3.7V 800mAh Li-ion Battery for PENTAX Optio A10, A20, A30, A36, A40, E65, L20, T10, T20, W10, W20, WP, WPi, X, PENTAX Optio S Series, (Fits selected models only), Compatible Part Numbers: D-LI8, D-Li85, Battery Type: Li-ion Voltage: 3.7V Capacity: 800mAh Color: French Grey Dimension: 40.28 x 35.28 x 6.10 mm Weight: 56.7 g Product Type: Replacement Battery (Brand New) Condition: New, 1 year warranty! Please ensure the product(s) that you are going to buy fits the brand, model, part number and dimension (mentioned above) of your device.