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Re: Charging batteries using generator & MPPT charge controller
I am not sure I would use a PWM charge "series type" charge controller between a DC genset and a battery bank. Generators and alternators are pretty inductive, and a PWM controller can caus…1 · -
Re: Morningstar MPPT Charge Controller slow charge
With Vmp-array closer to 18 volts or less (remember that Vmp falls as the panels get hot in the sun), the mppt controller can really only operate like a pwm controller. With Vmp-array over 20 volts (…1 · -
Re: Overall Efficiency of MPPT Charge Controller vs. Inverter vs. Combo Units (Off-Grid)
As an example of why I suggest an overall conversion efficiency of an off grid AC power system is ~52% (charge during day, use power at night/during bad weather): * 81% derating of Vmp*Imp=Pmp for &q…1 · -
Re: Newbie ready to go off grid
I would suggest (as above) a small system with 2-4 "golf cart" batteries (~200 AH @ 6 volts per battery, very roughly 400-800 Watts of solar panels) and a smaller AC inverter (300 Watts or …2 · -
Re: What batteries for an off the grid system?
FLA batteries need maintenance about 1x per month (check electrolyte levels, add distilled water as needed) and need recharging 1 day per month (if not left on float charge). AGMs, no maintenance, mo…1 ·
