will :)
[Nexus One Accessories] rotohammer:
Just got my Cameron Sino 2400 battery for the Nexus One.

First observation: weight=51g.

Compare that to the Seidio 3200 which is 58g. Since the Seidio 3200 actually tested to be 2650mAh, lets do some math to predict the CS2400's actual capacity.

51 X
------ x ------ X = 2330mAh
58 2650

Since all batteries tested to date test in lower than their stamped rating, this sounds like a reasonable real capacity.

Ok, I can't take it any more, I need to open this sucker up! Stay tuned for pics.

Notes: No capacity or other markings on the two cells. Cells seem to be the thick wall high quality type, as opposed to the squishy foil walled cells.

I just checked Doug's test results on batteryboss.org, 2025mAh !! Wow, thats crappy! Maybe the next two test runs will improve :)
[Nexus One Accessories] paulk_:
Well, at least the rated vs tested is on par with Seidio's 3200..

Is the Cameron Sino the same size as the 3200? As in, will it fit the 3200's extended door perfectly?
[Nexus One Accessories] rotohammer:
I'd accept it if the OEM batteries performed as badly.

The batteries are exactly the same dimension, so yes, I'll use them interchangeably.
[Nexus One Accessories] paulk_:
Sweet. Wonder whether I should buy this battery. Still waiting for my Seidio 3200mAh replacement to arrive (shipping time via USPS First Class to Singapore is horrific), though if I get this battery I have no idea what I'd do with it once I get a working 3200.
[Nexus One Accessories] paulk_:
Found a 2700mAh battery at http://cgi.ebay.com.sg/2700mAh-Extended-Battery-Cover-for-HTC-Google-Nexus-One_W0QQitemZ110519575326QQcmdZViewItemQQptZPDA_Accessories?hash=item19bb7ae31e#shId, anyone gonna try it out? Feel like trying it out myself since it's close to where I am so shipping and delivery time won't kill me lol
[Nexus One Accessories] momulah:
Help Dougieg Have any idea at all???

Hi guys and gals I recently posted about my purchase of a genuine HTC Branded Tilt 2 2150M Extended Battery. The battery does not seem to charge while the phone is powered off. No notification light showing it is charging. Even if powered on the battery does charge according to the taskbar, but the notification light still does not show.(RED or Green) I didnt think it was a rom issue but now I know it is as I placed the battery in my girlfriends tilt 2 with stock rom and everything displays and notifies correctly when charging. Even with phone powered off.

Now please can anyone(NRG) please help me or have any idea what reg edit might fix this problem as I have no idea what this rom is missing compared to stock. Hopefully it isnt a manila issue as I have 2.5 21898 with cookietab and my phone doesnt even want to power up using the battery. And yes it does work perfectly in my girlfriends phone and her standard battery works in mine.
[Nexus One Accessories] d0ugie:
Hmm, tough one. The 2150 battery I tested charged fine both with the phone on and off, LED and all. Are you able to charge and use your old battery? Though I posted the TP2 battery's data here along with all the others I tested, you're in a Nexus One forum now and you might have better luck here.
[Nexus One Accessories] SBS_:
d0ugie:

I saw you wrote that the seido 3200mAh battery didn't come with a back door and I'm not sure I understood you correctly, but it does come with a battery cover if that's what you mean. Maybe rotohammer forgot to ship it to you?

edit:

I apologize if this has been talked about earlier in the thread.
[Nexus One Accessories] d0ugie:
IIRC it came straight from Seidio, unopened. And right, I meant it didn't come with the thing that would cover the oversized battery. Maybe that's an option to specify on their site, not sure.
[Nexus One Accessories] momulah:
Yes standard battery works fine. Dis it work on a custom rom on your end or stock. It works as it should in my girlfriend tilt 2 with stock. But yeah AI'll post in the rhodium forum. Thanks for the info and great website I use it all the time for my fuze and tilt2.
[Nexus One Accessories] SBS_:
It states on their site that it's included and I got it with my 2800mAh battery, so if it came straight from them I guess it's a packing error. I assume rotohammer only sent you the battery though as I noticed he talks about the cover in the 3200mAh-thread.

Great that you're testing these after market batteries btw :)
[Nexus One Accessories] d0ugie:
Got NRG on it too.
[Nexus One Accessories] d0ugie:
need slashdot bumpage

Trying to get a story on this through Slashdot and it could help if some of you'd go on the pending page and give it a + bump or leave a comment on it. Thanks.

http://slashdot.org/firehose.pl?op=view&id=11574546
[Nexus One Accessories] INeedYourHelp:
So as of right now, does any slim battery beat the default battery in capacity?
[Nexus One Accessories] rotohammer:
Nope, original HTC batteries from Google are the best in the slim/stock class.
[Nexus One Accessories] bridgstfer:
Thanks for this

I think these independant tests will save alot of people money. It did sound almost too good to be true. Also when you compare that a 4000mah external batery pack is nearly as big (if not bigger) than the phone its difficult to believe that a battery double the OEM size can be 3200mah - although it would have been nice!

I might just go for one of these external bad boys for long trips/travelling and get a spare OEM to carry round for emergencies. Although my Desire battery now lasts 1.5days easily now after a few charges!!!

Could you use the same equipment to test the capacity of the external battery packs?
[Nexus One Accessories] tuatha:
So, just to confirm... the 1600mAh Seidio battery (which I ordered yesterday) will actually perform WORSE under real-world conditions, than the stock battery?

:mad:

That is what we're saying, yes?
[Nexus One Accessories] paulk_:
In all likelihood, yes. Then again it is possible that the tested battery was from a bad batch, though a long list of tested batteries makes this rather unlikely.

Dougie and roto, since you guys have more experience than the average person in these batteries, I'd like to ask whether a battery that's hit 0% (auto shutdown) should be able to be powered up again. I managed to hit 0 on my replacement 3200mAh (which doesn't seem to be performing at anything more than 2000mAh), but I find I can still turn it on (5 times and counting) since then. Didn't manage to turn my phone on when my stock battery hit 0%.

If this means that the battery's inbuilt indicator is faulty and there's actually juice left when it indicates there isn't, is there any way to fix this?
[Nexus One Accessories] rotohammer:
Yes, but I like to think of it more bluntly, "we got ****ed over!"
[Nexus One Accessories] rotohammer:
0% charge on the phone just means the battery hit the controllers lower limit of around 2.5 volts. Sure, theres juice left to drink, but it's at the bottom of the glass with a spider floating in it. This mechanism is what supposedly protects the cell from damage.

But, just for fun, Doug ran one cell down to zero volts several time to see if he could get it to fail, but surprisingly it didn't.
[Nexus One Accessories] paulk_:
Thanks for the reply, Roto!
[Nexus One Accessories] B1ny:
Re: [PRJ] [April 16] Investigating battery capacity claims.

I have been using my 2400 mah battery for 4 days now( around 8 cycles), and can't say I think it lasts longer than the standard battery. If there are any difference, it must be in favour of the standard battery.

And there are no way it have the 2000 mah, that was measured on the other battery that was tested. Is it possible that 2 batteries can perform so differently?

And if so why?
[Nexus One Accessories] B1ny:
Re: [PRJ] [April 16] Investigating battery capacity claims.

I have a 2700 mah on its way over as well, and will use the 2400 one until I get that one. Then I plan to use the 2700 until I feel confident how that perform, before i switch back to the standard battery for a few days to double check.

Edit: just got it, on charge now, very excited to see how it will perform tomorrow. It is actually a bit thicker than the 2400 battery, must admit that I had not expected that. Guess its around 2mm or so, so at least its not the same as the 2400 I already have :)
[Nexus One Accessories] B1ny:
Re: [PRJ] [April 25] Investigating battery capacity claims (read: lies).

Well......

After running first the 2400 mAh for a couple of days, and getting more and more suspicious about the claimed mAh, then the 2700 mAh one and getting even more dissatisfied with that one, I decided to run a simple test to confirm my suspicions. I decided to put brightness at max, bluetooth on, leave sync on, GPS on and start up the video streaming app Qik. I ran it with live GPS tracking and left it on my living room table until it ran out of juice. First up was the standard 1350 mAh battery, it managed 110 minutes. Then the claimed 2700 mAh one, it survived 118 minutes, and at last the claimed 2400 mAh one, that managed 115 minutes. And this confirms my suspicions almost exactly, although I must admit I felt the 2400 mAh one was a bit weaker than the stock one, and the 2700 one a tiny bit better. But anyway, its so close to my experienced feelings after running them for several days at work, with very equal usage each day, that made all of them last almost the hole 8-9 hours on one charge, that I will not bother to run any more tests. Its good enough for me. So that means my claimed 2400 mAh battery is only around 1400 mAh, and my 2700 one is also only around 1400 as well. And this is batteries that are around twice as thick!

Can also add that the charge time are about equal on all 3 as well, and that everything is measured with Juiceplotter.

I can also mention that I earlier have bought a 2200 mAh one for my Hero, and a 2000 mAh one for my Liquid, with exactly the same feelings and suspicions. Have never done any tests to confirm them though, and now I will not bother either. Guess I will rather stick to OEM stuff from now on.
[Nexus One Accessories] wapkil:
Hi all,

My first post on the forum. I recently bought the Desire and came here looking for the data on the replacement batteries. Thank you for all the tests and the valuable information :)

Is it confirmed that the phone 0% level means 2.5V? It seems much too low. At this level with ~0.2C discharge the battery would probably be severely overdischarged. The overdischarge protection inside the battery could be set anywhere between 2.1V-2.8V but the phone should have it much higher, I guess in the neighborhood of 3.0V-3.5V.

An overdischarged battery usually won't fail immediately but will have its life shortened. The severity depends on how much energy was left inside when the load was disconnected and whether or not it was immediately charged back (it should be). It may be obvious but Li-Ion cells don't like being treated like that. If abused too many times they may become nasty at the next charge - with bursting into flames and emitting toxic fumes.

I noticed that the tested batteries are cut off at 3.5V. I think it may be a good choice - the voltage drops rapidly at this level and there wouldn't be much time left even if the level was set lower. On the other hand, Li-Ion cells capacities are usually given for the standard 0.2C discharge ("C" means the current that would discharge the battery in 1h, so e.g. for a 1400mAh battery 0.2C would be 280mA) down to around 2.8V. Just a note, in case some manufacturers would like to dispute the results.
[Nexus One Accessories] dogiedogie:
Ive read this thread with great interest, but can someone just confirm this fully for me? (N1).

For STOCK size, there are no batteries I can buy which are the same formfactor, which have a greater capacity than my stock battery [im writing off that '1600' seiko one]
[Nexus One Accessories] d0ugie:
That is correct.
[Nexus One Accessories] dogiedogie:
:'( Although TBH i can sit there all day raping the battery on max and still last 20 hours.
[Nexus One Accessories] rotohammer:
That is the reason all the after market batteries are compared against the results of the OEM batteries. It would be difficult for anyone to argue with the results.
[Nexus One Accessories] d0ugie:
expanding to Hero and Incredible

Thank you Dan Mason and Jasper Williams for hooking me up with an oversized but underperforming (big surprise) Hero 3200mAh no name and the stock 1300mAh Incredible battery respectively. Just finished round one of the Hero.
[Nexus One Accessories] d0ugie:
Okay, Hero and Incredible batteries done, mailing them back to their owners. Thanks guys.

Got someone sending me an EVO 4G stock battery, got a bunch of other guys emailing me asking me to test the Amzer 1800mAh. Seems the EVO people are desperate for more juice.

Anyway if any of you buy or have bought this phone, firstly, good luck with the battery life, secondly if you feel inclined to buy a spare I'd love to test it first.

Also got someone sending me a Mugen for the Hero, 3200mAh. Looking forward to either rub their noses in their continued exaggeration -- or exonerate them if they came clean and cut out the bull**** figures.

Doug
[Nexus One Accessories] the337:
Hello, I've been following your battery testing and I think it's great. I'm a current Incredible owner with the stock battery and I was thinking about getting the Seido 1750 but with the look of how Seido batteries are performing I might not get one. However, I've heard that the Incredible will work with other batteries such as a 1500 one or some TP2 batteries. Can someone confirm because I am in the market of getting a beefier battery I just want to make sure I get one that is compatible and works well. Thanks
[Nexus One Accessories] jasrups:
Just wanted to drop in and say GREAT job to all those who have contributed to this thread. Good stuff guys!
[Nexus One Accessories] wpbear:
I am using the stock TP2 1500 mah battery from the ATT tilt 2 in my new Droid Incredible. I am seeing about the same results as I was with the new 1300mah stock Incredible battery. The TP2 battery was used since December so about 7 months old. I was going to buy the Mugen 1800 for the Droid Incredible but now I am not sure what to do. Base on the chart I will get 1414mah from both a new TP2 1500mah OEM and Mugen 1800mah. So I guess I will get another TP2 OEM since it is have the price.
[Nexus One Accessories] vMAC:
I'm interested as long as you can promise / assure me that I will get my battery back ASAP and in good shape. Shoot me a PM if you can agree to this with your phone number and I will call you. If we can work out a deal I will get one sent Next Day to you so you have it on Monday.
[Nexus One Accessories] Diamond360:
Battery TP2 on Desire

I don't think that a tp2 battery will fit on the HTC DESIRE; the connects + - are on the side for the battery of the HTC DESIRE... I am quiet disappointed, I would love it will fit.
[Nexus One Accessories] spr33:
I've seen a few alleged 2700mah Nexus One batteries on eBay for next to no cash (http://bit.ly/9LYaKW) Any chance of testing one or will they just be re-badged 2400mah CS batteries?
[Nexus One Accessories] monkeydrufy:
Hi guys,

wich is the best battery for nexus one without change the cover?

thanks
[Nexus One Accessories] bugmenever:
more Incredible battery's please! 1500 mah oem, "2600" mah cheap HK battery from ebay, seidio "3200" mah, etc. etc..
[Nexus One Accessories] monkeydrufy:
no one can help me?
[Nexus One Accessories] tuatha:
The best battery, without changing the back cover, is the one that came with your phone. Sorry.

All those third party 1600mAh batteries are dodgy.
[Nexus One Accessories] monkeydrufy:
Hi guys,

what you think about this

http://cgi.ebay.it/2500MAH-EXTREME-...AU_MobilePhoneAccessories&hash=item2eadfa5e2d

or this

http://cgi.ebay.it/BATTERIA-MAGGIOR...&pt=Accessori_per_palmari&hash=item335e1b945f

do you have a photo of a similar battery (like cameron sino oversized) mounted on a nexus one?

thanks
[Nexus One Accessories] monkeydrufy:
Hi guys,

I'm using this battery

http://cgi.ebay.it/ws/eBayISAPI.dll?ViewItem&item=220622197855

it work very well, double time than original
[Nexus One Accessories] Goonish:
How do I calibrate an extended battery correctly?

I got a CAMERON SINO 2400mAh from this guy here after it seemed recommended by Dougie.

It doesn't seem to perform better than stock, even though it takes a lot longer to charge..
[Nexus One Accessories] zok-star:
:( damn was looking at getting one
[Nexus One Accessories] Goonish:
I just did a full drain last night in attempt to calibrate this battery, afterbthe phone hit 0% and wouldn't stay in the OS, I left in on the white bootloader screen and it lasted, get this, 7hours! I then made sure it was completely flat then it hit the charger with the phone off. It charged for 6hours and was still charging when I had to leave for a job. I just now turned the phone on, and in OS monitor it is now reporting 3100mAh and has been sitting on 100% charge for almost an hour now..

In other words judging by this complete discharge method I have somewhat successfully calibrated the battery. Without draining and recharging again I wont get a very accurate performance estimation but it looks promising.

There should really be a guide for calibrating extended batteries on here, I had no idea why the extra mAh wasn't appearing in my logs.
[Nexus One Accessories] zok-star:
Please let us know how you go with it!!
[Nexus One Accessories] Goonish:
Over 4 hours haven't let the phone idle or sleep at all, and still 100% battery according to stats.

1456mAh remaining. Percentage counter should kick in soon I would suspect..
[Nexus One Accessories] zok-star:
excellent!!!

Is the N1 heaps bulky with these bigger batteries? Like still ok to cary aroundin ur pocket etc?
[Nexus One Accessories] Goonish:
Doesn't add a huge amount to the phone still not as thick as my old n95, but its a comprise between a much MUCH longer battery life or an extremely thin phone. I can always swap them when needed. ;)

Full day of heavy use and I'm still at %35 charge.
[Nexus One Accessories] zok-star:
I've just purchased one of these 2400mah ones. Im not a very user so see how it goes for me!
[Nexus One Accessories] cmarti:
Here's another battery:

http://www.dealextreme.com/details.dx/sku.41892

The cover looks awful!