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Here is a complete Dual Battery System package to suit the Toyota Landcruiser Prado 150 Series 2016 to the latest release model.

This is a different system to the earlier model Landcruiser Prado 150 Series as there was a few changes to this model such as the Battery Tray design and the inability to use a Diode Fuse to replace the ALT-S fuse in the fuse box under the bonnet.
Due to the Temperature Compensating Alternator we recommend the Projecta IDC25 Charger to give a full charge to the auxiliary battery.  In addition to this the Projecta IDC25 can be used as a solar MPPT regulator.  It has been designed to simultaneously charge from alternator and solar while driving.

The Thumper Extreme Heavy Duty Wetcell battery has been chosen for this system due to the weight.  It has been noted that the Landcruiser Prado 150 Series can be prone to the inner guard cracking when a battery that is not within the weight rating of the tray.  This rating is 25kg, as a NZ70 AGM battery weighs 28-32kgs it is up to the customer if he or she are happy to take the chance.

This battery size can be used to power a 12v Portable Fridge for around 3-4 days as well as LED camp lights.

Down the rear of the vehicle is a Accessory box with a volt meter and 2 sockets to power a fridge and 12volt accessories.


The Projecta IDC25 is the toughest and most advanced dual battery management system available on the market today.  While everyone else quickly released this new DC-DC technology a few years back,  Projecta were busy in research and development designing the Ultimate DC/Solar Battery Charger.

The IDC25 is simple to operate, designed with a Mode push button for battery selection for Gel, AGM, Wet or Calcium type battery.  The  IDC25 unit is also sealed to IP67 specs, so it can be installed under the bonnet if needed because the unit is dust, splash and shock proof.

The IDC25 can safely operate in extreme conditions up to 80°C, as found in engine bays in hotter climates.

A major feature of the Projecta IDC25 is that it has the latest synchronous switch technology.  The IDC25’s efficiency exceeds 94% at typical full load conditions, converting your vehicle’s 12V DC / 24V DC alternator power to a more complete charge and prolonging the battery life.  This means that the IDC25 will not load your vehicles alternator in order to charge your auxiliary battery at the desired voltage setting which is either  14.1V to 14.7V.

This will not affect the vehicle’s performance ( fual economy and engine performance) from installing the Projecta IDC25.

The IDC25 can be wired to the vehicle ignition, allowing it to operate only when the ignition is turned on.  This ignition connection also enables a “low input operation” mode, for compatibility with modern smart (variable voltage ) alternators.

An additional wire has been fitted to the IDC25 for driving an external L.E.D indicator, in-cabinfor example to remotely display charging and fault status.


Suits: Prado 150 Series 08, 2.8 Litre Turbo Diesel
(Not suitable for Kakadu Version)
Models: Auto/Manual
Years: Sep 2016 Onwards
Location: Engine Bay
Max Battery Size (mm): L300 x W174 x H220
Max Battery Weight: 23Kg
Suits Battery: N70

Max Battery Size (mm) L300 x W174 x H220
Max Battery Weight 23Kg
Recommended batteries Exide LCS27-97 & Century N70TMF
Approximate fitting time 1 hour
Recommended Dual P/No: IDC25
Battery System
Tray Location Engine bay, drivers side front


Thumper Extreme High Crank (EXT-HC)
Thumper have recently launched a new range of heavy duty cranking batteries; perfect for the off-road caravan and camping industry.

The “EXT-HC” (Extreme High Crank) hybrid battery is designed as a bonded element sealed lead acid; perfect for the use of everyday cranking as a primary starter battery. Whilst the marine nature of this hybrid battery offers heavy cranking ability, the battery is also the perfect choice for the use of a deep cycle alternative to that of an AGM.

The EXT-HC range is classified as a wet-cell Deep cycle.
The primary use of this battery would suit the following operations:
– Use in an under bonnet dual battery system as either the primary starter battery or as the secondary battery (for running fridges, etc)

– Use in the marine industry as a hybrid “starter” battery whilst also being used to run appliances such as GPS systems, fish finders, small fridges, etc.

– Use in Caravan / Motorhome / Camper Trailer where the battery is located in the boot / outside container or in a battery box on the frame of the vehicle.
It is important to consider the TYPE of battery you are choosing for both the application and environment in which it will be used. The EXT-HC range of batteries are not completely sealed, resulting in this model not being the best option for mounting within the enclosed cabin of a vehicle or under the bed within the Caravan or Motor-home, etc. Wet-cell type batteries do omit a small level of gasses when charging making them not ideal for enclosed and non-ventilated environments. Please instead look at the sealed range of AGM battery that Homeof12volt offer in the battery link on this website.
In stating the above, the use of the EXT-HC range within the boot of a caravan, under the bonnet of a vehicle and within the boat is perfect and completely safe!

The EXT-HC range of Thumper batteries include a 3 year nationwide warranty and are available in a number of sizes




Weight 30 kg
Dimensions 40 × 40 × 30 cm


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