2x D-LI8 D-LI85 Battery for Pentax Optio S6 S7 S5i S5z S5n S4 S4i S SV SVi WP WPi W10 W20 A10 A20 A30 A36 A40 Optio X T20 T10 E65 Optio
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Amazon.com : Battery Pack and LCD USB Travel Charger for Pentax Optio T10, T20, W10, W20 Digital Camera : Electronics