10A–100A PWM Solar Charge Controller — 12V/24V, LCD & Dual USB

A solar charge controller is the part that stands between your panels and your battery bank, and this one keeps that job simple. It takes the power your panels make, feeds it to your 12V or 24V battery at the right voltage, and shows you what is happening on a clear LCD display. You do not have to go off-grid to get value from it: a small panel-plus-battery setup with a controller like this can run lights, charge devices, and trim the power you pull from the grid during the day.

Pick the size that matches your array. The 10A version suits a small panel keeping a single battery topped up, the 30A version covers a modest cabin or RV setup, and the 100A version handles a much larger array. Because the controller detects 12V or 24V battery voltage automatically, there is no voltage switch to set — choose your amperage and wire it in.

What you get

• Automatic 12V/24V battery voltage detection, with a maximum solar input of 24V on a 12V battery and 48V on a 24V battery
• Amperage options of 10A, 30A, and 100A, so the controller matches your panel array instead of the other way around
• LCD display showing battery voltage and charge status at a glance
• Dual USB ports for charging phones and small devices straight from the system

Where it fits in your system

Panels connect to the controller, the controller charges the battery bank, and an inverter turns battery power into household AC when you need it. If you are still choosing panels, start with our solar panels and kits range, and pair the controller with storage from our LiFePO4 batteries. Unsure whether PWM is right for you? Read MPPT vs PWM solar charge controllers before you buy.

Frequently asked questions

What battery voltages does this controller work with?

It works with 12V and 24V battery systems, detecting the battery voltage automatically.

Which amperage should I choose?

Choose a controller rated above the total current your panels can produce, so the controller is never the bottleneck. A small single-panel setup suits 10A, a modest cabin or RV array suits 30A, and a large array needs the 100A version.

Does it work if I am still connected to the grid?

Yes. You do not have to be off-grid to save with solar power. A panel, controller, and battery setup can cover part of your daytime use and cut what you buy from the grid, even while the grid stays connected.

Every order ships free across the US with 1–2 week delivery and 30-day returns — see our shipping policy and refund policy.