Hi All,

I have a DJI genuine phantom 2 battery that has had 7 flights and has been functioning flawlessly until today.

Before every flight I record the cell voltage, battery full capacity and each cell mah. Today this battery after arming decided to drop its voltage from 98% to 71% in about 2 minutes.
When I was home I checked the battery with the assistant and found that one cell had dropped considerably and cell two had actually increased from its charged value.

It will not charge and has never been discharged below 50%.

here are the battery details

Before Flt                     After Flt
Vlt 98%                            Vlt 71%
Full Cap 5389mah        Full Cap 3442mah
cell 1 cap 4168mah     cell 1 cap 3468mah
cell 2 cap 4169mah     cell 2 cap 4811mah
cell 3 cap 4172mah     cell 3 cap 3996mah

It looks like the charge from cell 1 has transferred to cell 2

Hello Aus67, I'd suggest you to discharge and charge the battery thoroughly.Then check it again.