24 volt to 12 volt converter
Looking to run 600 watts of solar to my 40 amp MTTP controller at 36 volts. I have 4-6 volt batteries. So I need to get my 24 volt battery bank down to 12 volts to my Magnum 2012 inverter charger. ...
Forum Discussion
brulaz wrote:
That's where we're going. A couple of 12V 6x6 170W panels to supplement the 690W on the roof (and often in the shade around here). 1mx1m and 26# each, so portable, but about as big as I want to go for portable. Will run them in series and have one of those cheap Tracer MPPTs on order from China (BFL13 seems to like his).
BFL likes all of them. From $12 Ebay toys, to slightly better PWM to half-ars single-panel EcoW MPPT, eventually graduating to more-less substantial Tracer - still kinda 3-speed auto transmission of a 1950 Japanese cars, but close to real thing already.
Not that there is anything wrong with enjoying all things around you :)... I wish I could enjoy toying with it, unfortunately my priorities were to make electronics work, messing with it as little as possible (part of the reason was that my messing with these things wouldn't have resulted in anything good). Bought fully-featured 30A MPPT with warts and all - V sensing, remote T-comp, display, log, current-based and timer-based Absorb, online connectivity (that I don't need) etc etc. And called it a day. Cost me just about what Tracer 40 sells for on Amazon, if you add all the accessories. Wasn't as much enjoyment, but didn't contribute to heaps of electronic refuse either. I have to say though, that BFL ugly solar graphs (among other info on this forum) helped me a lot to get where I wanted to. Despite all the warnings from the authors that solar project can not be estimated, planned and executed like you normally do with everything else.
