The high-capacity Sigma BP-31 Rechargeable Lithium-Ion Battery is compatible with the Sigma DP-1 Digital Camera, and features Lithium technology, which ensures maximum battery life and maximum power. It also features No Memory Effect that lets you recharge partially drained batteries without reducing performance.
Reviews Sigma BP-31 Rechargeable Lithium-ion Battery for Sigma DP-1 & DP-2 Digital Cameras (Sigma Malaysia)