Most Auxiliary Battery
Installations utilize a small space usually available under the
bonnet. In my case, the space in the Mazda BT50 would only
accommodate a 85AH battery, which really is too small to do the job
properly. So instead I used the space available in the back, beside
the Drawers, to house the 125AH AGM Battery.
A battery tray was bolted to the
the floor of the tub and the battery secured. I then made a Battery
Box to fit the available space, in which I fitted a REDARC 1225 BC-DC
Charger. I chose this model, as it has a built in MPPT Solar
Controller, which is very efficient.
Rhino Racks were fitted to the
roof of the BT50 and a 120W Solar Panel fitted. It is wired to the
REDARC 1225 via a relay, which automatically switches between the
available charging source...the Alternator while driving and the
Solar Panel when stationary. A separate Anderson Plug (red) was
fitted to accommodate a portable, 120W (unregulated) Solar Panel, for times when
the vehicle is parked in the shade.
All this is in addition to the two 130W Solar
Panels we have on the roof of the van, charging our 120AH House