Grape 40 Amp PWM Charge Controller versus ?
I often see recommendations for the Grape Solar GS-PWM-40BT 40 Amp PWM Solar Charge Controller. The Grape controller was recommended as a potential replacement for my Renogy 30A PWM LCD Controller an...
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I prefer an automatic adjusting absorption time. Fully charged in storage may only need 15 minutes of 14.5+ volts each day and while in use you may want 3+ hours of absorption.
