? size solar panel
Folks: We would like to use a 12v deep cycle battery for topping off our 2 laptops, 2 kindles and cell phones. What size solar panel would be needed to keep the 12v battery charged/topped off. ...
Forum Discussion
dtappy3353 wrote:What's wow?
WOW....
I have 120 watts of solar feeding 2 12v deep cycle batteries on the fifth wheel which seem to maintain a 55-60%. We only use LED light bulbs with only one light on for the entire evening till we go to bed.
I'm hoping I'm clear and forgive me if I'm not.
We ONLY wish to recharge laptop battery with a 12v that has a trickle charge on it. How many watt solar panel would it take? We spend most of the time in AZ. Oregon doesn't factor in on this equation.
If you are already getting down to 50 percent charge you already need more power. At least one more panel at 120 watts and probably two to make life easier and to include the laptop.
Too many variables on power usage and solar production to give a precise calculation. Typical laptop is 75 watts and solar is about 5 hours per day. So if you run the laptop 5 hours and have a 100 watt panel it will be close to even.
If you pass through So Cal on the way to AZ you can stop in Norco and pick up some panels at a good price. Call ahead to verify inventory.
https://www.solarblvd.com/product-category/solar-panels-systems/12-volt-solar-panels/
