ROCKSOLAR 30A PWM Solar Charge Controller
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ROCKSOLAR 30A PWM Solar Charge Controller
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What it is, and what it is for
ROCKSOLAR 30 A PWM Solar Charge Controller
A 30 A PWM controller for a 12 V or 24 V battery with two USB ports on the front, for a camp, cabin or shed setup where you want to charge a phone straight from the controller. It takes 12 V-nominal panels up to about 400 W at 12 V.
PWM is the simple, low-cost way to regulate charge: the controller connects the panel to the battery directly and pulses the connection. It cannot use any panel voltage above the battery voltage, so keep to 12 V-nominal panels; for a larger array or higher-voltage panels an MPPT controller harvests 20 to 30 percent more.
Connect the battery first, then the panel, then any load. Fuse the battery side, and have a licensed electrician make the connections on a permanent installation.
Published before you buy. No email required.
Every number, by component.
The figures the manufacturer publishes. The datasheet above is the reference if the two ever differ.
| Rated charging current | 30 A |
|---|---|
| Nominal system voltage | 12 V or 24 V |
| Charging | 3-stage PWM |
| Battery types | Lead-acid, gel and LiFePO4 |
| USB output | 2 × 5 V, 2.5 A max combined |
| Display | LCD with charge and battery status |
| Protection | Short circuit, open circuit, reverse polarity, overload |
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