These are the 2300mah version, versus the 2800mah version. I kind of wonder if the 2300mah are simply 2800mah that didn't hit the mark at the factory, but as 2300mah they certainly do, at least with my testing. Cost was $1.22 @ (8 for $9.69/free shipping) and rated at 1500 cycles.
Voltage was about 1.28v when I received them. Initial charge at 1000mah, discharge rate 500mah. Capacity 1st cycle,
2288mah,2315mah,2307mah,2218mah.
Second cycle 1000mah charge, 500mah discharge. Hitting the mark at 2391mah,2459mah,2458mah,2374mah.
I think a good deal, but time will tell from here on out.