You've got panels on the roof and batteries in the shed. What you don't want is a controller that throttles down in January heat because it's cooking itself, or one that can't handle the swing between lithium and SLA chemistry. This 60A MPPT charge controller covers both battery types, tracks maximum power point so you're not leaving amps on the table, and has a built-in fan to keep running when the sun's doing its worst. If your current setup is a 30A PWM unit and you've outgrown it, this is the step up that actually keeps pace with your array
