pianotuna wrote:
Hi,
About half that 3 to 4 amps may be parasitic loads from the RV. What make and model is the charge controller?
Fully charged from a "smart" converter may take 168 hours.
Voltage doesn't really tell you much about state of charge. For that a decent temperature compensated hydrometer would be the best choice.
Many tables list 12.2 volts as 50%.
My controller is a Soltek Mark IV 20 amp. I spent a little time watching it and it appears as though it will charge for a few seconds and then cut out for a few seconds after the batteries are charged. Maybe it is fine to just leave the fuse in?