I didn’t post about this latest battery observation on Monday because I wanted to repeat the experience, which I did tonight.
When I shut down for the night on Sunday, my battery voltage was very low, about 12.3 when I was only down a few amps. I had left my computer plugged in all day, but it draws only about an amp when it’s fully charged rather than 4 or 5 to charge it, so I’ve decided to sacrifice the laptop battery for the sake of the house batteries.So, really, I should have been sitting at 12.55V once everything was off and the computer unplugged.
When I got up up the next morning, voltage was about 12.45V, much better than the night before but still not right. I ran the engine for all of five minutes. An hour after shutting down the engine, voltage had stabilized to 12.57V. It’s almost like the computer exhausted the batteries and they needed a little boost.
Similar situation tonight, except that when I unplugged the computer to see where I was at voltage-wise, it was 11.99V!!!!! Even though I knew that was not a true reflection of my amp hour capacity, I couldn’t spend the night with that little voltage! I ran the engine for five minutes and now voltage is holding steady at 12.5V, even with the computer plugged in and a light on.
I’m sure some of my experts have been chomping at the bit to jump back into the electrical theories arena, so have at it! 🙂
And for those who have heard enough about my batteries to last a lifetime, I do apologize. 😉