Halcyon 1800 mAH Lithium Ion Replacement Battery for Olympus Pen E-PL3 12.3 MP Digital Camera and olympus BLS-1 Package Includes: 1 Halcyon Brand Battery 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 olympus BLS-1 Batteries