yashsingh1/xdaforums huggingface dataset:
[Galaxy Note II Accessories] vectron:
You sure know your batteries :) Can't wait for your test results with comparison analysis!!! I might be getting of these external VA meters which has built-in mAh calculation

Btw, you really need to look into Zerolemon 9300 mAh battery whenever it's released! That was be an awesome test to run :)
[Galaxy Note II Accessories] golfinggino:
i really am amazed at the life of the 7960mah battery that i have - i had to go back to the n7105xxdmbe ultimate rom as i was having some issues with liquid smooth - so ran it all day - i run the latest perseus kernel, at a 87.5mv undervolt across the board and run it at 1.3 ghz maximum as as usually so with the stock battery, with pegasusq governor, i was hoping to give it a really good testing as i did when i first got the battery but i was too busy at work to really push it - anyway - the battery is now at 80 % remaining, the phone has been running for 14 hours 19 minutes and the screen on time is 4 hours and 4 minutes - it is really quite impressive - if the battery wasn't so thick i would certainly use it everyday and that is all on lte i did not turn wifi on at all today
[Galaxy Note II Accessories] vectron:
Are you using it just with just a battery cover or with modified Defender? It's double height, right?
[Galaxy Note II Accessories] golfinggino:
yes it double height and i am using it with the cover it came with what is a modified defender ? can you fit it is the otterbox defender case somehow ? i would be interested in this - i have had numerous defender cases in the past and for my note 1 but not for the note 2 - btw i always cut out the plastic screen on it as it was terrible and always made the screen look really bad - are they any better now ?

edit just googled it and found one for the s3 - pretty cool - i will pick up a defender case in the next few days and try this out - i will search now for any note 2 specific instructions for the mod - i had no idea about this - thank you very much !
[Galaxy Note II Accessories] johnrbrown1968:
I have a non rooted GN2, and get $#! + for battery life. I bought an extended battery, hyperion 6200mah, and pretty much the same. I have monitor brightness turned down, I kill apps I'm not using, and I'm using battery saving mode.

I may have to root this thing at some point, cause I'm kind of annoyed by the lack of battery life I expected better. It's better than my old Samsung Charge, but not by much. I don't even find myself using it constantly, but I do monitor the battery life just out of curiosity, and it uses roughly about 10% battery life per hour.
[Galaxy Note II Accessories] -EViL-KoNCEPTz-:
Killing apps kills battery. It takes more juice for them to keep restarting than it does for them to idle. Let android handle the apps it does it just fine.

☆SoA: Son's of Android™☆

I like to break stuff! :D
[Galaxy Note II Accessories] vectron:
Install GSam Battery Monitor and find what's draining juices out of your phone. I guarantee it's some app...
[Galaxy Note II Accessories] golfinggino:
so you are saying your phone runs out of battery when it has been running for only 10 hours ? something does not sound right - this is my second note 2 and i have never had it a day without being rooted so i cant comment on a stock phone but i would have thought it would last longer then this ! even the note 1 which is not even close to the battery of the note 2 could go more then your phone !
[Galaxy Note II Accessories] ViciousMo:
The general consensus throughout the GN2 forum is our battery life is incredible. You either have incredibly high standards or are doing something wrong. Stock, non-rooted, My battery life was great.
[Galaxy Note II Accessories] johnrbrown1968:
For example, if I take phone off charger when I leave work at 530, go to the gym, using the GN2 to listen to music, home by 7. By midnight, through continuous texting and some facebook & twitter, my battery is at 10%.

Now, that's also using a wifi connection at home. I don't own a computer.

But even if I'm at work, and my phone sits on my desk, it seems to drain quickly .... and I can't even use my phone at work, other than listen to music or watch the movies I have on there, cause I get no network connection.

---------- Post added at 10:21 AM ---------- Previous post was at 10:16 AM ----------

Well, if by "doing something wrong" you mean the fact I use my phone .... my standards were set based on reviews and feedback before I bought. I've rooted phones in the past. This is my 4th android based phone. I knew what to expect. And given the reviews, and research, plus reading on here, I was surprised with the results I'm getting.

I get half a day heavy usage. Moderate usage, it will last almost a day.

Do I have constant access to a charge point? Yes .... but I don't want that to be a necessity. For example, I'll be in DC this weekend, and to a couple days of sight seeing, I don't want to have to worry about my phone shutting off part way through the day, after taking some pics, and posting stuff to facebook, etc.

---------- Post added at 10:37 AM ---------- Previous post was at 10:21 AM ----------

Installed this ....

Handcent SMS was eating 20%. :(

Uninstalled that. going to watch my battery life. I'm contemplating root in the near future. Yet TBD.

Also going to go with the ZeroLemon 9300mah monster when it comes out. :D

Thanks for the suggestion on the app.
[Galaxy Note II Accessories] abcdef121448:
AW: Extended battery

Lol 9300 mah sounds quite interesting i've got a 6500mah battery bought from ebay but i think its quite weak i'll do a test with nova tester now. And i'll attach a pic of it :)

Lol sry for the MISERABLE quality but my cam is buggy so i made a screenshot :D

Gesendet von meinem GT-N7100 mit Tapatalk 2
[Galaxy Note II Accessories] johnrbrown1968:
Upon further analysis, I'm getting worse performance from the Hyperion battery. I'm putting my stock battery back into tonight.

I'll monitor the ZeroLemon 9300 products, and maybe come June, buy a battery with the rugged case.

I'm beginning to think I got a lemon GN2, cause my battery life is plain awful in comparison to what everyone is saying I should be getting.
[Galaxy Note II Accessories] abcdef121448:
AW: Extended battery

Lol i did the test but i forgot to load my product specs so i jst got a score, i'll have to test again :/ and then i'll send you a screenshot of ma the test with the mah

Gesendet von meinem GT-N7100 mit Tapatalk 2
[Galaxy Note II Accessories] abcdef121448:
AW: Extended battery

Yeah finally i've got my test score and it's absolutely dissapointing, well the accu was just 13.50€ but loook at the picture and you'll see its real capacy :/ i think i mustn't post a link gor this :/

Gesendet von meinem GT-N7100 mit Tapatalk 2
[Galaxy Note II Accessories] abcdef121448:
AW: Extended battery

Rather disapointing :/

Gesendet von meinem GT-N7100 mit Tapatalk 2
[Galaxy Note II Accessories] babiegurl36:
I had the hyperion battery. Didn't like it either and complained to the company. They refunded my money. I have the Anker extended battery and I simply love it!
[Galaxy Note II Accessories] johnrbrown1968:
I'll look into the Anker battery. Thanks!

Admittedly, it doesn't seem what battery I use, I'm getting terrible battery life. My phone chews up battery when it's just sitting there.

I've used battery monitors, I kill unused apps, etc. I even have the power saving mode checked in the default settings.

My phone just hates me. :p
[Galaxy Note II Accessories] golfinggino:
i just did the ottermod defender case mod with my 7960mah and working perfect - slight budlge at the back but hardly noticable - i had no idea this could be done until i read it in this tread - thanks for the info !
[Galaxy Note II Accessories] Andrew149:
So you can't do this on a stock battery?

Google now and latitude enabled with 5 accounts syncing
[Galaxy Note II Accessories] johnrbrown1968:
Can't do what? I'm not sure what you're referring to.

I've used stock battery. And I've tried Hyperion extended. Both get crap for battery life, regardless of moderate to heavy useage. If I don't use the phone, it still drains quickly.

I installed GSAM battery monitor, and nothing noticeable or extreme. I've kill apps I don't use regularly .. for example, the facebook app. I'll use it to upload photos, but prefer the mobile browser site. So, as soon as I'm done with the facebook app, I kill it.I don't have anything that seems like battery hogs.

I have virus software. phone appears to be clean.

I don't know what it is.

Again, I think I got a lemon GN2. cause it just doesn't make sense otherwise.
[Galaxy Note II Accessories] vectron:
Yeah, you can troubleshoot until cows come home. But the main point here - you tried stock and extended battery on the same phone with a same set of apps and general use of the phone. You should have seen some improvement with extended battery (although I heard some Hyperion ones could be lemons). You might have an issue with a phone. If you got it at Verizon or ATT, their on-site tech support has a test station to run phone discharge test where you leave phone for a few hours while they monitor discharge rate of the phone to determine if its battery or phone, etc. Might worth a shot. Or just go straight to them in a face with your facts and demand replacement! :)

One more test worth trying, maybe put phone in airplane mode and turn other stuff off to see how fast battery is discharging? Maybe your 4G or GPS antennas not locking in (keep searching while battery draining at extreme rate)?
[Galaxy Note II Accessories] ghostcamed302:
Dose anyone make a decent/good slim extend for the Note 2, that is actually bigger than the OEM battery not just 200 more mah.
[Galaxy Note II Accessories] vectron:
Been looking for it too. Have 4200 mAh OEM size Gold extended on order, but read contradicting reviews about it. Some say it will be no more than 3100 mAh, others say it might be 200 more. I have seen a number of different HK retailers selling 4200 mAh but their "gold" label looks different. I have no idea how it turned out, until I receive it.

I also got external VA meter a few days ago. Just need to set it up and figure out how it works. Don't want to do it on my stock battery. Might try it with Innocell first, or wait until I get Gold (4200 mAh) one.
[Galaxy Note II Accessories] rhd-android:
Excellent!

Which VA meter did you end up grabbing?

If you need any help with hookup, let me know.

Cheers
[Galaxy Note II Accessories] vectron:
I borrowed friends Turnigy 130A (http://www.hobbyking.com/hobbyking/store/uh_viewitem.asp?idproduct=10080) for this experiment. Got a few high wattage ceramic resistors (from 2 ohm to 10 ohm, different values) for the load. Made a little auxiliary power supply cable to feed off wall charger with usb to 3pin-header going to Turnigy (Turnigy can use external supply to discharge battery down to 0). The only problem, I'm having a hell of a time clamping leads to the battery itself. I actually though to use pieces of paper clip to bend it into contact and tape it to the battery, but it's not making a good connection because contacts on battery are recessed. At this point I'm just thinking for a more reliable test to buy some cheap battery charger for our battery type and connect +/- wires from Turnigy directly to the charger internal power wires. This way it will be a clean setup where I can just pop battery in and out. Btw, for my first test I will be using my Innocell 4500 mAh extended battery, and after charging it to full 100% inside my phone, I just measured it to have 4.3V. I thought it supposed to be 3.7V output... But anyway, will probably wait for external charger to arrive before I can do any tests.
[Galaxy Note II Accessories] rhd-android:
Thats a nice looking unit!

Keep in mind that you'll need to use an auxiliary battery for the meter's power source, so that it can measure down in the single cell range.

4.3V is an appropriate charged voltage. Really, the max should be about 4.2 or 4.25, but that little extra is nothing to worry about.

3.7V is the nominal voltage of lithium ion, but it's higher when fully charged and lower when depleted.

You'll likely observe that at 2.5V, the battery suddenly drops to 0V. This is the battery's protection PCB kicking in to say "okay, I'm empty now, charge me"
[Galaxy Note II Accessories] vectron:
What are you planning to do for Note 2 battery hookup to VA meter? Still making custom pcb? As I mentioned in my previous post, I did place an order for a cheap (under $4 shipped) battery charger where you can pop battery in. I figured to take it apart, disconnect ac circuit and just bring out 2 wires out to hook up to VA meter.
[Galaxy Note II Accessories] rhd-android:
I use these:

http://www.ebay.ca/itm/1pc-Copper-D...l-Phone-Battery-Probe-Test-Clip-/170883701001
[Galaxy Note II Accessories] vectron:
Uh, I couldn't understand why you were raving about those clips before - I didn't notice a probe inside of it. That's awesome!!!! Placing an order for a pair now!!! I guess will have to wait 2-3 weeks since its coming from CN. But in a meantime will have that charger next week modified to run my test ;) Thanks for that link above, a truly universal clip!!!
[Galaxy Note II Accessories] johnrbrown1968:
Thanks! I'll give both options a try!
[Galaxy Note II Accessories] BigBison420:
Just ordered my note 2 yesterday should be here by Wednesday..... Also just orderd the EzoPower 6200mah.... saw a guy who reviewed a zillion batteries online and he said that the EzoPower had a little more capacity than it actually advertised.

I currently use the Note 1 and have a 5400 Jap battery i got for $10 off ebay...... it actually works pretty well, i will give it that, despite the MAH that it truly is... Definitely better than stock.
[Galaxy Note II Accessories] eijisawakita:
I ordered yesoo 6500 mah battery, comparing it with anker which has 6200, it feels lighter and just the same size as anker. Ill run it for a couple of days to see if its legit or not.
[Galaxy Note II Accessories] vectron:
Didn't receive the probe clips yet, coming next week. But got that cheapo batter charger, brought out power wires connected to contacts, and using it as a cradle for stock-footprint battery to run the test (extended battery will not work since contacts are aligned with a slim battery in there). Also, put 10 ohm resistor as my load. Testing 4200 mAh Gold battery I got which by initial use in the phone felt less than stock. So far started at 100% fully charged and about 4.3V, and after 3 hours it's down to 3.77V and Ah reading is up to 1185 mAh. It's draining very slowly. I probably should have put 2x 10 ohm in parallel on the load. But the question is that Ah reading is keep going up, so when should I take the final reading? When it's down to 2.5V or 3.7V or when battery shuts down?

Btw, here is my little setup. VA meter is in a back. I have external wire (3-pin header to the VA meter, usb side to a charger) to keep it on even if battery goes dead. Load side has two clips holding the resistor load (10 ohm). Battery side goes to modified battery cradle. Once I get my probe clips, I will disconnect cradle and connect another set of alligator clips to go to the probe clips.
[Galaxy Note II Accessories] vectron:
I will wait for rhd-android to "validate" my test setup and results :), but pretty much after 5.5hr of test while draining 4200 mAh "Gold" battery, this was my final result before I shut it down.

Perhaps if I would wait until voltage drains down all the way to 2.5V then mAh reading would be a little higher, but I don't think 2.5V is realistic operation voltage for the phone while perhaps 3.65V is a good cutoff.

So in summary, 4200 mAh labeled "Gold" no-brand battery performed at 2050 mAh.
[Galaxy Note II Accessories] xartic12:
Ebay needs to be informed of the fraud that is consistently happening with this. You can just instantly peel the label back and have a different battery capacity listed.
[Galaxy Note II Accessories] vectron:
Trust me, that was the first thing I did when I got this battery. I removed the "gold" sticker to see what's underneath. There was no other print in there. They got sneaky and already know what we are looking for lol!!! I was hoping for this battery to be at least 3100 mAh capacity, but clearly it wasn't. While using it, I noticed it was discharging a lot faster than my original 3100 mAh.

Another problem are those external power banks with 20k mAh ratings for $16-$20 which are probably no more than 6k mAh. Don't want to waste my money on any of these just for test purpose. But it's clearly misleading!!!
[Galaxy Note II Accessories] apallohadas:
Very impressive setup Vectron!
[Galaxy Note II Accessories] xartic12:
A lot of times people are misled about the Mah due to the output voltage.
[Galaxy Note II Accessories] rhd-android:
Couple comments:

1) You *should* drain the voltage all the way down to 2.5V. That's the "depleted" voltage for the LiPo / prismatic cells they use in smartphone batteries. The drain from 4.2V (charged) to 2.5V (depleted) is what matters, and it's what even the OEMs (Samsung, HTC, etc) base their capacities off of. Further, I wouldn't be surprised if the phones do in fact use the cells right down to 2.5V. Most of the circuitry in a phone requires a very specific voltage (probably 3V or 3.3V), so you know that our phones have to contain a boost/buck circuit. Given that, there's no reason for them not to operate right down to 2.5V.

2) The peel-back-the-label trick doesn't always work. I've looked inside a dozen or so cells (that were crappy) that didn't have anything printed on the inner contents.

3) I've mentioned this before, but a true 5000 mAh external pack may only translate into 3000 mAh (or less) of usable charge after you factor in the losses due to:

a) Boosting the li-ion voltage up to 5V for USB transmission

b) Bucking it back down to 4.2V for internal phone cell charging

c) The losses inherent in the charging process (because you're charging an internal cell)

4) If you want an external power bank with ratings you can count on, there's only one way to do it right. Buy a 4x 18650 USB powerbank box. Add your own cells, but buy quality (like OEM Samsung, Panasonic, Sanyo, or Sony cells).
[Galaxy Note II Accessories] rhd-android:
I probably don't have the free time to echo the presentation quality of my Sensation / EVO 3D battery shootout. But I still wanted to share my results as I go. If any batteries turn out being worth the buy, I'll actually link them this time around. Here's the first cheap Note 2 battery I've put to the test.

Bottom Line: Don't Bother

Price: ~$5 shipped

Source: eBay

Claim: 3800 mAh

Actual: 2000 mAh
[Galaxy Note II Accessories] xartic12:
Is there a way I could donate money via PayPal to have an Onite battery thoroughly tested?

It's always good to see interest in real world testing of battery capacity versus the variable testing methods of normal use.
[Galaxy Note II Accessories] rhd-android:
I guess I could test batteries on request (apart from whatever batteries I end up testing on my own accord), if people will pitch in to cover the cost.

Although I couldn't actually figure out what an Onite battery costs, shipped to Canada, because the only place that seems to sell them is Amazon.
[Galaxy Note II Accessories] xartic12:
I have an extra one that has been sitting around for months I could send, but testing a new battery is much more reliable.
[Galaxy Note II Accessories] vectron:
Thanks for your feedback! Once I get those test clips sometime next week, and hopefully Zerolemon 9300 mAh in a week or so - will resume my testing! I actually think most of the ICs they are using probably 1.8V, but they gotta have some voltage watchdog to shut off below certain threshold, and 2.5V sounds like a reasonable number.

Btw, since I have been reviewing a number of External battery packs lately, I see that a few vendors come forward and tell you exactly about the loss. I'm very pleased with Anker brand in general, and their manual explicitly states that actual capacity of the battery is 30% less due to conversion factors. Now, here is a question. Some batteries specify their output at 5V/xA, versus others specifying it at 3.7V/xA. The power is obviously V*I=P. And the battery cells should be at 3.7V nominal voltage, while usb is 5V. So, where/how do they determine current source for 5V vs 3.7V? Just gets confusing, everybody is using 5V and current output to indicate how much current it can supply. So if you use V*I for 3.7V versus current, and then convert it into 5V - you are getting less current supply. Tricky?

Also, for External battery chargers, I assume I can test them just like any Extended battery, just have a custom usb connector with a wire fanout to clip leads to.

Last but not least, you might find this interesting. I was trying to charge my bt headphones from one of those External batteries, and it didn't work. After further reading, I found those require at least 100mA-200mA of load in order to start charging. Since bt headphones were under 100mA, I ended up just using OTG cable connected to my Note 2 to charge headphones up :)
[Galaxy Note II Accessories] rhd-android:
Current supply is tricky, and I'd just ignore that figure almost entirely. For the purposes of capacity, the current capabilities of a given pack aren't really super important. If a power bank indicates a current by saying something like "5V, 2A", they're really just saying that the output is 5V, and that the pack's cells and electronics are capable of supplying up to a continuous 2A. However, a 3000 mAh pack is 3000 mAh whether it can supply 1A, 2A, 500mA, etc.

So while you're right, and power is V*I=P, that's not really important for us. That just tells you the wattage of a battery pack, which isn't really important. A tiny little 150 mAh lipo pack from a remote control helicopter would be 3.7V, and might be capable of 8A because of the battery type. That would indicate 28 Watts of power. A 5000mAh external USB battery bank might be capable of 5V @ 2A, indicating 10 Watts of power. But clearly, even with roughly a third of the wattage, the external USB battery has way more capacity, and is much more useful for powering our devices. See what I mean?

Regarding the test of external batteries, that's actually a tough one, because ideally you want to get a figure that represents the actual usable power to your phone. If you just test the USB output, then you're not factoring in A) the bucking back down to li-ion charging voltage that occurs in your phone, or B) the power loss owing to the inherent inefficiency of charging one cell from another cell.

Ideally to get a meaningful sense of the actual usable capacity that will make it's way into your smartphone life, you'd want to do this:

(A) Plug a MicroUSB charging cable into your power bank, and then hook it into this:

http://www.ebay.com/itm/New-5V-Mini...67910?pt=Battery_Chargers&hash=item27cc077f26

(B) Use that board to charge a depleted smartphone cell, with the external power bank as the power source.

(C) Once charged, take the smartphone cell, and discharge it through your testing setup until it is fully depleted. Write down the capacity figure.

(D) Repeat steps B and C, until the external power bank no longer has any charge left. Sum together all of the discharge figures (assuming you conduct steps B and C more than once to deplete the external pack) and that will tell you how much power is actually going to be usable.