Go Power! PHANTOM 30A Dual-Source DC to DC and MPPT Solar Controller
Solar + Alternator Charging for Overland House Batteries
For an overland rig with a starter battery and a separate house battery, the Go Power! PHANTOM brings solar and alternator charging together in one 30A controller for supported vehicle battery systems. Use solar power when your panels are producing, and alternator power while driving. Its intelligent alternator-charging function boosts charging voltage to support charging an auxiliary battery bank.
In this kind of build, the house battery runs your camp loads while the starter battery serves the vehicle. The PHANTOM has a dual-input, dual-output design and supports 12V or 24V DC systems, but the exact battery connections, bank isolation and charging priority depend on the system wiring and configuration. Before installing, check the GP-PHANTOM manual and confirm compatibility with your battery chemistry and any separate DC-to-DC charger already in the build.
Key Features
- Combines solar and alternator charging for supported vehicle battery systems
- 12V/24V system voltage support
- 30A maximum charge current
- Dual-input, dual-output design
- Supports charging while parked with solar available or while driving from alternator power
- Intelligent alternator charging boosts charging voltage
- IP68 protection rating
- 5-year warranty
Technical Specifications
| Model | GP-PHANTOM |
|---|---|
| System voltage | 12V/24V |
| Battery voltage range | 8V–32V |
| Maximum charge current | 30A |
| Temperature compensation | -3mV/°C/2V; none for lithium batteries |
| Float charge (sealed default) | 13.7V/27.4V |
| Main charge (sealed default) | 14.1V/28.2V at 25°C, 0.5h |
| Daily boost charge (sealed default) | 14.4V/28.8V at 25°C, 2h; activates when battery voltage is below 12.3V/24.6V |
| Equalization charge (flooded batteries) | 14.9V/29.8V |
| Dimensions | 14.4 × 7.6 × 4.13in (366 × 194 × 105mm) |
| Weight | 1.38lb |
| Protection rating | IP68 |
| Warranty | 5 years |
Check Your Overland System Compatibility
Confirm your system voltage, battery chemistry, wiring layout and any existing DC-to-DC charging equipment against the PHANTOM manual and your battery manufacturer's requirements before purchase or installation.