Solar chargers for Two 12 volt batts
Hi im in the market for a solar panel trickle charger for two 12 volt batteries on my hauler. I have an attitude 27 cbg and it came with the option of getting a 10 watt solar panel which i didnt get.....
Forum Discussion
Hi,
30 watts per 100 amp-hours will recharge the bank when the rv is in storage. In use it would not even keep up to parasitic loads, such as the gas valve on the fridge.
Here is a simple flow chart.
Budget-->Energy Audit-->Battery bank size-->number of watts-->PWM or MPPT.
Here is a link to the rather special spreadsheet that N8GS has created to help size solar battery charging systems!
Solar Spread Sheet N8GS
30 watts per 100 amp-hours will recharge the bank when the rv is in storage. In use it would not even keep up to parasitic loads, such as the gas valve on the fridge.
Here is a simple flow chart.
Budget-->Energy Audit-->Battery bank size-->number of watts-->PWM or MPPT.
Here is a link to the rather special spreadsheet that N8GS has created to help size solar battery charging systems!
Solar Spread Sheet N8GS
