SUNAPEX 20A solar charge controller front view for reliable 12V charging.
SUNAPEX LCD display shows real-time status and charge levels.
SUNAPEX Type-C and USB outputs for direct device charging.
SUNAPEX plug-and-play SAE connectors enable quick solar setup.
SUNAPEX zero battery drain technology prevents idle power loss.
SUNAPEX protection icons cover overcharge, overvoltage, reverse current, and short-circuit.
SUNAPEX 12V battery compatibility includes LiFePO4, Gel, AGM, and Lead-Acid.
SUNAPEX 4-stage charging supports bulk, absorption, float, and equalization.
SUNAPEX warranty and 24/7 support ensures confident ownership.

SUNAPEX

SUNAPEX Solar Charge Controller 12V 20A with Type-C & USB Output

High-performance patio lawn and garden made for confident daily results

$38.61

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Why customers choose Cera Garden

Compact, reliable 12V charging hub

Sunapex 12V 20A solar charge controller is designed to efficiently manage solar input from panels under 300W, making it a dependable core for small to mid-size off-grid setups. It is designed for 12V batteries only and is not compatible with 24V or 36V packs. Note: No polarity converter is included; connect the solar panel and battery with correct polarity.

Smart charging for real-world performance

The upgraded 20A PWM charging controller delivers more current than typical 10A designs, helping you maximize charging when sun is abundant. Its optimized charging algorithms move power from panel to battery with greater efficiency and intelligence.

  • Real-time status monitoring is shown on a refreshed LCD screen with LED indicators, so you can quickly gauge charging mode and battery state at a glance.
  • Pressing the status button reveals the current for about 5 seconds before the display returns to battery voltage.

Fast setup, minimal fuss

Plug & play with upgraded SAE connectors for a secure, quick connection. For best results, connect the solar panel first, then the battery, ensuring correct polarity.

The design minimizes idle power draw (zero battery drain) and includes diodes to prevent reverse current after sunset—keeping your battery ready for the next sunny day.

Power your devices and stay protected

Two outputs, Type-C and USB, let you power devices directly from the sun or your battery. A comprehensive protection system guards against Overcharge, Over-voltage, Reverse Current, Reverse Polarity, Short-Circuit, and Over-temperature.

Broad battery compatibility and smart charging

Compatible with a wide range of 12V batteries including Lead-Acid, Gel, AGM, and LiFePO4. The smart 4-stage charging sequence—Bulk, Absorption, Float, and Equalization—helps maintain battery health and readiness without overcharging.

Support you can count on

SUNAPEX provides 24/7 after-sales service and a one-year warranty to help you feel confident about your solar setup.

FAQ

Q: What 12V battery types does the SUNAPEX 20A solar charge controller support?

A: Supports LiFePO4, Gel, AGM, and Lead-Acid 12V batteries for versatile setups.

Q: Is this controller suitable for 24V or 36V systems?

A: No. It is designed for 12V systems and panels under 300W.

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