Oct 26, 2010 11:49 pm
Re: Solar charger controller question??
hey marcin, looks like you have 4, 12v nominal modules (evergreen perhaps?). this makes 12, 24, or 48v system relatively straight forward. 25 batteries is not an even number, so something will have to happen there.
mppt charge controller will be the best charger available to you, but you have many cheaper alternatives. the mppt controller can potentially yield up to 30% more "juice", but if this is only temporary or emerangcy power then a pwm controller is a very viable option. i have a c40 and have had no problems with it. i got the optional display so i can see a little bit of whats going on. morningstar also has a huge selection at a reasonable price. i have never used their products hut have heard good things. i think displays are always good, unless you plan on having some other monitoring device ( like a trimetric battery monitoring). nice to know what is happening (or was happening).
try to pick an inverter or two that you like before you decide on a charge controller. some inverters have charge control features, others will affect your choice of charge controller (24v inverter with a charge controller that does not have a 24v option, etc...).