I've been checking out batteries for the Kaiser and I noticed something that I've never seen with other phones and pdas, the battery used in the Kaiser is a Lithium Polymer. If you're not familiar with that type of battery, its a battery commonly used for its lightweight properties and high current discharge rate (rate is based on battery of course). Most phones, pdas, electronics used Lithium Ion. For RC helis, Lithium Polymers or Lipos are very common and are treated with much care and respect. There have been a few accidents where Lipos have caused fires whether used in RC or being charged in the car and home. Lipos do not like being discharged pass a certain voltage, usually 3.0v and require balancing between cells which helps promote longevity. Since the battery used is only one cell 3.7 nominal (4.2 charged) balancing is not an issue, however complete discharge maybe another one.
Just thought I'd share a bit of information with everyone.
My old Sony Ericsson T68i used Li-Polymer also.
Many/most of the LiIon batteries in circultation for electronic devices today are LiIon Polymer batteries. The two types have nearly identical characteristics and performance properties. Both types of batteries can be extremely sensitive to heat and can produce a great deal. Both also have safety circuits when manufactured by a reputable company to prevent overcharging and the associated heat buildup and over use to prevent lithium plating which will effectively kill the battery. It's not at all uncommon for LiIon to be used to refer to both unless one is being extremely precise.
I wasn't aware about Lipos being used in other phones, good to know. I don't doubt manufacturers with proper safety devices as far as charging. Though I wish I could say the same about incidences from Lipo fires where reputable equipment was used to charge Lipos. My experience with Lipos have been with larger discharges and faster charging so I wouldn't think that we would have much to worry about. LiIons and Lipos are far as my hobby with RC helis and other vehicles stand as different as night and day, one being as safe as jello when abused and one being as dangerous as destroying a garage when neglected.
It's more a matter of degree. I've had a LiIon go "poof" in a cheap charger once. Luckily, I was sitting in the room where it happened so I could put it out before there was any real damage to anything other than the charger and battery. The polymers are more sensitive to heat, and have had a rash of manufacturing defects that have gotten lots of press.
If it's a quality battery and a quality charger, there shouldn't be many issues.
Well... so far I've ordered a 3500mah extended battery from Hong Kong.. but as I believe this will take rather a long time to get here... I've ordered another one from the UK as well from ECELL, which apparently has a silver extended cover.
I'm well aware that these are likely cack batteries and I have a plan for that
Basically I'm hoping that whichever one I consider to be the worst will either die on me... or I will simply end it's life prematurely. I am going to cut open the battery (Carefully!) and try to replace the cell's with two Genuine OEM 1500 mah batteries, for a true 3000mah. I bit elaborate but I think it should be possible as long as I cut in the right places.
EDIT: I found genuine LG batteries for about £8.50 each plus about £5 postage, so will order 2 batteries for around £22. They are special order though, so will take 14-28 days. (I am also getting them to confirm the capacity is defo 1500mah, as no point buying them otherwise.)
Update: Images in post #29 : http://forum.xda-developers.com/showpost.php?p=23120430&postcount=29
Well.. I was getting a little impatient... so when I was really tired (and may just a little to drink), I ordered one from ECELL on ebay. It had a silver cover and a 3600mah battery (We all know it isn't that much), and was listed for the 2x P990. Turns up.. it's for the LG Optimus S :-( Bummer. Just trying to get a return/refund.
So... experiment is delayed somewhat.
Update: Two LG OEM batteries have been ordered ; The incorrect extended battery sent back ; Still awaiting the HK Extended battery. Bizarrely I thought I actually ordered a 2nd UK based battery.. but I was so tired I think I forgot to do it lol. Can't wait to have a play with these
Refund form ECELL given without issue Have now received the 3500mah battery, and just running that to see how thing's are with it. I am waiting on the two OEM batteries to turn up from LG before I can start modding this extended battery.
Since I also have a bigger case now, I am going to look to see if I can play around with an external antenna as well.. and maybe fit a bigger antenna inside the expanded case. With that in mind I have ordered two antenna's of different types to see which one fits (expensive.. but then at least we all know )
Sounds really interesting.. keep us updated please!
Sent from my Optimus 2X using xda premium
Scougar said:
Refund form ECELL given without issue Have now received the 3500mah battery, and just running that to see how thing's are with it. I am waiting on the two OEM batteries to turn up from LG before I can start modding this extended battery.
Since I also have a bigger case now, I am going to look to see if I can play around with an external antenna as well.. and maybe fit a bigger antenna inside the expanded case. With that in mind I have ordered two antenna's of different types to see which one fits (expensive.. but then at least we all know )
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i got the 2400Mah battery(2 days of usage) i'm looking forward for you're results
specially the modded one pictures will also be great if u can.
thanks!
Apparently the LG batteries have been dispatched now, so should get them within a few days. Only annoying thing is that even LG were unable to confirm whether these batteries I'm getting are 1500mah. I will be gutted if they are not lol.
btw.. you should see my desk at present at home. I have about 5 phones, four of them in bits awaiting tinkering, LED bike lights (all modified), circuit boards from laptops everywhere, reparing a 4x 18650 battery pack + routers etc lol. And I just realised that I actually don't know where my soldering iron is ROFL. Must dig one out.
Anyway... I'm looking forward to it and if I can get it working, I'll put up pics etc. I'm very interested in trying to get the temp sensor working (although I realise it may only work for one of the batteries.).
P.s. as for extended cases and covers I bought this w w w.ebay.co.uk/itm/Clear-Black-Trim-Rubber-Case-Cover-LCD-Film-Pro-LG-Optimus-2X-G2X-/180782656771?pt=UK_MobilePhones_MobilePhonesCasesP ouches&hash=item2a177c6d03 and then cut out the back clear part. It's not a perfect fit, but it will work for the moment (Buy at your own risk.. I actually stretched mine too much when getting the clear part out).
Genuine LG batteries have just arrived about 30 seconds ago. They are 1500mah
So with the delivery charge added in they were £11.04 each (£8.49 each without delivery charge). So if you ordered more it would be less due to the one time delivery charge of £5.10. Not bad for a 1500mah genuine battery! Batteries dated 10/09/2011.
Scougar said:
Genuine LG batteries have just arrived about 30 seconds ago. They are 1500mah
So with the delivery charge added in they were £11.04 each (£8.49 each without delivery charge). So if you ordered more it would be less due to the one time delivery charge of £5.10. Not bad for a 1500mah genuine battery! Batteries dated 10/09/2011.
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Sounds good so will u start Modding them now?
Sent from my LG-P990 using XDA App
shpapy said:
Sounds good so will u start Modding them now?
Sent from my LG-P990 using XDA App
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Yes. I've now ordered a second "3500" mah battery so I have a spare cover and shell in case I **** anything up. I am just trying to gauge the capacity of the 3500 battery. On my first run it lastest almost 2 days on stock rom, with a fair amount of use. I would prob say only around 2000mah at a guess though.
I'm just trying to get it to run down again for a 2nd charge now.
Once all that's done, I'll open it up and start tinkering I will have to get both the LG batteries to the same state of charge as well (same voltage level) before hooking them up.)
Bear in mind I've spent £22 on original batteries that I am about to hack open for the cells inside, so there is no going back lol. Pretty expensive mistake if I **** it up relatively speaking.
Scougar said:
Yes. I've now ordered a second "3500" mah battery so I have a spare cover and shell in case I **** anything up. I am just trying to gauge the capacity of the 3500 battery. On my first run it lastest almost 2 days on stock rom, with a fair amount of use. I would prob say only around 2000mah at a guess though.
I'm just trying to get it to run down again for a 2nd charge now.
Once all that's done, I'll open it up and start tinkering I will have to get both the LG batteries to the same state of charge as well (same voltage level) before hooking them up.)
Bear in mind I've spent £22 on original batteries that I am about to hack open for the cells inside, so there is no going back lol. Pretty expensive mistake if I **** it up relatively speaking.
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no doubt it could be an expensive mistake, but if u succeed which i think you will the results will be probably a 4 day battery. so i think its worth it
i got the 2450Mah battery and it holds about 2 days with medium usage, so im really thrilled about ure test as i dont care about the size of the phone,
if you can share pictures it will be great you can also p.m if u want!!
thanks.
Shpapy.
No problem, will do
I charged the battery again last night, and rapid drained it running bluetooth (nothing connected), some GPS usage and wifi with smartshare running a video across from my NAS drive. In the morning it was down to about 25 percent so tried GPS on cycle to work and then drained it with music and GPS until 1%. Charged it without using it, and it's reporting about 1900mah estimated for the battery. I don't rate the estimator as highly accurate btw, but it's a guide .
I will try to take the battery apart tonight if I can. Not sure on best way to open it though, as I will need to reuse the carcass.
Damn.. was taking it apart and fried the circuit it came with. Unfortunately the metal legs that bring power from either side slipped off and touch the outer shell of the battery, was enough for a small yellow spark :-( oh well. (EDIT: Hmm.. circuit may still be alive actually...)
It's two batteries pressed together with several layers of thin plastic between them, either for insulation, spacing or both. I'm actually pretty surprised the cells weren't isolated better from each other.
Update 1: Well, for the first time.. I just managed to burn myself with electricity opps. These packs are really badly isolated. Shorted it on the tip of my finger... beginning to hurt lol. There are NO ratings on these batteries whatsoever. However, one thing they are is... amazingly well balanced. Just measured them and they are both exactly 3.78V's.
Update 2: The circuit and LG Battery will NOT fit directly into the old casing. There will need to either a mod to the extended casing, or we'll just have to 'go without', and make a casing up. It's looking like it's best to do without using the old battery at all actually, and just wire the two batteries together using the LG circuitry. (Well only one of the circuits).
Update 3: Will dig out the soldering iron tonight and get this double battery running
Update 4: Have VERY BADLY soldered the batteries together and combined battery is now charging in the phone. Due to the excess solder on the sides the battery is not quite proper fit, so I will have to redo it at some point. Really very dissappointed with how awful the soldering is, I will simply HAVE to redo it once this experiment is tested. Any tips on a soldering iron chaps? On the plus side, the one thing I do get is a temperature reading :-D
Tip number 1: Quickly snip the circuit off first and DO NOT let it touch the side of the battery casing, it will short out.
TIp number 2: h t t p://www.technfun.com/pages/article.php?id=22 Excellent guide. Take note of the safety tip!!!!
Points of interest
A) The extended battery is EXACTLY double the width of an LG battery.
B) LG OEM Batteries are made by Sanyo
C) Don't use a conventional soldering iron... it is almost impossible to solder the negative side and you will end up overheating the battery if you are not careful. (Any tips here guys?)
Charge battery up last night, and stayed up wayy too late trying to drain it.
Technique... used the 'flashlight' app to keep the LED on, turned on bluetooth, turned on wifi, and use smartshare to stream a movie (at full screen brightness) to the phone. Played Dungeon Defenders for a while as well at full brighness so hopefully the graphics core would take more power. Battery Temp got as high as 40C under 1400mah draw. Odd thing was that battery widget pro at times reported +25000 Mah(ish), yes PLUS '+', and 25000mah, that's just insane..not sure where it was getting the figures from :-(
7% battery left when I put it down, voltage was 3.550 or very close. This morning, voltage it still had 7% left and voltage had increased to 3.7 ish. Guessing it's because the battery was warm last night when under heavy strain, and now it's relaxed and cooled it's feeling better lol. (Or maybe something else?)
Running gps client down now in attempt to drain the rest before recharging. Ideally want to get it down to 1% before a full charge.
Scougar said:
Charge battery up last night, and stayed up wayy too late trying to drain it.
Technique... used the 'flashlight' app to keep the LED on, turned on bluetooth, turned on wifi, and use smartshare to stream a movie (at full screen brightness) to the phone. Played Dungeon Defenders for a while as well at full brighness so hopefully the graphics core would take more power. Battery Temp got as high as 40C under 1400mah draw. Odd thing was that battery widget pro at times reported +25000 Mah(ish), yes PLUS '+', and 25000mah, that's just insane..not sure where it was getting the figures from :-(
7% battery left when I put it down, voltage was 3.550 or very close. This morning, voltage it still had 7% left and voltage had increased to 3.7 ish. Guessing it's because the battery was warm last night when under heavy strain, and now it's relaxed and cooled it's feeling better lol. (Or maybe something else?)
Running gps client down now in attempt to drain the rest before recharging. Ideally want to get it down to 1% before a full charge.
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cool progress , can we get some pictures of the new battery?
how were u able to fit it in? i get u got a bigger case but still....
share with us ure images / knowledge its sounds really cool doing.
I basically copied what they had done on the 3500mah battery, and merely connected up the positive to positive and negative to negative terminals of the batteries using thin strips of metal, and only used one circuit from the LG battery. Basically I parallel the batteries to increase capacity.
I used a small spacer to keep the batteries seperated, but thinking about it, I could have use the bodies themselves as the 'negative' but it wouldn't have been a good connection). I then just taped the battery up and use the 3500mah battery sticker to hold it all together.
This really is just a 'prove it works' / prototype, and I will remake it neater, although I may have to buy a better soldering iron.
Pics later.
Note: After charging back up from 1% this morning to 100%, the 'estimated' mah by Battery Widget Pro is 1551mah. This would indicate to me that one battery is not connected properly unfortunately. I'm gonna run the battery and see how long it lasts under general usage. If it lasts only a day and a half, then I suspect I will have to resolder.
I bought a 3500mah half a year back and it wasn't any good. Twice the width but lasts the same as the original one. It'll be good if you could show us some pictures? I may consider making one too!
To be fair the estimated capacity of the 3500mah was around 1800 to 2000 mah. Pretty good considering it came with an extended back cover for under £5. It does seem entirely random though, and I was never comfortable without a temperature sensor.
The work I have done so far is rubbish to be honest. I thought I'd make a better job of soldering. I will have to redo it, as the fit is terrible due to the solder being too big/messy, and the connections are not very or or not working/broken.
Can't wait to see the results.
Sent from my Optimus 2X using Tapatalk
For some reason, battery widget pro was recording very high mah draw/drain. I do not believe I soldered the negative terminals well enough. I took it apart and tried to prise a little flap of metal up for soldering, and managed to rip the terminal off the pack. I will do my best to remedy this of course and let you chaps know the result.
I also have the 3500 mAH and I was wondering if it was really giving 3500 mAH. I'm getting about 1.5 days on this battery with moderate usage. Heavy usage I get about a day. I wonder what I'm doing wrong. I think it's supposed to last longer.
Hello all, I got a no-name 3600 MAH battery off of Ebay for 9.99, this one here and I wanted to say that it's been mostly good. It says that the seller ships from China but it actually came from within the US and came fast.
I have used this in my primary ATT model XP for about a month now. Thankfully this battery is genuinely more powerful than the stock battery. I don't know if it's 3600 Mah in reality but I estimate it holds a charge for at least 2x as long as the stock battery. I took a 3+ hour drive a few days ago with the GPS on with the screen mostly on and it only dropped from roughly 85% to 62%. It adds alot of weight to the unit and almost doubles the thickness, making it a far less elegant phone but arguably a more comfortable game pad; I do find the L and R buttons are less accessible, however. The battery back is plain piano black with no markings and apparently adequate cutouts for the flash and camera.
THRICE the phone has died without notice, with reasonable battery life remaining. Honestly this happened maybe just as much with the stock battery. The previous owner abused the phone a fair bit and I am tempted to chalk it up to that.
My biggest problem is that the extra weight seems to all be carried by the flex cable. If you pick up your XP by the screen half, which is a very casual, reasonable, and natural thing to do under normal circumstances, you're putting significantly more weight on the flex cable than it was ever meant to bear. There's nothing an aftermarket battery manufacturer can do about this I suppose, and sadly it affects all slider phones along the same lines.
Another big issue is that the channeling for the speakers is complete ****. Instead of coming out the bottom and being directed toward the user as is the case with the stock battery cover, this battery cover causes the sound to echo around inside and then leak out in every direction. It's not a deal breaker but is something to note.
Worth a tenner.
Last year I bought two of 'em (were around $11, the second one was a bonus), same maker, same model. Still rocking, nothing to complain about. Passed every test I threw at it (heat, overclock, stress, charge cycle, etc)
nice..
Lol no weight is put on the flex cable the slider is what holds the weight lmao has a stopper on both ends also to keep it from sliding out of the slider.
Sent from my LT28i using XDA Free mobile app
So I got one of these at the start of the year. Is it just my imagination or does it charge slightly lessen after 11 months? I could be wrong, but it seems to drain more quickly. Would love to know other people's thoughts.
Great
I purchased the Zerolemon battery case for the Note 9. The updated one for $40 on Amazon. Mostly with one use in mind (due to its large size making it not practical for daily use for me), and that's for when I use the phone as a hot spot to connect my Chromebook Pro to my Verizon LTE connection. I purchased the AccuBattery app to make an effort to only charge my phone up to 80% to avoid heat and stressing the battery. An alarm will sound when you hit 80% and I disconnect the cord. This will potentially double the longevity of the battery. So Under normal operation without the battery case the Note 9 is at 80 degrees Fahrenheit (no hot spot). With the battery case charging the phone it's running at 105 degrees while hot spotting. The app registers this as in the "red zone". That can't be good for the battery. Without the battery case running the hot spot the temperature is at 89 to 99 degrees.. still in the green zone and the phone only feels warm not hot like with the case on.
I don't recall the battery running this hot when I used extended batteries on my LG V20 to run the hot spot Wifi. When I picked up the phone it wasn't nearly this hot to the touch like when using the battery case. When I used an external power bank like my Anker 10 mAh PowerCore+ 3.0 quick charge, no heat issues either.
If recharging the battery causes heat in the battery case's own battery is the close proximity to the Note 9's internal battery likely to cause more damage than simply letting the battery run down to the recommended 30% (or when heat starts to pick up on the app) without a battery case? Then use the battery case to recharge when the phone is no longer in use?
I think it's safe to say that recharging the battery in the battery case while running the phone in a high output/discharge function like streaming, facetime or hot spot is really detrimental to the Note 9's non removable battery. The whole environment is too heated up. When I had the user replaceable batteries on my V10 and V20 this wasn't an issue because those batteries are very inexpensive compared to the cost of replacing a Note 9 battery. Reason #234 why phones should have user replaceable batteries.
I will post the battery temps when using an external power bank that's at least six inches away from the phone so that heat is not spilling into the internal battery.
Here is a screenshot of the AccuBattery app where I monitor battery heat under the discharge tab at the bottom right. Heat is the enemy.