Two Halcyon 2200 mAH Lithium Ion Replacement Battery Kit for Sony NP-FW50 Package Includes: 2 Halcyon Brand Extended Replacement Batteries Battery Specs: 2200 mAh with Premium Japanese Cells / 7.2V Halcyon Support: Includes 5 Year Halcyon Replacement Warranty. Full Membership Access to Halcyon Customer Support Website Frustration Free Packaging. No wasteful and dangerous plastic blister packs. Compatible with all cameras which take Sony NP-FM500H Batteries