A SoC (State of Charge) indicator turns out not to be a simple thing. There is no reliable way to know the actual SoC of a Li cell by measuring its terminal voltage. Instead, the usual approach is a Coulomb Counter that actually watches the amount of charge drawn from the cell(s) and tracks it.Thanks for the info, all of my units with rechargeables in have some sort of charge indicator, my laptops, my phone, my worklamps, my drill, my impact driver, my pressure sensor. I cant understand why there's a 100'ds of different, from cheap to not cheap, charge boards/pcb's out there non with any sort of charge indicator
by Aaron Carman
by Jake Hertz
by Jake Hertz