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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The thing I don't like about all these Chinese controllers is that they're positive ground, which makes the load terminal (and its ability to shut down a load before the battery is over discharged) useless on an RV, where pretty much everything is negative grounded.
