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  1. D

    Battery Charger/capacity tester build and bench top power supply build

    So just a few days ago i ended up with 21 sealed laptop batteries for $30. After busting them open so to speak and put the DVOM on them i had 19 register 0v, 19 register 0.5-1v, and ~80 3.1-3.9v. With that said i am is the mist of just gathering as many as possible with out a huge investment...
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    HI From US in Michigan

    New to electronics and with the virus stuff going on developing new interest. liking the whole powerwall and off the grid living and have been watching HBPowerwall on a sorta binge worthy nature. looking to start my very own system and in the absolute beginning stages of learning.