Using electrochemical impedance spectroscopy (EIS) techniques to help obtain battery working conditions like SOH and SOC.

They’re inexpensive and easy to use, and they help keep you safe when doing DIY electrical work. Solution: Test. Use. Verify. First, test the tester by holding it to a known live circuit, like a ...

Personally, I don't recommend wasting money on cheap multitools. It's a false economy and a classic case of 'buy cheap, buy twice.' I've been sent dozens for testing, and they've all been poor quality ...