How much juice is there between 4.2 and 4.35V?

Batteries and Chargers Rechargeable Batteries
1

Hi!

I tested my phone battery last night, because the Screen-On time is quite low on my Xiaomi Redmi Note 2 (otherwise an incredibly good device for that small price!).

The battery says 3020mAh - my Lii-260 got 2321mAh - But the battery says also “4.4V” - So I assume, it’s a 4.35V LiIon.

Are the missing 700mAh in those .15V or is the battery not what it claims to be?

Thanks!

2

my 2800mah 18650-28a give about 2400 at 4.2v so seems pretty close ratio