Pentax D-L18 Rechargeable Lithium-Ion Battery (3.7 Volt, 710mAh) for Pentax Optio S, S6, S4i, S5i, S5z, WPi & WP Digital Cameras

The high-capacity Pentax D-L18 Rechargeable Lithium-Ion Battery is compatible with the Pentax Optio S, S6, S4i, S5i, S5z, WPi & WP digital cameras. It 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.