Vehicle electrical systems are split between 12 V and 24 V nominal. A multi-volt driver regulates its LED current across the whole 9–32 V window, riding out the sags and spikes of cranking, alternator load-dump and long cable runs.
Why fleets standardise on it
One part number that fits every machine in the yard halves the spares shelf: distributors and fleet workshops stock a handful of multi-volt models instead of separate 12 V and 24 V variants. It also removes the failure mode of a lamp wired to the wrong system voltage.
Related protections to look for
Reverse-polarity protection (survives wrong-way wiring) and overvoltage protection (survives voltage spikes) usually accompany a good multi-volt driver. Every light in our LED work light range accepts 9–32 V DC with both protections built in.
Electric forklifts sit outside the 9–32 V window; see our forklift blue light vs red zone guide for the 10-48 V, 10-60 V and 10-110 V DC versions built for 24 V to 80 V traction batteries.
Shop related products
Related terms
A potted driver is a lamp’s electronic driver circuit fully encapsulated in resin (potting compound), protecting it against vibration, moisture and thermal cycling, the three killers of vehicle lamp electronics.
CISPR 25 (EMC for Vehicle Electronics)CISPR 25 is the international standard limiting electromagnetic interference (EMI) from electrical devices installed on vehicles. Emissions are graded from Class 1 to Class 5, with Class 5 the most stringent; the class is specified by the vehicle maker based on where the device is mounted. Tough Lighting lamps are built to Class 4 as standard, with Class 5 available on request.
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