Thumper Extreme 105 AH AGM Battery

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Package: EXT105 (no extras)
Sale price$325 Regular price$419



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 105 Ah or 120 Ah) as the starter battery and the Redback Extreme (either 105 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. 
  • 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 - 1100 Amp 5 seconds

Maximum charging current - 30 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                        105 Ah

  10 Hour Rate                        100 Ah

    5 Hour Rate                          94 Ah

    1 Hour Rate                          73 Ah


Weight – 29.5kg

Length – 305mm

Height – 220mm

Width – 175mm

2 Year Warranty

R.R.P $ 419.00

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Customer Reviews
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Filter Reviews:
Shane B.
Australia Australia
I recommend this product

AGM Battery

The batteries are great and service is very efficient

Australia Australia
I recommend this product

Thumper Extreme is the best

Very helpful and great service with on time delivery

Australia Australia
I recommend this product

Purchase & service

Great service and delivery was on time

Bob R.
Australia Australia
I recommend this product

Thumper battery

I've purchased 6 previous batteries since 2010. This is the first replacement battery. All of the others have been moved on with the camper trailer or boat they were installed in. This replaced a 2014 purchased battery.

Steve C.
Australia Australia
I recommend this product


Ordered online 11am delivered by 11am the very next day. That’s great service from in a Covid year. Well done home of 12 volt