Battery got here today, which confused the hell out of me because it came in an Amazon box (I didn't buy it from Amazon), and when I checked the tracking status this morning it said a tracking label had been generated but hadn't been picked up by the carrier yet.
Anyway, the OEM battery is rated 2820 mAh and the new one says it's a high capacity battery rated 3200 mAh. I assume that's Chinese mAhs ,
but the battery is slightly thicker than the original was before it puffed up so maybe it really is an honest 3000, or even 3200 (I doubt 3200.) It's tight but it fits, the back went back on okay, and the new battery has 61% charge. I'm going to discharge it down until the phone shuts off at 10% or so, then fully charge it and see what the AccuBattery app says about it. The old battery was shutting down at anywhere from 35% to 49% so I couldn't get it below 15% where AccuBattery could figure out the capacity, but even w/o that it said the old battery was down to about 1800 mAh so it was probably considerably less.
I may put the phone in a steel ammo box with sand in the bottom the first time I charge it in case it catches fire.