Automatic dual-battery protection for 24V rigs, no dashboard switch required.
The REDARC Smart Start SBI is a voltage-sensing battery isolator built for 24V systems running a start battery alongside an auxiliary bank. It watches system voltage and connects the two batteries only once the alternator is charging, then drops the auxiliary out when voltage falls, so your engine battery is always protected for the next start. It suits work trucks, larger 4WDs and heavy-duty touring builds wired at 24V.
- Voltage-sensing operation connects and isolates automatically, with no manual switching to remember.
- Rated at 100A continuous, giving headroom for larger auxiliary banks and accessory loads.
- Fully sealed housing suits engine-bay and under-bonnet mounting in a dual battery system.
Note: this is the 24V variant, so confirm your build is 24V before ordering. Most touring rigs run 12V and need the 12V version instead. For a charge-managed alternative, compare a DC-DC unit in DC-DC chargers.
| Specification | Detail |
|---|---|
| Type | Voltage-sensing battery isolator (SBI) |
| System voltage | 24V |
| Continuous rating | 100A |
| Operation | Automatic connect/isolate |
As an authorized REDARC dealer, it is backed by the full manufacturer warranty.
Presented by Overland Kitted
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