SDNP500 Lithium-Ion Battery - Rechargeable Ultra High Capacity (3.7V 1000 mAh) - Replacement for the Konica-Minolta DR-LB4, NP-500 & NP-600 Batteries Replacement battery for the Minolta NP500, Lithium-Ion (Li-ion) 3.7V (1000mAh) 100% compatible with your OEM battery - 3 year warranty. Made with high quality Japanese cells. Synergy Digital is a Registered Trademark