Nikon D3s Body Only D3S User's Manual - Page 450

The following can reduce battery life: • Using the monitor • Keeping the shutter-release button pressed halfway • Repeated autofocus operations • Taking NEF (RAW) or TIFF (RGB) photographs • Slow shutter speeds • Using the optional WT-4 wireless transmitter • Using the optional GP-1 GPS unit • Using VR (vibration reduction) mode with VR lenses To ensure that you get the most from rechargeable Nikon EN-EL4a batteries: • Keep the battery contacts clean. Soiled contacts can reduce battery performance. • Use batteries immediately after charging. Batteries will lose their charge if left unused. • Check the condition of the battery regularly using the Battery info option in the setup menu (0 333). If j is displayed for Calibration, calibrate the battery using the MH-22 quick charger (if the battery has not been used for more than six months, recharge the battery when calibration is complete). n 424