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Pentax Optio L50 Battery and Charger - Replacement for Pentax D-LI78 Digital Camera Batteries and Chargers (750mAh, 3.7V, Lithium-Ion) : Amazon.ca: Electronics
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Amazon.com: Estry Battery Replacement for Optio M50 Optio S1 Optio V20 Optio W60 Optio W80 Optio L50 Optio M50 Optio M60 Optio V20 Optio W60 Optio W80 D-Li78 : Electronics
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