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  1. S

    Small IR 18650 doesn't hold charge

    Sorry guys for late response, I had a surgical operation and just recovered. I am using YR1035 to measure the IR and using dso3d12 3 in 1 for measuring the voltage of the cells (really a consistent voltmeter). I have bought the batteries last summer from a local vendor here. Furthermore, I...
  2. S

    Small IR 18650 doesn't hold charge

    I have a 5S2P battery project and for this project I did tests to select the ones in good condition from the Samsung 30q batteries I have. Accordingly, I first measured the capacity of the batteries I selected. I measured the internal resistance of those between 2800-3000mah. I finally fully...
  3. S

    DIY Arduino timed spot-welder, FET-switched, adj. pulse

    Hello everyone. I am not that good at electronics and I have bought 5kp14a last month. But I think I made a mistake and bought bidirectional one. Does it work as protection TVS diode?
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