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Mighty Max 100 Watt Solar Panel 12V Poly Off Grid Battery Charger for RV (100w) 15 product ratings Popular Item 1 sold in last hour Item Information Condition: New Quantity: Limited quantity av...
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If you are recharging batteries with those panels... look for some panels that put out 17V instead of 18.2V, and to still make 100W claim, the amperage output is higher. Since your voltage needs to be dropped to 14.8V or 14.4V, depending on how you set up your PWM charge controller on these smaller 12V systems, the losses are less.
I much prefer getting the larger 150w 12v POLY solar panels for 12V. You will see honest 8.8 to 9 amps charging rates with them, actual, if the battery is low enough in charge when you start recharging in the morning. 5.5 Amps for a 100w panel is pretty low, IMHO. You want that current, the PWM charge controller needs the higher duty cycle, due to lower solar panel input voltage, without throwing voltage away, wasting it.
I much prefer getting the larger 150w 12v POLY solar panels for 12V. You will see honest 8.8 to 9 amps charging rates with them, actual, if the battery is low enough in charge when you start recharging in the morning. 5.5 Amps for a 100w panel is pretty low, IMHO. You want that current, the PWM charge controller needs the higher duty cycle, due to lower solar panel input voltage, without throwing voltage away, wasting it.
