canon 1d mk iin battery dying

[jasper1889]

Batteries are fully charged then suddenly camera stops working and battery shows empty.
I have 4 batteries 2 are canon 2 new third party off e bay.
turn camera off and back on and battery shows full again then dies again.
anyone know what this is.

 

[LongLensPhotography]

some of mine are pretty old, and they would just drain fairly quickly, but no real drama. They go through half charge, blinking and only then cut of (only had it once in the cold).

In your case it could be electric contact issue, or some water damage, rusting?

Does it happen with all your batteries, and only started recently or suddenly? If it's a yes, it is probably bad news.

Unfortunately many fake batteries do not seal well at all creating a path for water to drip in. This could only lead to corrosion.