The REDARC Smart Start SBI24 100A is a 24V DC 100 Amps microprocessor-controlled, dual battery isolator designed to protect the start battery from excessive discharge while allowing the auxiliary battery to supply charge to non-essential loads.

The REDARC Smart Start® SBI24 is a dual battery isolator used to isolate the start and auxiliary batteries in a dual battery system. It’s a microprocessor-controlled smart battery isolator and will protect the primary battery from a low charge in the secondary battery so it won’t drain the primary battery, while allowing the auxiliary battery to supply non-essential loads. The SBI24 provides 24 volt DC incorporating 100A of continuous ratings.

The Smart Start SBI24 battery isolator is mostly used in commercial vehicle dual battery systems, it incorporates electronic components preventing the solenoid from generating high voltage transients. It’s used instead of a diode battery isolator due to the voltage drop associated with diode type isolation. It features sophisticated fault detection and LED indication of operation to warn the user of faults including over-voltage, voltage drop and excessive current draw conditions.