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Blue Apple Thumper has introduced a whole new line of Heavy Duty Battery Boxes to its expanding range of power products.

The Thumper Elite Portable Battery Box dual battery system is a great affordable way to have a second battery in the rear of the vehicle. The Elite model is packed with accessory sockets and is the perfect setup for a portable dual battery system.

Included is a Thumper Redback Extreme 120ah AGM Deep Cycle, with this you can power a 40Ltr – 60Ltr fridge for up to 4 days without charging.  

This battery has no memory so charge times can vary but a full charge from dead flat will normally take approx 4 hours depending on the vehicle. 

The Dual Battery System includes the 140Amp Volatge Sensitive Relay Isolator kit.  This includes a 140Amp VSR Isolator, 50Amp Auto Circuit Breaker and a 6Mtr 6mm twin cable with a 50amp Anderson plug. 
This In Car Charging Kit is very effective in charging the auxillary battery in a wide range of vehicles on the market today.




Blue Apple Thumper has introduced a whole new line of Heavy Duty Battery Boxes to its expanding range of power products.

This unique battery box design is packed with numerous features and outlet sockets to accommodate for every individual. Please feel free to browse our range for a battery box that will suit your application.

This particular listing is for a battery box including: 

4 x Marine grade Cigarette type socket – rated to 16 Amps
Includes rubber cap design to protect all sockets.

1 x Merit type socket – rated to 15 Amps
Includes rubber cap design to protect all sockets

1 x Dual USB adaptor
– rated to 2.5 Amp 5 volt 

3 x 50 Amp Anderson connectors
(one fitted to front of box and one on rear)

1 x LCD Digital Volt meter gauge
Allows for accurate voltage reading of your battery (3volt ~ 30 Volts)

1 x Hold down push button switch
– used for Volt gauge

1 x 30 Amp Automatic reset circuit breaker
– Controls all outlet sockets inside the Battery Box

1 x 50 Amp Automatic reset circuit breaker
– Control both 50 Amp Anderson connector on front & rear

– All internal cabling to allow you to simply connect straight to the battery terminals

Internal Dimensions of Battery Box
Length – 330mm
Width – 175mm
Height – 225mm

External Dimensions of Battery Box 
Length – 410mm
Width – 260mm
Height – 280mm
* Dimensions includes all protruding outlet sockets * 


R.R.P $ 239.00

  • Maintenance Free
  • Leak Proof
  • Rapid recharge rate due to a low internal resistance
  • Can reach full recharge within 2 – 3 hours from alternator
  • Excellent standby use
  • Excellent long term storage
  •  Heat resistant
  • Vibration resistant due to bonded element design

The Thumper Redback has a self discharge of less than 5 % per year

(wet cell batteries discharge approx 3 – 4 % per week)

Maximum discharge current – 1250 Amp 5 seconds

Maximum charging current – 36 Amps

Float charging voltage – 13.6 – 13.8 Volts @ 25⁰C

Heavy Duty ABS case suitable for under bonnet use

  • Completely sealed – can be mounted on any side
  • Can be mounted in sealed compartment
  • Under bonnet use
  • Superior discharge ability compared to a wet cell
  • High CA output
  • Up to 5 times faster recharge than a wet cell battery
  • Full 2 year manufacturer warranty!

Discharge Rate                  Ah Capacity

20 Hour Rate                        128 Ah

10 Hour Rate                        120 Ah

5 Hour Rate                        104 Ah

1 Hour Rate                          85 Ah

If you are in the market for an Extreme deep cycle then look no further then the Redback Extreme AGM!

This heavy duty AGM battery is the perfect option for the use in Caravans, Motor homes, Camper trailers or even as a second under bonnet battery.

The Redback Extreme takes the technology of an AGM battery to a whole new level! Built with heavier internal lead plates, this battery is designed for continual discharge for heavy draw appliances. Its bonded element design allows for strength against corrugated or rough terrain, making it vibration resistant and the perfect choice for an off – road battery!

Whilst the Redback Extreme is not designed as a primary cranking battery (like the Thumper Redback hybrid), it does still hold the capacity to start up to a 10Lt diesel engine. The Extreme is designed as a secondary battery rather than a primary starting battery. The perfect combination for an under bonnet dual battery system would encompass the Thumper Redback (either 100 Ah or 120 Ah) as the starter battery and the Redback Extreme (either 100 Ah or 120 Ah) as the secondary battery.

Due to design of the heavier internal plates within the Extreme battery, it allows for rapid discharge and recharge of heavy draw appliances to be continually used.

Due to the internal characteristics of the battery, the Redback Extreme will allow for longer life over that of a standard AGM battery. 

Weight – 32.5kg

Length – 330mm

Height – 220mm

Width – 175mm

2 Year Warranty Weight – 32.5kg

Weight 36 kg
Dimensions 63 × 34 × 34 cm


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