HULK 4X4 40 Amp 12V / 24V DC to DC Dual Battery In-Vehicle HU6540 Charger with Solar




HULK 40 Amp 12V / 24V DC HU6540 DC to DC In-Vehicle Dual Battery Charger System + Universal Wiring Kit.

The Hulk 12 Volt 40 Amp is a fully automatic 6-Step In-Vehicle or Under-Bonnet DC to DC charger, designed to keep your auxiliary batteries fully charged to their optimum level whilst driving or with solar panels when vehicle is parked. The HU-6540 is rugged and also suitable for installation in marine applications. 


  • Automatically selects the input: Alternator, Solar, DC based on active input with no manual switching required
  • Ignition connection allows low input selection and Solar MPPT regulator allows to work with 12V, 18V or 24V Solar Panels
  • 7 Stage Multi-Chemistry Switchmode charging provides charging for all standard Lead-acid, GEL, AGM, Calcium and Lithium auxillary batteries
  • Dual charging modes enables to work with fixed voltage (standard 12V or 24V alternators) and variable voltage alternators (smart)
  • Wide voltage input of between 9 - 42 Volt provides an option of charging from both 12V and 24V vehicle systems
  • Using the temperature sensor, continually adjusts its charge rate to suit battery temperature protecting it against over-charging and over-heating
  • Can be connected in parallel to provide more output when using high output alternators
  • IP67 Rated, sealed against dust or water ingress and safe to operate in -20°C to +85°C

What's Included in the Universal Wiring Kit ?

  • 6m Twin Core Double Insulated BLACK + RED 6 B&S 125A Rated Battery Cable
  • 2 x MIDI Fuse Holders with Cover (6mm Bolt Points)
  • 4 x 60A MIDI Fuses
  • 4 x 16-6 Cable Crimp Lugs
  • 4 x 16-8 Cable Crimp Lugs
  • 4 x BLACK Heatshrink
  • 4 x RED Heatshrink
  • 3 x Cable Joiners & RED Heatshrink
  • 2 x Battery Terminals
  • Pack of Automotive Cable Ties
  • 1 x 10A Mini Blade Fuse with Tap In Fuse Holder
  • 1 x 4m x 4mm RED Automotive Wire Cable
  • 2 x GREEN Anderson Connectors

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