Hedges
I See Electromagnetic Fields!
- Joined
- Mar 28, 2020
- Messages
- 21,318
I would only recommend this with lead-acid, e.g. automobile starter battery. That can take brief excess current.
Lithium could be damaged, so don't use that.
No, I meant battery connected directly to lead-acid battery, no charge controller.
Individually to charge controller for 24V battery, PV voltage would be too low to deliver current.
You already tried 2s2p. Try 2s, then the other 2s, then swap which panels in series and try again.
The idea is to see if some panel is under-producing the others.
Are these new?
I had some degrade after 15 years use.
Can you measure Voc of each panel? Isc?
Lithium could be damaged, so don't use that.
No, I meant battery connected directly to lead-acid battery, no charge controller.
Individually to charge controller for 24V battery, PV voltage would be too low to deliver current.
You already tried 2s2p. Try 2s, then the other 2s, then swap which panels in series and try again.
The idea is to see if some panel is under-producing the others.
Are these new?
I had some degrade after 15 years use.
Can you measure Voc of each panel? Isc?