JWRoberts wrote:
korbe wrote:
I have had that same question. I tested mine after I got back from a trip.
My 2 6-volt T-105's (225ah) were down to about 50 percent when we started driving down the road. I used my hand-held volt meter to test that percentage. I tested the rested batteries the next morning after a 10 hour drive. My volt meter tested them at 90 percent. Nothing but the parasitic draws while driving down the road. No fridge or TV. :)
Not scientific by any means but it satisfied my curiosity.
A voltmeter can not determine the state of charge of a battery. Only a load tester can do that. You were probably well below the 50 and 90 percent that you stated.
Well, I have been using my volt meter and measuring the readings in volts for a lot of years. Doesn't the volt reading measure state of charge? I must be missing something.
