Air 2S New Battery Capacity (3750 mAh)

[mobilehomer]

I have 2, 3500 and 1, 3750 and they all have the black square on the end.

I only have the 3750, all 4 black squares. Other threads have shown the black on them also. Oh, well, live and learn. Glad to learn that, thanks Epic.

 

[blackbirdsr72]

I have 2, 3500 and 1, 3750 and they all have the black square on the end.

I have 4 batteries (3500 mAh) and all have those black squares.

 

[unzari]

Check the first 3 digits of the serial number that should tell you which one it is. I think the lower voltage one starts with 57Z- whereas the original one is 1Z3-