Amazon.com : Replacement for Pentax MX-1 Battery and Charger with Car Plug and EU Adapter - Compatible with Pentax D-LI106 Digital Camera Batteries and Chargers (2150mAh 3.7V Lithium-Ion) : Electronics
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D-Li106 DLi106 Battery For Pentax MX1 MX-1 Option X90 X-90 Camera 1500mAh /USA | eBay
2x Pack - Pentax MX-1 Battery + Charger - Replacement for Pentax D-LI106 Digital Camera Battery and Charger (2150mAh, 3.7V, Lithium-Ion) | Walmart Canada