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Buy yourself a cheaper battery: using lower amp batteries with the Nexus S

I have always thought that the amperage of a battery made no difference to the voltage due to the factory adjusting the internal resistance of the battery. Amperage I understood was measured in current, however, which does have an effect on overall voltage.
Recall:
V = I * R
With electronics, it is my understanding that the mAh battery doesn't matter as long as the voltage is the same, although you'd get less longevity out of a 1650 mAh vs a 1440 mAh.
Thus, I believe this battery would work. Thoughts? The part number matches exactly what was in my Nexus S and the batteries look identical. If this is the case, save yourself some money buy not searching Nexus S battery and instead searching ab653850ca in eBay instead of paying $30-$40 for a new/replacement Nexus S battery when they are the same thing.
http://cgi.ebay.com/NEW-OEM-SAMSUNG...Accessories&hash=item3a5dd479e2#ht_1287wt_900
Thoughts? Both are 3.7 volts.

mAh is a unit of electric charge, not current (notice the 'h' making it milli-Ampere-hour). So, yes, a lower mAh battery will definitely work, but it will last less time.
Also (just trying to explain better) a battery is not a "powered resistor", so the relationship between its voltage and its current is not just ohm's law (the one you recall). More specifically, the 3.7 volts is due to the chemical reaction inside the battery and is more or less fixed (although it decreases as the battery discharges). The current flowing is basically a function of the load of the battery, so it changes according to what parts of the phone are working at that moment. The output resistance of the battery is a formal way of describing how close the battery is to an ideal voltage source and is not related to the amount of current it's actually providing.
Sorry if I was not clear enough, it's late here!

Missed the h. Not sure why, I see mA all the time and I just missed the h. Interesting and helpful. Thanks man. Clear to me.

That's strange, if it is the same model (AB653850CA), why is it only 1440mAh? But I'm sure it will work.

All I know is that this Samsung Moment battery I got off of Amazon for $6 is almost as good as my stock battery.
Sent from my Nexus S using XDA Premium App

The 1440mAh batteries work perfect, I have 2 of them. While you are at it, buy a wall charger to charge them in so they will charge to 100%. Having 2 spares means you will always have a FULLY charged battery to pop in and never have to tether the phone to a charger. Plus you get 2 to 4 extra hours of use.

Very informative!

turbodroid said:
Plus you get 2 to 4 extra hours of use.
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What do you mean by that ? That the 1440 mAh battery only gives you 2-4 hours ? I doubt it lasts so little time. I hope it doesn't.

No he means charging the batteries in an external charger gives them a more complete charge as I find the same thing. I've got 2 genuine batteries and a third on the way and the external charger charges them to 100% whereas the phone only charges them to around 95%. The batteries charged in the external charger last longer than those charged in the phone.

Hard to know when you're legitimately getting a battery with "more capacity" though, so I just assume I'm always buying another stock battery anyways.

maltloaf said:
No he means charging the batteries in an external charger gives them a more complete charge as I find the same thing. I've got 2 genuine batteries and a third on the way and the external charger charges them to 100% whereas the phone only charges them to around 95%. The batteries charged in the external charger last longer than those charged in the phone.
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Oh, I got it, thanks !
Anyway, for 6$, I think I'm going to buy one, too. Coupled with the 2nd battery dock, it should work flawlessly.

Hey guys,
I went ahead and ordered one of these too. I noticed that the Watts/hour is 5.55 on the Nexus S battery but on the battery I ordered (but have yet to get in) it says 5.3. Is this going to make a difference outside of how long the battery lasts?
If you guys buy one of these 1440s report back with what you've found out.
And if this is a success, then please urge XDA to sticky this thread or put this on the main page. Paying $50 for a second/replacement Nexus S battery is outrageous, and if this saves my fellow XDA members $45, more people should know about this. :]
UPDATE:
Looks like turbodroid already ordered these and said they work great! Thanks guys! Thank me if this was helpful.

Is it harnful to battery to keep phone plugged in when at home?

My battery for my pnone (Incredible S) runs out too quickly for my liking. I was looking into getting an external battery charger for it (the one that plugs into wall and charges the battery by itself) But they are all from hong kong and I heard bad things about it..Like the risk involved. I was wondering if when Im at home can I plug my phone in to usb via computer and it not have any consequences. That way there I can save some battery for when Im out??? Anyone???

Depends what you mean by 'harmful'... in an ideal world you wouldn't charge the battery while the phone is on, because the battery will get a bit hotter while it is both charging and in use by the phone. Heat isn't great for batteries - it reduces their life span and eventually the amount of charge it can hold. However, as to whether this is significant or not... I'd say not. I had an HTC Hero for 18 months and left that on charge for significant amounts of time while it was on, and even by the end of that time its battery life wasn't reduced very much.
So, in short, I wouldn't worry about it!

Ok thanks... I love my phone except for the battery. And there is no way i am risking buying those hong kong battery charger knockoffs
Sent from my HTC Incredible S using XDA Premium App

All smartphones have the same problem, more or less. Battery tech hasn't kept pace with computing power demands. We're pretty much stuck with it until phone makers decide to ship bigger batteries as standard or someone invents the next major improvement in battery technology... Either way, it'll be a while!

Yeah true. Thanks for replying
Sent from my HTC Incredible S using XDA Premium App

Universal Phone Battery Charger, are they safe?

I am just wondering if any of you have used the Universal Phone Battery Charger such as this one http://www.ebay.co.uk/itm/BRAND-NEW...y_Chargers&hash=item4cfa8ab2cd#ht_3307wt_1033
If so are they safe to use? have they been approved by the ITU.
Thanks.

I've been using a universal charger for about a month. Not that exact model. I wanted to buy it locally and radio shack was the only retailer I could find that sold one. I have no complaints other then my phone is out of commission when charging. Ive had no I'll effects so far. I'm sure its a placebo but my battery life seems a bit better. I usually would get the 99-90% without even touching my phone. I haven't really seen that with the universal.
Sent from my ADR6300 using xda premium

Any decent custom ROM will allow you to control charging voltage, so it really doesn't matter. I use any charger i can get my hands on most times, and my GS2 charges fine.

Just to let u know mate that 99-90% battery or maybe a bit less is a good thing that your phone is suppose to do because it's not good for your battery to be at full battery or low battery so the phone does it on purpose. I'm using a external charger and mine still does it. They say your suppose to try and keep your battery between 40 and 80% but won't hurt to fully charge it's as long as it not fully charged for to long and you don't want a low battery full to long but you still wanna let your phone fully die every so often and fully recharge as it reconditions battery ( this is what I've read) and if your going to store a device turned off for a long time u only want about 40-60% battery. Jus thought I'd say lol

As far I know they are not safe. These charger reduce the longevity of the battery.

You'd better use the original charger. The universal charger will short the battery life and have bad impact on your phone. Most important of all, they are not safety.

Jasmine1012 said:
You'd better use the original charger. The universal charger will short the battery life and have bad impact on your phone. Most important of all, they are not safety.
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Do you have evidence of this?
I use a universal charger on all my devices and never once had any battery issue with any of them.

i've used a battery charger on a old sony ericsson and it messed up its charge time, now it takes double to charge but it still holds....weird...

orangekid said:
Do you have evidence of this?
I use a universal charger on all my devices and never once had any battery issue with any of them.
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I just see some reports talking about we should not using the universal chargers. And also some people said Universal chargers are OK if you are using them on a temporary basis. But using for long term, they may cause more problems than the original one.

The worst thing about nexus phones thats never reported.

Okay I have a nexus S and the single most annoying thing about it is the time it takes to charge. It takes 2.5 hours to charge a 1500mah battery whereas this xperia arc S with the same battery capacity charges completely in less than an hour using the exact same charger on both phones. So obviously the nexus S has some cost cutting that it charges so slowly and yet it was never mentioned in any of the reviews.
Now at first I was ok with it but I got to use the arc S for a few days. Its like it changes everything when the phone charges in one third the time, you could care less if you get 30 min less screen on time or whatever. I just go charge the phone while going for a shower and bam its fully charged when I come back.
So upon investigation it seems like an issue with samsung phones. The galaxy S, galaxy S2 and galaxy nexus all take ridiculous amount of time to charge. So why is this never reported? Higher screen on time is no good if the charging time is so bad. My nexus S can go days without a full charge and really the only way to do it is over night.
Anyways this is LG nexus now so I was hopeful this problem wont be there. I checked out a friends optimus 2X and I was happy to see that just like the xperia it also charges in under an hour. However anandtech review says it takes 3 hours to charge and so does another user in the Q&A forum. So why on earth is not anyone complaining about it? Everyone is after the screen on time but you realize this is an even bigger issue?
And btw the iphone charges very quickly as well. And yes I realise that the nexus 4 has a 2100mah battery but it really doesnt justify the time it takes. This is almost a deal breaker for me. *sobs*

When I got my S2, I was disappointed with the charging time. But many custom kernals support fast charging by increasing the voltage level going to the charge circuit. With a tweak, my phone charged up in about 90 minutes.
But over time, you learn that the higher voltage has a detrimental effect on the total charge the battery will accept. In other words, when charging at a slower pace (lower voltage) the battery will actually absorb a higher density charge - making your battery last longer. After discovering this, I turned down the charge voltage on my S2 in favor of getting better battery life.
So I would avoid comparing the charge times with other phones. They may charge faster, but that's done by increasing the charge voltage, thus reducing battery capacity.
I have no reason to believe the increased voltage alters the total life of the battery, it just seems to affect the amount of energy the battery will absorb on a single charge.
tl;dr; The faster the battery charges, the shorter the battery life. I learned that from Upstairs Hollywood Battery School.

Seriously? Morning about charging time? GTFO!
Sent from my EndeavorU using xda premium

This isn't really a problem, it's just the way it is with all phones that use a large battery (ie. virtually all high end smartphones). The chargers are all 1A, so with a huge battery it will take ages to charge.
Efficiency is the bigger issue. The iPhone 4S/5 are pretty much the only phones to date that I've been able to charge at a decent pace off my computer's USB ports. I definitely need to buy more chargers and cables for my Nexus 4 but that's no big deal.

Dr Zoidberg said:
When I got my S2, I was disappointed with the charging time. But many custom kernals support fast charging by increasing the voltage level going to the charge circuit. With a tweak, my phone charged up in about 90 minutes.
But over time, you learn that the higher voltage has a detrimental effect on the total charge the battery will accept. In other words, when charging at a slower pace (lower voltage) the battery will actually absorb a higher density charge - making your battery last longer. After discovering this, I turned down the charge voltage on my S2 in favor of getting better battery life.
So I would avoid comparing the charge times with other phones. They may charge faster, but that's done by increasing the charge voltage, thus reducing battery capacity.
I have no reason to believe the increased voltage afters the total life of the battery, it just seems to affect the amount of energy the battery will absorb on a single charge.
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Its not a big deal as I said I have used an xperia arc S and I was satisfied with battery life, I cant imagine the xperia would have had much better battery life out of its 1500mah unit even if it was slow charging.
I mean unless we can observe what happens to the battery life of a fast charging phone by slowing its speed, we cant really conclude this since after all it was a "mod" applied on the S2.

twistedh said:
Seriously? Morning about charging time? GTFO!
Sent from my EndeavorU using xda premium
Click to expand...
Click to collapse
Nobody asked you to post in the thread, charging time is a big deal its silly to think otherwise.

lambomanx1 said:
This isn't really a problem, it's just the way it is with all phones that use a large battery (ie. virtually all high end smartphones). The chargers are all 1A, so with a huge battery it will take ages to charge.
Efficiency is the bigger issue. The iPhone 4S/5 are pretty much the only phones to date that I've been able to charge at a decent pace off my computer's USB ports. I definitely need to buy more chargers and cables for my Nexus 4 but that's no big deal.
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Click to collapse
This isnt true the HTC one X and sony xperia S charge very quickly and they have relatively big batteries.

Seriously, there's a big difference between a 1500mah battery and a 2100mah. Being that this is a lithium polymer battery it should charge a little faster. Also, like the above poster stated, slower charge is a higher density charge and better for battery longevity. I think if Samsung wanted faster charging they would have it. There is no physical barrier.

You guys know the faster your battery charges, the shorter the lifespan of the battery?
Head over to battery university
Sent from my Nexus 7 using xda app-developers app

Jayrod1980 said:
Seriously, there's a big difference between a 1500mah battery and a 2100mah. Being that this is a lithium polymer battery it should charge a little faster. Also, like the above poster stated, slower charge is a higher density charge and better for battery longevity. I think if Samsung wanted faster charging they would have it. There is no physical barrier.
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Its like 40% difference?
And isnt the nexus 4 hmm not having the best battery life despite such slow charging so I dont really feel it makes a big difference.
And btw sometimes it is a hardware limitation, nobody has been able to charge a nexus S faster not with kernels or other chargers.

tylerwatt12 said:
You guys know the faster your battery charges, the shorter the lifespan of the battery?
Head over to battery university
Sent from my Nexus 7 using xda app-developers app
Click to expand...
Click to collapse
Yes, I know that. See post #2 in this thread.
I will edit my post to add a tl;dr

tylerwatt12 said:
You guys know the faster your battery charges, the shorter the lifespan of the battery?
Head over to battery university
Sent from my Nexus 7 using xda app-developers app
Click to expand...
Click to collapse
It doesnt seem like a big deal, the iphone has had fast charging since the first one and its battery lasts just fine. Ofcourse one day you will have to change it but why suffer for a year just because of it?

Another one of these threads... Oh brother.
sent via xda premium with nexus 7

I always wondered why the iPhone charged so much faster than any android phone I owned

I'm saying there's no technological barrier to the Nexus S charging faster. Samsung just made it that way. Could also be because it uses a Lithium Ion battery and not a lithium polymer battery. Depending the technology, li-po batteries can charge much faster safely because they don't have the same thermal limits as lithium ion and have much less chance of exploding or catching fire. Apple some years back boasted that they had new battery tech that would allow their batteries to charge faster. If you do some internet reading on lithium polymer batteries, there are some that have characteristics to do this. As far as I know, the iphone was made after they acquired this technology and have been using it in their mac books for years, as well as the iphone.
To me it's not a huge deal, but it is less convenient than if it were able to charge faster.

Jayrod1980 said:
I'm saying there's no technological barrier to the Nexus S charging faster. Samsung just made it that way. Could also be because it uses a Lithium Ion battery and not a lithium polymer battery. Depending the technology, li-po batteries can charge much faster safely because they don't have the same thermal limits as lithium ion and have much less chance of exploding or catching fire. Apple some years back boasted that they had new battery tech that would allow their batteries to charge faster. If you do some internet reading on lithium polymer batteries, there are some that have characteristics to do this. As far as I know, the iphone was made after they acquired this technology and have been using it in their mac books for years, as well as the iphone.
To me it's not a huge deal, but it is less convenient than if it were able to charge faster.
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Well I am fine with the nexus S its something I have come to live with however I dont want this thing to be the case in my next phone.
Microsoft boasted how quickly the surface RT charges due to some new technology. Really it does matter, I suppose good for those who dont really care about it.

ctowne said:
I always wondered why the iPhone charged so much faster than any android phone I owned
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I have tested 2 android phones that charge just as fast.
Xperia arc S and LG optimus 2X.

Takes me like 2hrs to fully charge my Nexus 4.
Sent from my Nexus 4 using Tapatalk 2

Gambler_3 said:
I have tested 2 android phones that charge just as fast.
Xperia arc S and LG optimus 2X.
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Click to collapse
That's weird because I had a G2x and that charged slower than the iPhone I had at the same time

There is clearly a link between the temperature of the battery and the charging current in the thermal management of the device :
bat_temp(C) cpu(MHz) gpu(MHz) LCD index of predefined charging current
36 1512 400 248(400nit) 0 (900mA)
37 1296 325 228(360nit) 0 (900mA)
38 1296 325 208(325nit) 0 (900mA)
39 1188 200 195(300nit) 1 (700mA)
41 1188 200 195(300nit) 1 (700mA)
42 1188 200 195(300nit) 2 (600mA)
45 1188 200 195(300nit) 3 (400mA)

[Q] does higher mAh harm the battery?

the attached charger with z1 is a 1500mAh charger and i bought a 2100mAh charger which charges faster for sure.I wanna know does this harm the battery?i mean if it was ok why the sony didnt attached a 2100mAh or higher with its flagship!?

NiM72NiK said:
the attached charger with z1 is a 1500mAh charger and i bought a 2100mAh charger which charges faster for sure.I wanna know does this harm the battery?i mean if it was ok why the sony didnt attached a 2100mAh or higher with its flagship!?
Click to expand...
Click to collapse
mAh tell you about the capacity of the battery. You can even use 1 million mAh.
..and no it won't harm the phone

It does reduce the battery life. Or at least have a little impact on it.
Sent from my C6902 using xda app-developers app

crohit911 said:
It does reduce the battery life. Or at least have a little impact on it.
Sent from my C6902 using xda app-developers app
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Click to collapse
Battery life has nothing to to with the capacity of the portable battery? What are you talking about.
Every charging reduces the battery life. That's why it is recommended to only charge the phone when it is at 10-20% and try to charge it to full.

crohit911 said:
It does reduce the battery life. Or at least have a little impact on it.
Sent from my C6902 using xda app-developers app
Click to expand...
Click to collapse
what exactly impacts the battery ? how a 1500mAh charger doesnt harm it and a 2100 does while its a 3000mah?

NiM72NiK said:
the attached charger with z1 is a 1500mAh charger and i bought a 2100mAh charger which charges faster for sure.I wanna know does this harm the battery?i mean if it was ok why the sony didnt attached a 2100mAh or higher with its flagship!?
Click to expand...
Click to collapse
no it won't
it will just charge your phone slightly faster,
if there's more than 2000 input then the phone will put a limit on it. so it should be fine

The discharge rate.
I might be wrong though cause I didn't read properly.
But voltage does have some impact.

choihan06 said:
no it won't
it will just charge your phone slightly faster,
if there's more than 2000 input then the phone will put a limit on it. so it should be fine
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Click to collapse
why 2000? what wrong with 2500mAh??!! I think 3000should be the limitation because more than that is going to harm it! isnt it right?

NiM72NiK said:
why 2000? what wrong with 2500mAh??!! I think 3000should be the limitation because more than that is going to harm it! isnt it right?
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Well the phone is designed that way, i mean sony engineers should be smarter than us so i assume its a best option.
When i use 2.0A galaxy note3 charger on my z1 it takes about 1500-1700mah but no more than 1700.
Sent from my C6906 using Tapatalk

I use a 12000mAh portable charger from New Trent and my phone battery is in perfect shape. It does not harm it in any way. I don't understand where the confusion is coming from.
http://www.amazon.com/New-Trent-iCarrier-Smartphones-Micro-USB/dp/B003ZBZ64Q
mAh is a capacity measure , the bigger the capacity the more times you can charge the phone on a single charge (and usually also the bigger and more expensive the battery)
It's the Amperes which are Voltage/ sec given to your phone that you should worry about. Pretty much all portable chargers are suited to mobile phones and should not cause any harm.

I thought you were talking about travel adapter charger..
Yes current provided and voltage matters.
Silly me I was confused between mah and Amperes..
Thanks man!
But I think he's refering to amperes. Cause the one provided with z1 is 1.5 amp. And the portable battery is 5 ah. So he bought a 2.1 ampere charger.

NiM72NiK said:
the attached charger with z1 is a 1500mAh charger and i bought a 2100mAh charger which charges faster for sure.I wanna know does this harm the battery?i mean if it was ok why the sony didnt attached a 2100mAh or higher with its flagship!?
Click to expand...
Click to collapse
There seem to be quite alot of confusion here. I am sure you mean the output of the charger, but if you mean the capacity of a portable charger, then it doesn't matter if it is 1000mAh or 1000,000mAh. But if you mean the output of the charger, then we don't really have a clear answer as this was asked few times in the forum, but I will try to explain the conclusion we came to.
our phone is supposed to support quick charge 2.0 which means in theory, we can use chargers with ~4.0 A (if I remembered correctly). why sony used 1.5 A is not clear, but I don't think using 2.0 A would have any effect except slightly faster charging time. I have been using my SGS4 charger (with 2.0 A output) since I got my Z1 (since release date). Last time I looked for even more powerful chargers ~3 months ago, I found that chargers with 4.0 A output has not been released yet and will be released early 2014. When they are released, i will contact sony and see if I can use it with my Z1 as in theory this should mean half charging time. I hope this helps

it won't harm the battery

The higher mAh rating might not have a direct affect on your phone... But what you said that the battery charges faster is a cause of concern. Do check the output of the charger you got with the battery. If the current rating is higher than your stock charger then maybe you're phone circuits may have problems.
Sent from my Galaxy Nexus using Tapatalk

shem2409 said:
Battery life has nothing to to with the capacity of the portable battery? What are you talking about.
Every charging reduces the battery life. That's why it is recommended to only charge the phone when it is at 10-20% and try to charge it to full.
Click to expand...
Click to collapse
Its the other way around, avoid going down to ~10% and try to keep it above 50%
Sent from my Xperia Z1

The higher charger will increase HEAT and heating is the battery most bigger enemy .. Thats it.
Sent from my C6903 using Tapatalk

I'm sure he meant the charge rate of the charger.
Maybe it won't affect at all since the charge current rate is set by the battery chip, not by the charger. What the charger label says is the max output current, not necessarily the actual rate.
Sent from my GT-N7100 using Tapatalk

Higher current may hurt abit, higher voltage hurts more

Been using the blackberry rapid charger but not overcharging the phone and its been fine, been using it for years. FYI, chargers are measured in volts and amps. The bb one is 2amp and 5 volts.
Sent from my C6903 using XDA Premium 4 mobile app

You cannot judge or decide anything, except you know what electronic part used by that phone which have specific normal rating and resist maximum ampere. So, everything you do with your charger is Gambling!! But, I suggest not too much the different
~~~
sent from Slim & Thin Andromax