The AdirPro BC-80 NiMH Battery for Nikon Total Stations provides approximately 10.5 hours of continuous distance and angle measurement. Works with the Nikon NPL-821, DTM-801 and DTM-500, 501, 502 series total stations, the lower power consumption pattern of these survey equipment also minimize memory effect on the battery.
It has an output voltage of 7.2V and 3800 mAh capacity. The charging time is approximately 2 hours using the affordable AdirPro Q-75E charger.