BN-V428 Lithium-Ion Battery - Rechargeable Ultra High Capacity (3300 mAh) - replacement for JVC BN-V428U Battery Replacement battery for the JVC BN-V428, Lithium-Ion (Li-ion) 7.4V (3300mAh) 100% compatible with your OEM battery - 3 year warranty. Made with high quality Japanese cells. Synergy Digital is a Registered Trademark