Replacing an inefficient Zamp solar kit with a Overland kitZamp solar kit Overland solar kit 6 volt batteries
Posted 02 June 2019 - 06:28 PM
275w is still very nice. i have 265 and am looking at 42w of power going into my batteries right now. my 130l truckfridge also has not been off since installed 30 months ago
2006 Silverado 3500 ext cab 8' bed LBZ, FASS, EGT delete, 5" exhaust, FTE Resonator, MotorOps 50 HP Tow Tune
2005 Hawk Shell built the way I like it - SOLD
2012 ATC Puma (Grandby) shell - build started!
Posted 03 June 2019 - 01:35 AM
I do have 3 (three) Overland Solar 160 watt panels on my roof for 480 watts. Yes they are more expensive, but... I like them.
I have noticed in rain that the battery is still being charged. I run them in parallel as the voltage I normal see is 28 volts. That is enough head room when it is cloudy and raining when less voltage is being produced to still produce some charging. Above 19 volts the MPPT charger can make something out of. But if your panel caps out at 20 volts when it is cloudy or raining it is not giving your controller much to make anything in return as it might be putting out 12-15 volts.
If I had multiple panels that were around 18-22 volts I would have wired them up in Serial to increase the voltage and sacrifice amps, this would do much better in low light conditions.
I have found these panels have been working out really good and have yet to use the trucks alternator to do any help charging. I do have the very inefficient Dometic 130 liter DC refrigerator. But I really like the large freezer space.
2015 FWC Hawk Flatbed
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