Originally Posted by deansaunders
Come to think of it, from what I've seen of batteries if you take away the little bar of charging circuitry then it's simply a block with a couple metal bits poking out. If the little bar was removed from a Nexus battery and fitted onto a G2 one then would it work as 3000 or will the charging circuit be programmed as 2300 max and so wouldn't charge it past that point?
My HTC Desire HD is "fitted" with an Evo 3D battery, which is bigger and thus sticking out. (But it worked for a lot of us because we use latex/plastic covers anyway.)
The problem with this is: The Evo 3D battery doesn't discharge any slower than the stock battery. And it's 1900mAh while the stock battery is only 1230mAh.
What happens is that while discharging the battery somehow "gets stuck" at 15% and stays on that percentage for hours before continuing to discharge.
If you plug the phone into the charger, this "getting stuck" doesn't happen but it takes a looong time until the battery is fully charged at 100%. If you use Battery Monitor Widget you can see that the phone goes up 1% by charging an amount of Ah and once it reaches 100% it continues to charge at least another 5 times this amount.
So using the g2 battery is very likely going to work, but it will also very likely mess up what your phone reports.