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Powerhouse 20A DC To DC Dual Battery Charger With Solar Input


This 20A dc to dc battery charger with solar input has been designed for in-vehicle use where auxiliary batteries are required to be charged from solar panels or the vehicles main battery. The charger offers fully automatic, set-and-forget operation, isolating the main vehicle battery when the engine is off, preventing discharge so you can still start your vehicle when required. The design prioritises solar charging when connected, providing lower load on your vehicle. It provides multi-stage charging for lead acid, AGM/Gel, Calcium, LiON and LiFePO4 battery types. The in-built solar charge controller accepts PV solar panels with an output voltage range of 16-25V.


  • Heavy duty aluminium case and mounting bracket
  • Microchip monitoring and control
  • Fully automatic high frequency multi stage charging
  • Pulse mode technology that reduces oxidation, evens electrolyte consistency and minimises temperature equating to longer battery life
  • Easy push button chemistry select: AGM/Gel, Calcium, LifePo4, Deep Cycle, VRLA and conventional flooded Lead-Acid batteries
  • Internal charger temperature monitoring and power output control
  • LED indicators showing state of charge
  • Over charging, short circuit and over temperature protection
  • Reverse polarity protection: Input reverse polarity protection and Output reverse polarity protection
  • Thermal overload protection
  • Solar input overload protection
  • Power cut memory function; once selected, the charger will remain on this battery type until it is changed


  • General
  • Type: Multi Stage
  • DC Battery Input: 12.5-16.0V
  • Solar Input: 16.0-25.0V
  • Output/Charging Voltage: 14.4 – 15.4 V (stops charging when alternator output or vehicle battery below 12.5V)
  • DC Output Current: 20A
  • Solar Output Current: 20A
  • Minimum Start Voltage: 2.5V – for battery being charged
  • Charge Control
  • Soft Start: Yes
  • Soft Charge Current: 20A
  • Bulk Charge Voltage: 14.7V (AGM/Gel), 13.5V (Lead Acid), 15.4V (Calcium), 14.4V (LiON)
  • Absorption: Constant voltage with automatic amperage control
  • Float Charge Current: 13.5V (AGM/Gel), 14.4V (Lead Acid), 13.5V (Calcium)
  • Float Charge Current: 100mA
  • Battery Range: 18-250Ah
  • Recommended Cable Cross-Section
  • 0-1 metres: 10AWG
  • 1-5 metres: 8AWG
  • 5+: 6AWG

Weight 1.089 kg


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