This is the newly-developed high-energy EN-EL4a rechargeable lithium-ion battery, with significantly increased capacity on a single charge. It can be recharged at any time and it also features a remarkable fuel gauge system display that shows remaining charge by percentage, number of shots since last charge and overall battery status.

Compatible with the following Nikon D-SLR cameras:
D2H / D2Hs / D2X / D2Xs / D3 / D3s / D3x / D300* / D300s* / D700*

* when using optional MB-D10 battery grip (required)