Panasonic DMW-BLJ31 LUMIX S Series Battery

The Panasonic DMW-BLJ31 is the factory-specified lithium-ion battery for the LUMIX S1, S1R, and S1H full-frame mirrorless cameras. With a 3050mAh capacity at 7.4V, it delivers one of the higher energy reserves found in mirrorless camera batteries, which is particularly important given the power demands of these bodies — especially the S1H with its continuous video recording capabilities. As an OEM component, the DMW-BLJ31 communicates directly with the camera's firmware to provide accurate charge level readings and to support all power management features without compatibility warnings.

For photographers and videographers who rely on their LUMIX S Series gear for professional work, carrying genuine Panasonic batteries reduces the risk of unexpected shutdowns or metering inaccuracies that can sometimes occur with aftermarket cells. The trade-off is a higher per-unit cost, but for critical shoots where reliability matters, the DMW-BLJ31 remains the standard choice. It is rechargeable via the included camera charger or Panasonic's dedicated external charging accessories.