May 31, 20197 yr Hi All, I have a problem with my mppt showing 100% allday, but as soon as i start load it immediatly drops to 80%. It is a 30 amp, with 2 x 200watt Panels connected in parallel with 2 x 200 a/h Gel Batteries. I only run 12v/3w lights of the system. Most lights run are about 8 of them. Could it be the batteries that are faulty. Regards and Confused.
May 31, 20197 yr You have an MPPT that shows SOC? Which one? Sounds to me like it might be one of those voltage-based ones... which means you should pretty much ignore what it says.
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