John & Angela wrote:
smkettner wrote:
I would guess most do not have a blocking diode but rely on a controller.
Probably going to need to contact some manufacturers directly.
Only seen diodes listed if it is designed as part of a kit to maintain a battery.
Agreed. We found a 48 volt inexpensive controller that should work. Coupled with a couple of 24 volt 20 watt panels the whole thing will come in around 130 bucks.
Yes but the typical 3 blocking diodes/panel won't help with shadows since this seems to be your requirement. When a blocking diode disables a panel section you lose that voltage and you could easily get below the charging voltage for the 48V battery. Now if you can find adequate voltage panels with say one diode per cell then the diodes can be effective.
