I would like to test state of charge on AAA, AA, and maybe 18650 batteries. I have a cheap tester that has a little needle that has a red zone, yellow and green but I it does not seem to be accurate. A battery can be in green but still doesnt seem to be fully charged when I put it in a light. I do have a multimeter I could use but its always at the shop when I need to check something at home.
One that also load tests would be nice but I prefer not to spend too much.
Any suggestions for me?
One that also load tests would be nice but I prefer not to spend too much.
Any suggestions for me?