GTMax Replacement DMW-BCJ13E/BCJ13PP Li-Ion Battery for Panasonic Lumix DMC LX5/LX5K DMC-LX7/LX7K Digital Camera Best replacement for your Panasonic DMW-BCJ13. Battery Voltage: 3.7V; Type: Lithium-Ion. No memory loss effect. Integrated microchip prevents overcharging & lengthens battery life. This battery does not show battery remaining time.