Clearmax 2 Pack of High Capacity Batteries For Panasonic DMW-BLF19 and Panasonic Lumix DMC-GH3, and Panasonic Lumix DMC-GH4 Cameras This Kit Includes 2 Clearmax BLF19 High Capacity Lithium-ion Batteries Rechargeable Li-Ion Batteries with Premium Battery Cells Integrated Microchip Prevents Overcharging & Lengthens Battery Life The Panasonic Info-Lithium Rechargeable Battery Pack is for Panasonic DMW-BLF19 and Panasonic Lumix DMC-GH3, and Panasonic Lumix DMC-GH4 Cameras