3.8v battery safe to use? - Samsung Galaxy Nexus

I've seen a similar subject for other phones but not for the GNex. I bought some OEM batteries off eBay and turns out they're fake... not only does the NFC not work but they also put out 3.8 volts where the real battery puts out 3.7... Does anyone know if this is safe to use. I really don't want to jack up my phone from using a bogus battery.
With other phones it seems that the main problem is the battery will not charge fully unless charged in the dock. I've used the battery long enough to check the voltage and if the NFC worked then took it out.
Sent from my Nexus 7 using Tapatalk 2

I'm not sure about the gnex specifically. I have an extended battery in my G2 and on "battery widget" it says it's 4.19V, on the battery the label reads 3.7VDC. It is a ebay china battery. I can't say if the widget is accurate or not, but I haven't had any issues on my phone.

Lithium batteries fully charge around 4.2v, 3.7-3.8v is for storing the battery long term. Since at that voltage there isn't much stress on the cells.

Thanks for the info. I'll just have to assume since the guy has sold quite a few of these china batteries that none have blown up yet or else it would have been reported on eBay.
Sent from my Nexus 7 using Tapatalk 2

I am using the extended battery and nothing wrong with it haven't had any problems yet and its been 4 months
Sent from my Galaxy Nexus using xda app-developers app

Related

OEM 1750mah extra battery/charger

Well I was looking for spare batteries and came across these. I ordered a pair and will get them sometime this week. I decided to share the link if anyone is looking for spare battery with a charging station for the battery. For me this should be fine since I can usually get through the day with a full charge and on certain occasions a small charge when I play some games and having a spare would be great. At this good price
http://item.mobileweb.ebay.com/viewitem?itemId=150847911009&index=0&nav=WATCHING&nid=47731270809
Edit: the batteries don't seem to be OEM and overheat my phone. Im not sure of any long term effect this may on our phones, but I personally won't take this risk.
Sent from my Galaxy Nexus using xda premium
unlvmike said:
Well I was looking for spare batteries and came across these. I ordered a pair and will get them sometime this week. I decided to share the link if anyone is looking for spare battery with a charging station for the battery. For me this should be fine since I can usually get through the day with a full charge and on certain occasions a small charge when I play some games and having a spare would be great. At this good price
http://item.mobileweb.ebay.com/viewitem?itemId=150847911009&index=0&nav=WATCHING&nid=47731270809
Sent from my Galaxy Nexus using xda premium
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Can that really be OEM at that price? Let us know when you get it.
mrsbelpit said:
Can that really be OEM at that price? Let us know when you get it.
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Yeah I was a bit skeptical at first, but worst case scenario its only $13. I'll update when they arrive
Sent from my Galaxy Nexus using xda premium
it's probably a china battery. I have the same brand charger for my G2 and I keep my oem battery in it just incase. That battery probably won't have nfc, but it should serve well as a back up.
unlvmike said:
Well I was looking for spare batteries and came across these. I ordered a pair and will get them sometime this week. I decided to share the link if anyone is looking for spare battery with a charging station for the battery. For me this should be fine since I can usually get through the day with a full charge and on certain occasions a small charge when I play some games and having a spare would be great. At this good price
http://item.mobileweb.ebay.com/viewitem?itemId=150847911009&index=0&nav=WATCHING&nid=47731270809
Sent from my Galaxy Nexus using xda premium
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You need to check if the battery is fake. I got 2 with the charger from ebay for 18.99. First sign that it was fake was the NFC didn't work even though the sticker says Near Field Communication on it. You can also check the voltage with AndroSensor from the play store. The real battery puts out 3.716 volts where as the fake one puts out 3.8 somethng. Im not sure if it is even safe to use . I was looking for info on it when I found this post.I found that in china they sell the blank batteries that are identical shape and size to the real batteries and will even put the stickers on for you... Im pretty sure yours is fake too from the price. Samsung sells these batteries for $30+
Edit- if it does turn out to be fake you should change the name of the post to fake OEM batteries. My seller was Feng4258 located in china and he had a pretty good rating like 98%. The 2% were accusing him of selling fake or defective batteries. I wish I would have checked that before I bought. I'm requesting a refund now and if he doesn't comply I'm going to be opening a case with PayPal and ebay.
PROlific666 said:
You need to check if the battery is fake. I got 2 with the charger from ebay for 18.99. First sign that it was fake was the NFC didn't work even though the sticker says Near Field Communication on it. You can also check the voltage with AndroSensor from the play store. The real battery puts out 3.716 volts where as the fake one puts out 3.8 somethng. Im not sure if it is even safe to use . I was looking for info on it when I found this post.I found that in china they sell the blank batteries that are identical shape and size to the real batteries and will even put the stickers on for you... Im pretty sure yours is fake too from the price. Samsung sells these batteries for $30+
Edit- if it does turn out to be fake you should change the name of the post to fake OEM batteries. My seller was Feng4258 located in china and he had a pretty good rating like 98%. The 2% were accusing him of selling fake or defective batteries. I wish I would have checked that before I bought. I'm requesting a refund now and if he doesn't comply I'm going to be opening a case with PayPal and ebay.
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Thanks for the input, well if NFC doesn't work then that's not a huge loss for me as it is still pretty useful for me at least. I'll be sure to check the voltage and how good it performs.
Sent from my Galaxy Nexus using xda premium
Update: yeah turns out that you were right. The batteries do hold a voltage well over 3.7. I just contacted the seller about this issue and hope to get a refund or will have to contact eBay. Thanks again for your input.
Sent from my Galaxy Nexus using xda premium
PROlific666 said:
You need to check if the battery is fake. I got 2 with the charger from ebay for 18.99. First sign that it was fake was the NFC didn't work even though the sticker says Near Field Communication on it. You can also check the voltage with AndroSensor from the play store. The real battery puts out 3.716 volts where as the fake one puts out 3.8 somethng. Im not sure if it is even safe to use . I was looking for info on it when I found this post.I found that in china they sell the blank batteries that are identical shape and size to the real batteries and will even put the stickers on for you... Im pretty sure yours is fake too from the price. Samsung sells these batteries for $30+
Edit- if it does turn out to be fake you should change the name of the post to fake OEM batteries. My seller was Feng4258 located in china and he had a pretty good rating like 98%. The 2% were accusing him of selling fake or defective batteries. I wish I would have checked that before I bought. I'm requesting a refund now and if he doesn't comply I'm going to be opening a case with PayPal and ebay.
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Click to collapse
Is there a condition that the battery has to be in in order to measure the voltage? My understanding is that the battery voltage is not a constant property of the battery but changes depending on it's state of charge (ie fully charged, half charged, completely drained, etc). If that is the case I don't think you can "spot" a fake battery by voltage.
Is it useful?
0micron said:
Is there a condition that the battery has to be in in order to measure the voltage? My understanding is that the battery voltage is not a constant property of the battery but changes depending on it's state of charge (ie fully charged, half charged, completely drained, etc). If that is the case I don't think you can "spot" a fake battery by voltage.
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Yeah I'm going to have to keep doing some more research when I get home because I noticed that my original battery on occasions rises well above the 3.7V. The batteries do work though. Hold a fairly same charge that I've noticed
Sent from my Galaxy Nexus using xda premium
With my stock battery, andro sensor says im running at 3.86 volts?
Sent from my Galaxy Nexus using xda app-developers app
Yes you are correct at the time my original battery what showing 3.7 and the fake was showing 3.8 but from what I've read its just a matter of charge level. The batteries work fine and in my experience are safe to use. With that said they are not OEM and really the only way to tell is to check the NFC. Also if they come in anything other than a Samsung case then they are probably fake. I told my seller I was going to open a close with eBay and PayPal to gt my money back and he sent a message back the next day saying "Very sorry, seller very misleading. Money back in account, check please!" I tried calling Samsung before just to make sure but they can't tell a fake from the s/n. If the NFC feature isn't present its a fake. Contact your seller immediately and demand a refund. Enjoy your free fake batteries. The charge holds alright but it does suck their isn't any NFC especially since Google wallet has started to support all major credit cards.
Sent from my Nexus 7 using Tapatalk 2
Toad858 said:
With my stock battery, andro sensor says im running at 3.86 volts?
Sent from my Galaxy Nexus using xda app-developers app
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Is this with the battery fully charged or half way? All lithium batteries fully charge around 4.2v, for phones I assume they will fully charge around 4.1v or so.
3.7v is just the voltage that is recommended for long term storing of the battery to prevent wear.
Yeah I personally would not recommend these batteries. They have started to overheat my phone and the voltage never gets below 3.86. I don't really use NFC so I can't really say if that works or not.
Sent from my Galaxy Nexus using xda premium
Yea i been noticing that the higher the battery level the higher the voltage, and it goes down as the battery level goes down. So im not so sure about the voltage being an indicator. NFC is the only way to tell. I just bought a battery from a seller in south korea and its real, nfc works and all. The label and writing looks abit different though, im assuming its because its a korean made battery not made in korea and finished in china
Sent from my Galaxy Nexus using xda app-developers app

Feipusi Battery

http://www.ebay.com/itm/2300mAh-BH6...ccessories&hash=item5d3082096d#ht_6684wt_1037
Anyone have tried these out? Seems like a good deal for a 2300 mah. Compared to ecell for example.
Yes i have 1. Pretty good. Lives a little longer than the 1800mah
Sent from my MB860 using Tapatalk
rapidmancy said:
Yes i have 1. Pretty good. Lives a little longer than the 1800mah
Sent from my MB860 using Tapatalk
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Will these batteries work with the regular battery cover of the Atrix 4G or does it require a new cover like the mugen ones. If it needs a new cover thumbs down! If not I might buy 1
Let me know !
Also do you have any issues with the 2300mah battery's stats not reading correctly....I read that 2000mah is the maximum in which the phones hardware can read. If your 2300mah is reading correctly that's interesting.
I used these - very bad.
My atrix was not able to get actual charge state. Could see 100% and then suddenly fall to 0% and phone switches off. Or can see 5% for hours after full night charge.
Bad stuff
Sent from my MB860 using xda app-developers app

Chichitec 2500mah extended battery

What's up everybody, I just ordered these & hoping they'll do the job. I've ordered from them twice before (nexus one, evo 3d), the batteries in the past have held up pretty good but I don't think these have nfc :/ I ended up ordering these cuz' the qcell nfc enabled ones were sold out/unavailable so I didn't wanna' wait, plus I haven't seen a review on these yet so I said eh, I'll try em' out. If you guys are interested in purchasing some for yourselves I've included the link below, the only thing is that you have to pay using google checkout :/
http://www.htcexpress.com/samsung-b...-t-mobile-t999-att-i747-us-cellular-r530.html
DOG666 said:
What's up everybody, I just ordered these & hoping they'll do the job. I've ordered from them twice before (nexus one, evo 3d), the batteries in the past have held up pretty good but I don't think these have nfc :/ I ended up ordering these cuz' the qcell nfc enabled ones were sold out/unavailable so I didn't wanna' wait, plus I haven't seen a review on these yet so I said eh, I'll try em' out. If you guys are interested in purchasing some for yourselves I've included the link below, the only thing is that you have to pay using google checkout :/
http://www.htcexpress.com/samsung-b...-t-mobile-t999-att-i747-us-cellular-r530.html
Click to expand...
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Hope it offers that extra 19%. If so, I might get myself one too.
art0605 said:
Hope it offers that extra 19%. If so, I might get myself one too.
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Click to collapse
Once I get them I'll update this post with info/screen shots about battery performance
Sent from my SGH-T999 using xda premium
another 3.7v batter that will die very fast if you use your phone to charge, due to overcharging. as our stock batteries full charge voltage is 4.3 where as that one is 4.2v
unless somehow our phones can distinguish the battery difference,
devilchrist said:
another 3.7v batter that will die very fast if you use your phone to charge, due to overcharging. as our stock batteries full charge voltage is 4.3 where as that one is 4.2v
unless somehow our phones can distinguish the battery difference,
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I always use the supplied wall charger that comes with these so Idk, lots of the extended battery reviews on here are the same voltage & they seem to be doing pretty good.
It's not the charger which matters but the phone itself which charges the battery, it's aiming for 4.3V as that's what it thinks it should have as the stock battery is designed for that. Although I haven't heard a single case of these 4.2V batteries having problems with being charged with 4.3V, that last part can be changed in the kernel and the charger chip driver. I'm getting some knock-off cheap battery myself so I'll see how it goes. This particular one seems quite steep in price @ $30, with proven ones like the PolarCell 2400mAh going out for half the cost.
you won't see the affect right away from overcharging. I use to play with a lot of batteries from RC, overcharging something we use to do get slight edge and boost at start. but it does have long term damage to batteries, specially lithium based. some cheaper batteries even catch fire.
Alright guys, got the batteries in the mail today, charging one & will report back later
Sent from my SGH-T999 using xda premium
DOG666 said:
Alright guys, got the batteries in the mail today, charging one & will report back later
Sent from my SGH-T999 using xda premium
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Whoop whoop!
And now we wait..
Sent from my SAMSUNG-SGH-I747 using Tapatalk 2
Well here's a couple quick pics, batteries seem to be doing pretty good, this is with some moderate use. I'll continue to drain them & recharge so I can calibrate em'
Sent from my SGH-T999 using xda premium
devilchrist said:
another 3.7v batter that will die very fast if you use your phone to charge, due to overcharging. as our stock batteries full charge voltage is 4.3 where as that one is 4.2v
unless somehow our phones can distinguish the battery difference,
Click to expand...
Click to collapse
Li-ion batteries have an overcharge protection circuit built into the battery pack itself and should prevent this from happening. If everything is working as intended, it should be impossible for the phone to overcharge a battery. That's not to say the protection circuit couldn't fail itself.
And I too played with RC batteries and you really can't compare those batteries with these. Different types of battery with different methods of charging.
It just keeps getting better & better
Sent from my SGH-T999 using xda premium
Can you post the screen on time?
Send from my GT-I9300 with Tapatalk
I couldn't wait for more info on this battery, so I picked up two on amazon.com for a little bit less.
how's the thickness/back plate?
Sent from my SPH-L710 using xda app-developers app
tkbredx said:
how's the thickness/back plate?
Sent from my SPH-L710 using xda app-developers app
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Based off of Amazon, these batteries are the same size as the stock battery.
From Amazon's Description: "Standard Size Do not need to change bulky back cover, increase battery life"
DOG666 said:
It just keeps getting better & better
Sent from my SGH-T999 using xda premium
Click to expand...
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Any updates regarding your experience with these batteries? I used to own this brand for my HTC Sensation and was very pleased with it. Almost had about 400+ recharge cycles before the battery started to wear out. Looking forward on your feedback!
manoei said:
Any updates regarding your experience with these batteries? I used to own this brand for my HTC Sensation and was very pleased with it. Almost had about 400+ recharge cycles before the battery started to wear out. Looking forward on your feedback!
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damn- not deliverable to my area thru Amazon
Am tempted by the 3000Mah battery by E-Cell....
http://www.ebay.co.uk/itm/GOLD-3000...ultDomain_3&hash=item3f1b24bf0b#ht_2324wt_962
Purchased a 2100mah previously to replace the 1450mah that was in my Sony Xperia Play.... Definately added a few more hours of play to it..... Hmmmm....

ZeroLemon 2300mAh battery-HIGHEST CAPACITY SLIM BATTERY IN THE WORLD-CBA test~2400mah

Looks like ZeroLemon also have a slim battery for Galaxy S3 at rated 2300mAh. Given my experience with their 6300mAh capacity battery being more than they claim, these 2300mAh maybe more than 2300mAh :fingers-crossed: Anyone tried this yet? I'm going to jump on this for daily use and have the extended battery for weekend use if this turns out good:good:
http://www.amazon.com/gp/product/B00B0IS6MU
frypan said:
Looks like ZeroLemon also have a slim battery for Galaxy S3 at rated 2300mAh. Given my experience with their 6300mAh capacity battery being more than they claim, these 2300mAh maybe more than 2300mAh :fingers-crossed: Anyone tried this yet? I'm going to jump on this for daily use and have the extended battery for weekend use if this turns out good:good:
http://www.amazon.com/gp/product/B00B0IS6MU
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I have the 4500mAh battery and am VERY happy with it. I am not impressed by advertising that says "Highest capacity slim profile battery". That may be so, but you can only get so much power from a slim line battery. I thought I would never go to a battery that would require changing the size of my phone by putting on a different battery cover, BUT I'm glad I did.
The 4500mHh battery has been well worth it, IMHO. Got it from Gorilla gadgets, BTW.
Looks like it doesn't support NFC. I know that's a deal breaker for some.
I wouldn't trust anyone but Samsung to build a battery that fits under our stock battery cover that provides anything more than we already get.
Re: ZeroLemon 2300mAh battery - Largest Capacity Slim Battery in the world?
ISNT SAMSUNG COMING OUT OR DID COME OUT WITH THERE OWN EXTENDED BATTERY ALREADY ?
Sent From My Samsung Galaxy S3
otterboxfan4l said:
ISNT SAMSUNG COMING OUT OR DID COME OUT WITH THERE OWN EXTENDED BATTERY ALREADY ?
Sent From My Samsung Galaxy S3
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They are, it's in the accessories forum here somewhere. Not sure where though?
otterboxfan4l said:
ISNT SAMSUNG COMING OUT OR DID COME OUT WITH THERE OWN EXTENDED BATTERY ALREADY ?
Sent From My Samsung Galaxy S3
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I read a bunch of posts that said they were coming out with one.... It has been weeks though. I wish they could make a standard fit battery that pushes 3000-3300MAH like a droid MAXX battery.
You can try the polarcell which is rated at 2400mah and has the same size like stock.
Anyone tried these and have some results
Sent from my SAMSUNG-SGH-I747 using xda app-developers app
Man i want to see results.. Have been looking at these last couple of days on amazon. But not much info
Sent from my Galaxy S3 using neighbors wifi
frypan said:
Just try them. Amazon has 30 days full refund policy. Can't go wrong with that
Click to expand...
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Share your thoughts on it? Does it outlast the factory batt? You did buy it right? Lol.
Sent from my Galaxy S3 using neighbors wifi
Just bought one, will compare to anker/stock and give a review when I get it
Sent from my SPH-L710 using xda app-developers app
Just ordered the set myself. Is there instructions for the first use? Fully Charge at first or something?
Sent from my Galaxy S3 using neighbors wifi
Yes the instructions say charge for 12 hours before use and they have a break in of 5-6 charges for full battery life. Also they have NFC enabled crossed of in black sharpie on them the charger feels a little cheap too and flickers when you have your phone on the USB port while charging one oft the batteries. How they expect us to charge them both for 12 hours is odd the one I put in my phone charged much quicker than that and leaving it on longer is pointless as when they hit full safe chargers stop charging the batteries.
Battery 1 finished in 10 hours on the charger battery 2 finished in 2 hours in phone on stock charger stock battery is in charger now.
Charger had the following colors for led
Blue- no battery powered
Pink-battery charging
Purple- battery done
Also while charging and using the USB port is possible the charger led flickers when doing so. I don't believe it has enough amps to power both unfortunately. None of the batteries got warm at all while charging.
As for NFC Samsung should have never put it in the battery to begin with I'm thinking about getting a galaxy note 2 back pulling the NFC ant out of it and putting it in my s3 as they put the contacts for wireless charging and NFC external ant in our phones.
mirrin said:
Yes the instructions say charge for 12 hours before use and they have a break in of 5-6 charges for full battery life. Also they have NFC enabled crossed of in black sharpie on them the charger feels a little cheap too and flickers when you have your phone on the USB port while charging one oft the batteries. How they expect us to charge them both for 12 hours is odd the one I put in my phone charged much quicker than that and leaving it on longer is pointless as when they hit full safe chargers stop charging the batteries.
Battery 1 finished in 10 hours on the charger battery 2 finished in 2 hours in phone on stock charger stock battery is in charger now.
Charger had the following colors for led
Blue- no battery powered
Pink-battery charging
Purple- battery done
Also while charging and using the USB port is possible the charger led flickers when doing so. I don't believe it has enough amps to power both unfortunately. None of the batteries got warm at all while charging.
As for NFC Samsung should have never put it in the battery to begin with I'm thinking about getting a galaxy note 2 back pulling the NFC ant out of it and putting it in my s3 as they put the contacts for wireless charging and NFC external ant in our phones.
Click to expand...
Click to collapse
Hows the performance of the batteries vs stock?
Sent from my Galaxy S3 using neighbors wifi
Not sure yet just got them today and they just finished charging for the first time. After I use them for a couple days I'll post here. Overall they seem just as well made as the stock battery perhaps a bit heavier but I would need a very accurate scale to find out just how many grams they are.
mirrin said:
Not sure yet just got them today and they just finished charging for the first time. After I use them for a couple days I'll post here. Overall they seem just as well made as the stock battery perhaps a bit heavier but I would need a very accurate scale to find out just how many grams they are.
Click to expand...
Click to collapse
Kool. I should get mine today as well.
Sent from my Galaxy S3 using neighbors wifi
I'm using a 3200 that fits with the regular s3 back. Got it off of flea bay and it has NFC, it was $45 & some change. Using my ballistic brand case.
Pic
westhillsat said:
Pic
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How much screen time?
Sent from my Galaxy S3 using neighbors wifi

Battery mod lol

ok guys you can laugh as much as you want but i did it lol . i used to have the nexus that google used to sell which was a great phone i had 2 backup batteries for the phone . i was looking at my note two and note 3 and was looking at the difference in battery in each one and found a way to run the nexus battery on the note 2 and the note 3 lol it looks ghetto but works and i never have to run to charger. look at the pics
you can see the size difference in the battery size is major but the battery for the nexus does last pretty damn good for some reason. on the nexus battery on the side where the metal connections are i shaved off the tabs on that side look at pics lol
R.I.P batteries or Note 3. :| Lol.
Exel said:
R.I.P batteries or Note 3. :| Lol.
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Well the battery from the nexus was just sitting in my desk not being used being that ibsold the nexus . So I was like wait will this work in my note 2 and 3 it did. Very little mods needed yo be done other then shaving a peace of wood or plastic to hold the battery in place and shaving the tabs on one side off so it would sit flush against the pins .
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What capacity is the spare battery
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Its a 1750mAh
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MERK77 said:
Its a 1750mAh
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Half the capacity and an older battery lasting longer ..........
Sent from my GT-N8013 using Tapatalk 4
Its def lasting atleast half the day and I was suprised when it did .
Sent from my GT-N7105 using XDA Premium 4 mobile app
I commend you for the idea here but I think we would like to see a screenshot of the battery usage stats.
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aalupatti said:
Half the capacity and an older battery lasting longer ..........
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Click to collapse
Sure do you recommend a program to mesure how the battery performs.
Sent from my GT-N7105 using XDA Premium 4 mobile app
Ghetto fabulous.
Sent from my SM-900T.
I modified mine to run off of 3 AAA duracell batteries. Back cover bulges out though... maybe ill try this instead
Sent from my SM-N900T using xda app-developers app
It might run okay for now, but in the end you'll blow up the battery and make the phone unstable. The GN3 battery is 3.8V while the GNex battery is 3.7V. Yes, that 0.1V makes a difference - the phone will charge the GNex battery with a too high voltage which can cause it to overheat and swell. The phone running off 3.7V will be underpowered and might or might not randomly crash.
This thread scares me....
Sent from my SM-N900T using XDA Premium 4 mobile app
siraltus said:
It might run okay for now, but in the end you'll blow up the battery and make the phone unstable. The GN3 battery is 3.8V while the GNex battery is 3.7V. Yes, that 0.1V makes a difference - the phone will charge the GNex battery with a too high voltage which can cause it to overheat and swell. The phone running off 3.7V will be underpowered and might or might not randomly crash.
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It's not that big of a deal. Lithium batteries have an upper limit of 4.2 Volts which is why if you use a general purpose charger such as those used for charging RC packs you can charge Li-Ion and Li-Po batteries both on the same setting. Either way it charges them up to 4.2V and then cuts off. Once a load is applied, the battery drops to its nominal voltage - 3.7 or 3.8V and remains at that level for most of its life before rapidly dropping off when it gets low. When this happens cut-off circuitry kicks in around 3.2V or so to prevent the battery from discharging too much which will permanently damage it. Since the battery can't be safely charged above 4.2 or let drop below 3.2 or so, all the charging and discharging is managed by a chip designed for that purpose. Also, it means that you can't overcharge your battery by leaving your phone plugged in 24/7 as the charging chip will stop charging when it reaches that upper limit.
CalcProgrammer1 said:
It's not that big of a deal. Lithium batteries have an upper limit of 4.2 Volts which is why if you use a general purpose charger such as those used for charging RC packs you can charge Li-Ion and Li-Po batteries both on the same setting. Either way it charges them up to 4.2V and then cuts off.
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Lithium ion batteries with a nominal 3.7 voltage should be charged to 4.20 V or so.
Lithium ion batteries with a nominal 3.8 voltage are typically charged to 4.30 or 4.35 V. It's a new type of lithium ion battery with different chemistry, and hence the different voltages. If you take a battery meant to be charged to 4.20 V and repeatedly charge it to 4.35 V, its cycle life will be significantly reduced. 0.1 V difference will reduce the cycle life by something on the order of 50%. Here is a reference: http://batteryuniversity.com/learn/article/how_to_prolong_lithium_based_batteries
Apple, Samsung, and Motorola seem to be using this new type of battery, and the phones are charging them to 4.30 or 4.35 V. I'm not sure how widespread the technology is or if it has trickled into aftermarket battery offerings.
I commend you for your work and glad your getting more battery life with this mod but I'm sure most of us are fine with the life of the phone stock gives us without any modifications or just wait til zero lemon releases their behemoth 10k mah battery with zero shock case to protect the phone.
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awesome. this means i will probably be able to stick 4pin samsung batteries in my note2. must be sure the 3 pins on the note2 correctly connect pos and neg with the plates on the 4-pin batteries. in a few years the note2 replacement batteries on ebay will have shorter lifespan due to storage in the warehouse. instead i may purchase a battery for a then current model (such as galaxy s6 battery) and stick that that in my note2.
Lithium ion batteries with a nominal 3.7 voltage should be charged to 4.20 V or so.
Lithium ion batteries with a nominal 3.8 voltage are typically charged to 4.30 or 4.35 V. It's a new type of lithium ion battery with different chemistry, and hence the different voltages. If you take a battery meant to be charged to 4.20 V and repeatedly charge it to 4.35 V, its cycle life will be significantly reduced. 0.1 V difference will reduce the cycle life by something on the order of 50%. Here is a reference: http://batteryuniversity.com/learn/article/how_to_prolong_lithium_based_batteries
Apple, Samsung, and Motorola seem to be using this new type of battery, and the phones are charging them to 4.30 or 4.35 V. I'm not sure how widespread the technology is or if it has trickled into aftermarket battery offerings.
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But with this new 'smart battery' and 'smart charger' system it seems very likely that the battery's capabilities are read by the charger so that the charger will not cause damage. It might be that the charger will adjust the charging protocol if it can support the battery's needs, or perhaps refuse to charge an unsupported battery. I think if he measures the charging voltage he might find that it is different for the two batteries.
Frank
Thanks to this, I will have more battery life. Cheers! Just kidding!
Thanks
....au milieu de nul part....

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