- Rechargeable up to 500x - Precharged & ready to use - Retains 85% of its charge for 1 year when not in use - No memory effect - Can be charged when partially drained Eneloop PRO High Capacity Ni-MH Rechargeable Batteries eneloop pro High Capacity Ni-MH 'Low Self Discharge' batteries utilize Panasonic’s advanced rechargeable technology which delivers increased power capacity for high power consumption devices. These battery cells are ideal for products like Digital Camera (DSLR) flash units, remote control toys, and tactical flashlights.