12V battery disconnect switch, simply turn the switch to disconnect the battery quickly and safely. Car battery disconnect switch made of pure copper material, they fit very well with the battery terminals, are easy to undo and do not accumulate any oxidation. Universal battery disconnect switch suitable for 12V and 24V battery voltages. The small size does not take up space. Do not disconnect the switch from the power supply while the engine is running, as this may damage the vehicle's electronics, especially the alternator. The battery disconnect switch is suitable for the negative pole of the battery from 16 to 17 mm. Ideal for boats, trucks, cars, RVs, motorcycles and more.