Fitting Dual Battery system to your vehicle, specifically the Luna Porta Box.

Let us look at the popular National Luna systems available for your 4x4.

For more than 15 years, the Portable Power Pack (dubbed: The Grey Box) has served the 4×4 community and outdoor market as a mobile source of power as well as a stand-alone dual-battery system.

More recently, in 2017, Luna developed a stripped-down version of the Portable Power Pack, forgoing the dual-battery solenoid and opting for an affordable, customizable, Auxiliary Battery Box with an array of power outlets. Of course, it wasn’t long before the off-road community “renamed” our Auxiliary Battery Box ‘The Black Box’.

Surprisingly, instead of cannibalizing The Grey Box’s sales, the Black Box found its own market of value-seeking buyers wanting the ability to customize their power needs.

What’s more, the release of The Black Box quickly revealed yet another need in the 4×4 market. A select number of off-road travellers were now buying the National Luna 25A DC-DC charger, and bolting it to the outside of their The Black Box system.

The demand was clearly indicating a need for a mobile dual-battery system with the added benefit of a built-in DC-DC charger and the ability to connect solar energy.

The objective here was simple: Create a complete plug-and-play mobile power solution that offers:

  • A class-leading DC-DC dual-battery system
  • Plug & play solar input with 25A MPPT regulator
  • The ability to charge wet-cell, AGM and Lithium-Ion batteries
  • A wide range of power ports and connections
  • Automatic compatibility with 12V and 24V vehicle electrical systems
  • A dedicated external charger port
  • A remote monitor that displays information about the system (optional accessory)
  • The ability to operate in vehicles with intelligent alternators

So, if you’re looking for a portable power pack and dual-battery system that is solar-ready and effortless to install, look no further than Luna’s ‘Green Box’ – the most comprehensive mobile power solution they ever developed.

So, Luna developed our next portable-power solution: “The Green Box

All these dual-battery solutions are available at AFC Windhoek now.

Do not hesitate to contact us on Tel: 061-229633 or send an e-mail to