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Amazon.com: Kastar Fast Dual LCD Charger + 2X Battery for Pentax Ei-D-Li1 EI-D-BC1 Pentax EI-2000, Trimble 29518 46607 52030 54344 38403 5700 5800 R6 R7 R8 GNSS TR-R8 GPS, HP C8873A HP
![Working on an external power power supply for my Pentax 645. This is the first prototype! Total cost has been less than $20 which is a lot cheaper than buying an external Working on an external power power supply for my Pentax 645. This is the first prototype! Total cost has been less than $20 which is a lot cheaper than buying an external](https://i.redd.it/working-on-an-external-power-power-supply-for-my-pentax-645-v0-5h1v6ki0aro81.jpg?width=1536&format=pjpg&auto=webp&s=eb0f1fca1c1760dec26d0e8cf0b7cbfb3ea33d9c)
Working on an external power power supply for my Pentax 645. This is the first prototype! Total cost has been less than $20 which is a lot cheaper than buying an external
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