DISCOVERY 3 Dual Battery Kit  D3-AS is $285.00

There are no other types of Discovery 3 Dual Battery kits that offer anywhere near the operating and charging advantages that our D3 kits achieve.

The D3-AS is the standard Cranking Battery to Auxiliary Battery Plug-N-Play kit, specifically produced for a Discovery 3 and early model Range Rover Sports.

Because of the unique way the SC80 operates, once this kit is installed, the auxiliary battery will actually assist in charging thecranking battery and within a few weeks of installing this kit, depending on your driving habits, your cranking battery will be raised to and maintained at a higher State of Charge.

This feature of being able to increase the charged state of your cranking battery from your Auxiliary battery, while the D3 is parked, is by far the single biggest advantage offered by using any of the SC80, DT90 or USI-160 kits.


Again, with the unique way the SC80 operates you can connect solar panels ( via a solar regulator ) or a battery charger to either battery in an SC80 dual battery set up and all batteries will recharged.

See full details of how the SC80 operates and it’s unique features, on the SC80 page.

The kit includes the pre-wired SC80 isolator & In-Line Circuit Breaker, Genuine Land Rover Battery Bracket and Hold Down Bolts, a Set of Battery Terminal Clamps, Auxiliary Battery Earth Cable and all necessary Hardware to complete the installation. All you need is the Optima D34 Yellowtop Auxiliary Battery.

All cabling has been cut to the correct lengths and all Heavy Duty Terminals have been pre-assembled, along with Heat Shrink and Split Tube protection, so there is no need for any special tools when fitting one of these kits.

The kit has extensive installation and operating instruction, which include numerous photos to assist in making the installation easy for DIYers.

You only need some basic Handyman Tools to complete the installation.

This kit takes about 30 to 45 minutes to fit. There are no holes to drill, No cables to cut. Everything is assembled and ready to install and the price includes Australia Wide Postage.

All our isolators are supplied with a 5 year Parts and Labour warranty and a Lifetime Repair Guarantee.