Sony Alpha DSLR-A390 Digital Camera Battery Lithium-Ion (900 mAh) - Replacement for Sony NP-FH50 Battery Replacement battery for the Sony NP-FH50, Lithium-Ion (Li-ion) 7.4V (900mAh) 100% compatible with your OEM battery - 3 year warranty. Made with high quality Japanese cells. Synergy Digital is a Registered Trademark