ROCKSOLAR 40A MPPT Solar Charge Controller
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From ROCKSOLAR
ROCKSOLAR 40 A MPPT Solar Charge ControllerA 40 A MPPT controller for a 12 V or 24 V LiFePO4 or lead-acid battery rated for 520 W of panels at 12 V or 1 040 W at 24 V: the typical RV roof a boat or a cabin with a fridge and lights. An MPPT controller tracks the panel's maximum power point and converts the surplus voltage into extra charging current which is worth 20 to 30 percent more harvest than a PWM controller most of it on cold bright days and whenever the panel voltage sits well above the battery voltage.Size the array by its electrical ratings not panel count: the stated panel-power rating is 520 W at 12 V or 1 040 W at 24 V.