The last firmware update caused incompatibility with third-party batteries
Back in November, Nikon released a new firmware update for its D3100, D3200, D5100 and D5200 digital SLRs, meant to improve overall battery performance by optimizing the way your camera works with EN-EL14a batteries.What Nikon didn't say is that the new firmware also makes non-brand batteries incompatible with the aforementioned cameras. As reported by our users, it seems that not all third-party batteries were affected by this firmware upgrade and some of the manufacturers have already released updated models that are now recognized by Nikon cameras.
A while ago, we were talking about a new firmware hack that enables manual control in LiveView mode on the Nikon D5100 and also removes LCD icons that appear when using the LiveView mode via HDMI.
The guys at NikonHacker, have released a new version of their firmware hack that adds support for non-brand batteries when used with Nikon D3100 and D3200 digital SLRs. If you experience any issues with your third-party batteries, you should try this small Nikon firmware hack that will solve your problem.