Quote:
Originally Posted by ol trunt
I would recommend that you pose that question to the mfg rather than your fellow skoolies. Even if you can double dip what will doing so do to your product warranty etc.
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I completely agree here. The manufacturer would be your best "first line" source of a good answer.
But, I'll try a second-grade answer. No, they won't work right. As each sends current into the battery bank, the resulting voltage rise will cause charge issues. If one's charging, the other will read something other than the real battery bank voltage (because one is raising that voltage due to charge current). You'll end up with dual, competing systems each coming on then turning off. I've encountered this with off-grid wind and solar hybrid systems...the same concept, though...two different charging systems feeding one battery bank.
On a related note: Are you locked into a 24V battery bank? There's really very little advantage to using something other than a 12V system in a 12V bus/motorhome.
EDIT to add some clarification: A higher voltage battery bank does mean lower current between the battery bank and the devices which turn that battery bank power into usable power. If you happen to have a bunch of 24V DC appliances, then you're all set and a 24V battery bank is just dandy. But normally, we find either 12V DC appliances or 120V AC appliances. A 24V battery bank would allow smaller diameter cables between the batteries and the inverter, but that run is (or should be) short and once the inverter's spitting out 120VAC the battery bank voltage is irrelevant. And if you have a 24V battery bank you need a converter to change 24V DC to 12V DC. Normally, I don't find any compelling reason to go with anything other than a 12V system in a vehicle.