SG-4 Morningstar PWM Solar Charge Controller 12V 4.5A SunGuard

Morningstar SunGuard SG-4 PWM Solar Charge Controller

Simple, reliable, and built to last — the Morningstar SunGuard SG-4 is the go-to charge controller for small solar applications. Designed for 12V systems up to 4.5A, it protects your battery from overcharge and over-discharge without any setup or programming required. Whether you're maintaining a remote cabin battery, powering a gate opener, or keeping a boat battery topped up, the SunGuard just works.

Key Features

• 4.5A PWM charge control — reliable battery protection for small 12V solar systems
• Self-regulating design — no programming or adjustments required
• Overcharge and over-discharge protection — extends battery life automatically
• Ultra-compact housing — fits in tight spaces, easy to install anywhere
• Sealed, weatherproof enclosure — suitable for outdoor and remote installations
• LED status indicator — simple visual confirmation of system status
• Compatible with sealed, gel, and flooded lead-acid batteries

Specifications

• System voltage: 12V
• Max charge current: 4.5A
• Charge regulation: PWM
• Self-consumption: <1mA
• Operating temperature: -40°C to +60°C
• Enclosure: IP32

Ideal For

• Remote cabin and cottage battery maintenance
• Gate openers, security cameras, and small remote loads
• Marine battery maintenance from small solar panels
• RV and trailer battery trickle charging
• Lighting and small off-grid 12V systems

Ships from Thunder Battery — Canada's trusted Morningstar dealer.