The Velleman PLUGC4F is a 4-in-1 cigarette lighter plug combined with a car battery tester. It plugs into a vehicle's cigarette lighter socket to give a quick check of the car battery. It is supplied in blister packaging. Key Features Velleman model PLUGC4F 4-in-1 cigarette lighter plug Built-in car battery tester Supplied in blister packaging Specifications Brand / model Velleman PLUGC4F Type 4-in-1 cigarette plug with car battery tester Packaging Blister pack SKU 16PLUGC4F What's Included1 x Velleman PLUGC4F plug / battery tester Ideal ForDrivers who want a quick way to check their car battery from the lighter socket. Frequently Asked QuestionsHow does a lighter-socket battery tester work?It reads the voltage at the cigarette lighter socket, which is fed by the car's battery, giving a quick indication of battery and charging condition.What are the four functions?The listing does not detail them; check the product packaging for the specific functions.
