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**JRTJH** · 07-27-2021, 07:59 AM

Parasitic drains on the system range from around 1 amp to as much as 2.5 amps. Adding a 10 watt solar system (that's 10 watts in full sunlight and much less on cloudy days) will put around 0.8 amps into the battery at best and significantly less than that as an average...

It's a "losing battle" to even spend the time and effort to put that small of a solar charger on an RV 12 volt electrical system.

I'd equate it to trying to use 1" finishing nails to build a wall with 2x4 studs. Those nails won't even go through the 2x4, much less secure them in place. It's the same using a "half amp charger" to keep a system that's consuming 2-3 amps charged. At best all you'll be doing is providing storage for a "too small solar system on the roof"....

07-27-2021, 07:59 AM	#4
JRTJH Site Team Join Date: Mar 2011 Location: Gaylord Posts: 26,979	Parasitic drains on the system range from around 1 amp to as much as 2.5 amps. Adding a 10 watt solar system (that's 10 watts in full sunlight and much less on cloudy days) will put around 0.8 amps into the battery at best and significantly less than that as an average... It's a "losing battle" to even spend the time and effort to put that small of a solar charger on an RV 12 volt electrical system. I'd equate it to trying to use 1" finishing nails to build a wall with 2x4 studs. Those nails won't even go through the 2x4, much less secure them in place. It's the same using a "half amp charger" to keep a system that's consuming 2-3 amps charged. At best all you'll be doing is providing storage for a "too small solar system on the roof".... __________________ John 2015 F250 6.7l 4x4 2014 Cougar X Lite 27RKS