Very useful for confinement:
Really this switch saved your battery. If your car is old or very basic, then it is useful to use it so that it doesn't completely drain your battery during long periods of inactivity.

It's very handy:
In winter, when batteries suffer the most, it is very practical, as it disconnects the battery from the car's mains and conserves current to be able to start after weeks or months without using the car. At the same time it serves as an anti-theft device, since without closing the switch the car will not start.

How is connected the disconnector of battery for car?
Usually it is put in the negative, you connect your cable to the current cutter directly as if it was to the battery, and then the set of the cable plus the current cutter to the battery.
You disconnect the NEGATIVE (-) of the battery and insert the device, if you loosen the green handle the battery is disconnected from the circuit, which avoids the discharge when you leave the vehicle without using it for a while.

Features:
1.6V-24V 125 Amp car switch linkage.
2.To turn on the power, simply squeeze the green knob.
3.Loosen the green knob to disconnect all power.
4.This battery terminal with disconnector is suitable for 15-17mm
negative battery.
5. Rust and corrosion resistant, durable for safe use.

Specifications:
Quantity: 3pcs battery shut off switch
Material: Zinc alloy
For 6V to 24V battery systems
Rated current: 125A
To fit battery cell head: 15-17mm

Package Included:
3 x battery disconnect switch top post