Battery State of Charge Meter
- To determine the state of charge for our battery banks, we have found
the best thing to use to be the E-Meter see the following as examples:
It samples measurements of current into and out of the battery along
with voltage to calculate the state of charge. It also will correct it's
self over a number of discharge cycles to become more accurate. It does
internal curve matching to the actual battery bank you end up with.
Costs about $250 but is worth it. It does take a bit of setup
programing. It works with a verity of voltages. We use one for our 12 V
system and another for our 48 V system.