Varta V 625 U alkaline 1.55 V battery: Amazon.de: Electronics & Photo
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Praktica Batteries
Praktica Batteries
V Mount V Lock Battery 185wh-222wh 14.8v 15000mah Rechargeable Li-ion Battery For Sony Photo Studio Broadcast Video Camcorder - Rechargeable Batteries - AliExpress
Replacement for PX625 battery: Film Photography Talk Forum: Digital Photography Review