Solar Panel Compatibility Keystone OEM and Rich Solar Mega 24V Panel

[upontheridge]

I have a Keystone RV with the Solarflex 200i system. The panel that came with that system is an OEM-exclusive panel. Specs on the back of the panel are below along with specs from Rich Solar Mega 24v Panel. Are these panels similar enough to use together and if so, would you recommend connecting them in parallel or series? The wiring from the Jaboni port on the roof to the SCC is 10-gauge wiring. The current SCC is a Victron75/15. I will upgrade to 100/30 before installing unless a 100/50 would be recommended.

Panel Model	Keystone 0EM made by Allesun-200-3611	Rich Solar Mega 24V Panel
Rated Maximum Power (Pmax)	200W	200W
Voltage at Maximum Power (VMP)	41.70v	37.6v
Current at Maximum Power (Imp	4.8a	5.32A
Open Circuit Voltage (Voc)	49.8v	45.4V
Short Circuit Voltage (Isc)	5.09A	5.83A
Tolerance	0 to 5%
Maximum System Voltage	1500vdc	1000VDC
Maximum overcurrent protection	15a	15A
Dimension	10.75x39.45x1.38	58.7x26.5x1.4
Weight	26.46lbs	26.5​

 

[Supervstech]

What voltage is your battery bank?

 

[Supervstech]

What is the coldest weather the panels will EVER be exposed to?

100V doesn't give you much clearance with a 49.8 and a 45.4V panel...

 

[mikefitz]

100/30 is OK. Connect the panels in parallel.
An option would be to add a second 75/15 just for the second panel, and have the controllers operating in parallel. This would allow maximum yield under all conditions.




parallel.

 

[Supervstech]

Agreed... I wouldn't get rid of the 75/15 I would get another one...

 

[upontheridge]

What voltage is your battery bank?

12 volt

 

[upontheridge]

What is the coldest weather the panels will EVER be exposed to?

100V doesn't give you much clearance with a 49.8 and a 45.4V panel...

Coldest would probably be 20 degrees

 

[upontheridge]

100/30 is OK. Connect the panels in parallel.
An option would be to add a second 75/15 just for the second panel, and have the controllers operating in parallel. This would allow maximum yield under all conditions.




parallel.

 

[upontheridge]

Adding the wiring for a second SCC would be a complicated process with my RV configuration. I was planning to use the 75/15 controller for a third portable panel. Would you recommend going with a 150/30 SCC or will the 100/30 be sufficient.

 

[Supervstech]

Keeping everything parallel, the 100/30 will be fine.