Sand Man (SA) replied:

Have you considered a portable battery system?

Something like the Blue Apple Thumper 75 A/H Portable Battery System and 20 amp In-car Charger can be bought as a kit including the heavy duty cable, fittings, patch cable and the pair of control units. Simply connect one controller to the positive battery terminal and install the other controller in the rear of the cab, or tray area. This controller has an Anderson connector which plugs into the battery pack via the "patch cable"

Because the battery pack is an AGM style, it can be placed at any angle you wish and will not spill, or create noxious gases.

If you have a need for 12 volt power at your camp site, or inside your tent/camper/caravan, you are not restricted by the length of a 12 volt cable.

And last of all, you have an excellent jump starter unit for emergencies. Will jump start just about anything you connect it to. The jump starter leads also come with the complete kit solution.

Cost is comparable to a conventional fixed dual battery installation.

Derek from Affordable Batteries & Radiators replied:

Hi Wantago

You have 2 options in Universal Dual Battery Systems, The 'Joey' 55 a/h portable UDBS and The 'Flyer' 100 a/h portable UDBS.

I would normally make the new under bonnet battery the cranking one and their is a 520 cca one that fits perfectly. You then fit a big auxillary battery to the old cranking spot.

The UDBS is becoming very popular and fitted with AGM batteries and automatic isolators they work the same as a fixed system.

Here is a picture of the new cranking battery under bonnet.



Regards Derek.