Three Halcyon 1800 mAH Lithium Ion Replacement Battery and Charger Kit for Sony HDR-AS20 Camera and Sony NP-BX1 Package Includes: 3 Halcyon Brand Battery & 1 Halcyon Brand Wall & Car Rapid Charger Battery Specs: 1800 mAh with Premium Japanese Cells 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-BX1 Batteries