High Capacity 2500 mAh, 7.0V Compatible Model: D500 D600 D610 D7000 D7100 D7200 D750 D7500 D780 D800E D810 D810A D850 Nikon 1 V1 Z 5 Z 6 Z 7 When you recharge a conventional battery before it is fully drained, the battery remembers it is using less than a full charge, resulting in a memory effect which is a loss of capacity.