Hello,
I’m trying to charge my 10kwh li-ion battery pack (18s) using 2 x 340w solar panels connected in paralel. Panel voltage is 35.5v. I’m using MPT 7210A as a charge controller, battery charge cut-off set to 73.4 volts. I can’t figure out why doesn’t go over 96watts. I’ve tested with a dc-dc 1200w step up converter and I get about 500watts, but with mpt 7210 cannot go over 96watts. I’ve put a step up between the battery and mpt, set the output to 60 volts instead of 73, and I get about 400watts, but when connected directly to the battery pack, it seems to stop at 96w. Also, panel voltage doesn’t go under 36.7v. Any idea how to solve this?
I’m trying to charge my 10kwh li-ion battery pack (18s) using 2 x 340w solar panels connected in paralel. Panel voltage is 35.5v. I’m using MPT 7210A as a charge controller, battery charge cut-off set to 73.4 volts. I can’t figure out why doesn’t go over 96watts. I’ve tested with a dc-dc 1200w step up converter and I get about 500watts, but with mpt 7210 cannot go over 96watts. I’ve put a step up between the battery and mpt, set the output to 60 volts instead of 73, and I get about 400watts, but when connected directly to the battery pack, it seems to stop at 96w. Also, panel voltage doesn’t go under 36.7v. Any idea how to solve this?