Goalzero Guardian 12v Plus Charge Controller

The Goalzero Guardian 12V Plus Charge Controller is ideal for off-grid enthusiasts, campers, and small solar system users who require efficient battery charging and protection in remote treks and travel.

Supporting various 12V lead-acid battery types including AGM, gel, flooded, calcium, and LiFePO4, it features multi-stage PWM charging with bulk, absorb, float, and low voltage recovery stages to maximize battery life and performance. Equipped with multiple safety features such as reverse polarity, temperature compensation, and overcurrent protection, it seamlessly integrates with Goalzero Boulder and Nomad solar panels. This controller ensures reliable energy management for 12V systems with up to 90W solar input.

Key Features

1. • Multi-stage PWM charging with bulk, absorb, float, and low voltage recovery stages

   • Compatible with 12V lead-acid batteries: AGM, gel, flooded, calcium, LiFePO4

   • Solar input voltage range: 15-20V, max 6A (90W)

   • Integrated temperature sensor for battery temperature compensation

   • LED indicator to show charging status and power operation

   • Protection features: reverse polarity, overcurrent, short circuit, overvoltage

   • Two solar input ports (8mm and 4.7mm) for flexible solar panel connections

   • Compact and durable design with IP65 water resistance rating

   • Goalzero brand reliability with dedicated design for 12V off-grid solar systems

   • Enhanced battery health management through advanced multi-stage charging algorithm

   • Compatible with multiple battery chemistries, increasing versatility for various setups

   • LED indicators providing clear charge status for user convenience

   • Rugged construction suitable for harsh outdoor conditions and travel

Technical Specifications

• • Battery system: 12V lead-acid types including AGM, gel, flooded, calcium, LiFePO4

  • Solar input: 15-20V, max 6A (90 Watts maximum)

  • Charging stages: Bulk, absorb, float, and low voltage recovery

  • Protection: Reverse polarity, overcurrent, short circuit, overvoltage protection

  • Operating temperature: -25°C to 50°C (-13°F to 122°F)

  • Dimensions: Approx. 15.5 x 9.9 x 2.6 cm (6.1 x 3.9 x 1.0 in)

  • Weight: Approx. 500 grams (17.6 oz)

  • Water resistance: IP65 rating

  • Includes charging output cable with alligator clips

General Tech Specs 

• Charge Controller: Built in PWM Lead-Acid controller with 3 charging stages: bulk, absorb, float and two pre-stages for low voltage recovery.
• Power LED: Power’s green when a solar panel (or other power source) is connected.
• Battery LED: Indicates battery connection and charge status
• Solid Red: Battery fault (replace battery)
• Fast red blinking: Battery in low-voltage recovery (<10V)
• Slow red blinking: Battery in low-voltage recovery (10-11V)
• Slow green blinking: Battery charging 0-50% (bulk stage)
• Fast green blinking: Battery charging 50-95% (absorb stage)
• Solid Green Light: Battery full 95-100% (float stage)
• Beeping: Low Battery Warning (add input power)
• Solid Green/1 Red Blink: Failed to charge above 50% within 8 hours since start of Bulk Stage
• Solid Green/2 Red Blink: Failed to charge above 95% within 4 hours since start of Absorb Stage
• Solid Green/3 Red Blink: Failed to charge within 14 hours since battery started charging

Ports 

Solar Port (8.0 mm input): 15-20V, up to 6A (90W)
Solar Port (4.7 mm input): 15-20V, up to 6A (90W)
6mm Port (6.0mm output): 11-14V, up to 6A (90W max)