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I have 4, 6v deep cycle, 200 ah batteries in series/parallel. Since they are 6v each, I realize that I have a total of 400 ah collectively. That means that I have 200 usable ah before needing to recharge.
When configuring the Vicktron 712 Battery Monitor, would I use the 400ah setting?
I am just making sure that I should not be using 800ah as my setting since they are 6v batteries connected in Series.
Thanks!
It’s the Capacity spec @ 20h you want to input when setting up the 712 and not Reserve Capacity, so make sure the 200ah is the Capacity spec and not the Reserve Capacity Spec.
Capacities/Amps remain the same when wired in series with Voltage doubling, and the opposite when wired parallel, so then you have 2x6V@200 series=200 @ 12V plus another 2x6V@200 in series=200 @ 12V. The two banks in parallel then combine for a total of 400 @ 12V.
If you have 4x 6v 200Ah batteries wired in series/parallel configuration, the final battery bank will be 12v 400Ah. The BMV simply treats the battery bank as one large single battery.
Accordingly you should enter 400Ah into the BMV setup, regardless of the fact that you will not discharge the batteries to below 50% SOC.
You can then set the 'discharge floor' on the BMV to 50% and the 'time to go' calculation will consider this discharge level in that calculation.
