Many of you know I damaged my batteries by allowing them to discharge to 6V. The question at this point is: how much capacity do they have, and how much can I get back?
Well, they seem to rest around 128V after a full charge. They're supposed to rest at 132V. And with a bottom of 105V, that's... 85% of their original capacity. Assuming you can use voltage to determine capacity in AGM batteries, which you really can't. (You need to check voltage under load, which is hard to do with just your eyes.)
I'm using every technique I can think of to restore the batteries. Some of those techniques require a lot of monitoring.
You can imagine my surprise when I went to check the charge yesterday and discovered that I was draining 18 amps! I cut off the charger and my E-meter claimed I was actually draining 28 amps!Continue reading "Judebert's EV Conversion Diary: Ghost Drain" »