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Thumper Lithium 90 AH REDARC DC Battery Pack | Low Profile

The Thumper Lithium battery pack is a reliable, compact and lightweight alternative to the standard lead acid portable dual battery system.

Designed with the latest technology of Lithium LiFePo4 cells, the Thumper offers a fully sealed and maintenance free battery pack that can safely be used on any side.

Equipped with an internal Battery Management System (BMS), the Thumper Lithium offers safe charging and discharging with over temperature protection, under and over voltage cut off protection and internal short circuit protection.

The Thumper range of Lithium battery packs have a usable power of 95% capacity. At this point, the BMS system within the Thumper will shut down all power to the unit. In order to reset the BMS, an charge load must be connected to the battery.

Note: The Thumper Lithium 90 AH REDARC DC Battery Pack | Dual Battery is not suitable for Jump-Starting

The Thumper Lithium 90 AH – Redarc model has been designed to include a hardwired Redarc BCDC1225D. The 25 Amp DC charger offers the perfect charge rate from both vehicle and solar charging, programmed especially for use with Lithium batteries.

The DC charger is wired to two dedicated external 50 Amp Anderson connectors, labelled ‘alternator input’ for the vehicle charge and ‘unregulated solar input’ for solar use.

This unit is the perfect option for the serious off-road enthusiast or anyone looking to run their compressor fridge or other 12 volt appliances for extended times.

Offering an impressive 90 AH of power, this particular unit will allow the user to run the average 50Lt compressor type fridge for over 5 days! This is almost 60% better run time compared to its AGM counterpart!

Equipped with virtually every socket you would ever need, along with a precision digital gauge for monitoring, this unit is one of the best dual battery systems on the market today!

The unit is equipped with:

1 x Digital display screen 2 x 50Amp Anderson (Max 50A)

2 x Cigarette socket 1 x Dual USB socket (Min. 2.4A)

1 x Engel Fridge socket 1 x Merit type socket

1 x 2.1mm Input / Output 2 x Automatic circuit breaker protection

1 x Low Voltage override switch 1 x Anderson ‘Alternator Input’

1 x Anderson ‘Unregulated Solar Input’

Thumper Lithium 90 AH REDARC DC Battery Pack | Dual Battery

Product code BATL-90-LP-RD
Capacity 90 AH
DC Charger capacity Redarc 25 Amp BCDC1225D
Package Includes TUR-L (8mm) vehicle wiring loom
MAX Discharge 50 Amps
MAX Input charge 50 Amps
Dimensions 335L x 263W x 215H
Weight 12.8 kg
Warranty 3 years


The Thumper 90 AH includes the complete vehicle wiring loom (TUR-L) – 8mm wiring. The wiring loom is designed to separate the Thumper from the main starter battery when the vehicle ignition is off. It is recommended to still install this loom with models that are fitted with the DC charger.

The TUR-L charging loom has been equipped with an ‘ignition wire’. This ignition wire has been designed to work in conjunction with the Thumper models fitted with a DC charger and a ‘Low Voltage override switch’. This switch is designed for use with vehicles that have a low output voltage. By pressing the ‘Low Voltage override switch’, the switch will illuminate BLUE, and DC charger will begin to charge immediately when the vehicle is running. The DC charger will cease to operate as immediately when the ignition is OFF. This isolation occurs from the TUR-L and not from the DC charger at this point.

If the ‘Low Voltage override switch’ is not illuminated, then the DC charger will be allowed to operate as normal by voltage. This method allows the main starter battery from the vehicle to require a minimum of 13.2 Volts in order to activate the DC charger. When the vehicle is OFF, the main starter battery will need to reach a voltage of 12.7Volts before the DC charger will switch OFF and isolate.

Thumper Lithium 90 AH REDARC DC Battery Pack | Dual Battery

Average run – GUIDE

35 – 50Lt Compressor Fridge 0*C at 25*C Ambient Temperature

Capacity Lithium run time AGM run time
90 AH 135 HOURS 83 HOURS

Discharged to 90% capacity at 11.8 Volts Discharged to 80% capacity at 11.8 Volts

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