Is charge controller available for 120V DC system?

hmm, check with a company called solar converters, they do custom stuff. 

the bigger question is do you have a 120v nominal pv array?

james
altE staff

huh, what are you running, an exeltech?  i know they have inverters that can run at that voltage.  the reason there are not more high voltage battery systems is that the code prevents banks beyond 48v nominal in residential systems.

so if you do have a 120v nominal array, i dont know of any controllers, but solar converters does do customer gear.  the problem as i understand is that the internal components cant handle those voltages, specifically the FETs i think.  you are looking at 2oo volts open circuit before temp derations, so that may mean no go for a controller like that, but i dont know, it is pushing the boundaries of my knowledge.

james
altE staff