Forum Discussion
pianotuna
Mar 03, 2017Nomad III
Hi,
Below 400 watts I'd use PWM. I'd pick the Grape controller and use the money saved to buy an extra panel.
If you must have MPPT and do not plan to expand then the Tracer BN model is a good fit.
If you do plan ahead for expansion, buy a tristar 60 amp controller now. It will run more efficiently than the 45 unit.
If going MPPT get panels with lots of diodes and wire the panels in series.
Below 400 watts I'd use PWM. I'd pick the Grape controller and use the money saved to buy an extra panel.
If you must have MPPT and do not plan to expand then the Tracer BN model is a good fit.
If you do plan ahead for expansion, buy a tristar 60 amp controller now. It will run more efficiently than the 45 unit.
If going MPPT get panels with lots of diodes and wire the panels in series.
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