ARB Slimline 100Ah LiFePO4 battery with 40A DC-DC charger
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ARB Slimline 100Ah LiFePO4 auxiliary battery with integrated 40A charger
Looking for a compact, high-performance auxiliary battery for your 4x4? The ARB Slimline 100Ah LiFePO4 battery is the ideal solution. Designed for off-road adventure enthusiasts, it provides reliable power for all your electrical accessories without the risk of draining your vehicle's main battery.
Power and capacity tailored to your 4x4 needs
With its 100Ah (1280Wh) capacity, this battery provides enough energy to power your power-hungry equipment such as a Fridge laptop, a 2000W coffee machine, or an induction stove. Its 200A discharge capacity for 20 minutes guarantees optimal power when you need it. You can even connect multiple batteries in parallel for more autonomy.
Key Features of the ARB Slimline 100Ah Battery
- Lightweight (16 kg) and durable Lithium Iron Phosphate (LiFePO4) battery
- Built-in 4-stage, 40A DC-DC charger for fast and safe charging
- Dual inputs: compatible with conventional and smart alternators, and solar panels
- MPPT function to optimize solar energy harvesting
- Easy monitoring via ARB mobile app to track status and alerts
- Replaceable output circuit breaker and soft on/off switch for safety
- Compact dimensions: 71.2 x 26.6 x 5 cm, easy to install
- 5-year manufacturer's warranty
Easy and secure installation
ARB offers specific mounting bracket kits tailored to your vehicle as well as universal wiring harnesses (sold separately). The integrated DC-DC system greatly simplifies installation and protects your primary battery.
What are the capacities of the ARB Slimline 100Ah battery?
This battery offers 100Ah (1280Wh) and can provide a 200A discharge for 20 minutes, perfect for powering your power-hungry electrical devices.
Is it compatible with solar panels?
Yes, thanks to its MPPT function and dual inputs, it optimizes solar charging and accepts both conventional and smart alternators.
How to monitor battery status?
You can track battery health and alerts via the ARB mobile app, for easy and efficient management.
What is the weight and dimensions of the battery?
The battery weighs 16 kg, with compact dimensions of 71.2 cm long, 26.6 cm wide and 5 cm high, making it easy to install.
What guarantees and securities does ARB offer?
It comes with a 5-year warranty, includes a safety on/off switch, a replaceable output fuse, and meets rigorous international standards.

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Just finished installing a Koni suspension lift on my 2025 4x4 Duster. Perfect and relatively easy to fit. Service from Xpert4x4 was excellent, delivery very quick to the UK. Watch out for the added Duty.
Nach anfänglichen bedenken und Recherche über die Firma, habe ich dann doch bestellt. Ich habe ein Rack für meinen Pickup gekauft und bin wirklich sehr zufrieden. Alle Fragen wurden mir in Vorfeld beantworten und dass innerhalb weniger Stunden!
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Ich kann es nur empfehlen.
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Iceco fridge
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The purchase was great! After a minor shipping issue, it was resolved very quickly. I would buy from them again anytime. :)
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