Description

PWM Solar Charge Controller 30A 12V-24

PWM (Pulse Width Modulation) solar charge controller regulates the charging current from your solar panels to the battery to prevent overcharging and deep discharge. A 30A controller is suitable for small to medium systems with panel power up to around 350–720 W depending on whether it’s a 12 V or 24 V system.

What to Check Before Buying

Voltage Compatibility

• Must match your system — 12 V battery or 24 V battery. Controllers usually auto-detect.

Panel Input Limits

• PWM controller max PV open-circuit voltage (Voc) often <50 V — panel Voc must not exceed this.

Battery Type

• Confirm support for your battery chemistry (lead-acid, AGM, GEL, or lithium). Some cheap models may not support lithium unless specified.

Actual Current Rating

• 30A rating means it can handle up to ~30 A charging current safely — size your panels accordingly. Too high input can damage the controller.

Typical features you’ll find on 30A PWM models:

1. System voltage 12V/24V/36V/48V automatic recognition;

2. Intelligent 4 stages PWM charging: Bulk, Absorption, Equalizing, Floating;

3. LCD display with Back-lighting shows device  operating data and working condition;

4. Humanized simple button operation; Adjustable charge-discharge control parameters;

5. Support more kinds of battery: Lead-acid battery (AGM, Gel, Flooded) and Lithium battery (LiCoMnNiO2, LiFePO4);

6. Multiple load control modes: 24Hours Working Control, Light Control, Light and Dual Time Control;

7. Automatic temperature compensation and accumulated function of charge and discharge KWH;

8. Double USB output 5V/2A;

9. Perfect electronic protections;

10. Warranty one year.