It can effectively protect and extend the service life of the car battery. Manual button can turn off; 120 seconds off, magnetic hold relay. [Easy to install] The power off switch adopts a negative connection to ensure stable performance.
eBay
Zigbee / WIFI 1 Channel Tuya Switch Relay 12V 24V 220V 230V Module Dry Contact NO NC COM Inching Timer for Light Motor Alexa
Aliexpress UK
1 Pcs Car Battery Isolator. (Battery Negative Column within 15-17mm). Connect the red wire to the positive pole of battery ，black wire to the negative pole of battery. Do not connect the positive and negative poles in reverse, or the motherboard may be burned.
eBay
433Mhz Wireless Remote Control Switch DC 12V 75V 30A High Power Relay Receiver 1000 Meters Remote ON OFF for Electric Device
Aliexpress UK
DC 32V Disconnecter Power Isolator 50A 100A 200A 300A Cut Off Rally Switch Kit For Car Motorcycle Truck Boat Car Battery Switch. This switch is easy to install. This switch can widely applied to car, motorcycle, truck, boat, camper, and etc.
eBay
FILN 19MM 20A 12V 24V 110V 220V LATCHING MOMENTARY Flat Ring Round Push Button Switch IP66 Metal Stainless Steel with 20cm Wire
Aliexpress UK
Car Battery Cut-Off Switch – 12V/24V Universal Disconnect Isolator. Type: Knob switch isolator. This universal battery cut-off switch is designed to safely isolate your vehicle’s battery, helping to prevent power drain and extend battery life.
eBay
RF 433Mhz Remote Control Switch Wireless DC 12V 1CH 10A Relay Receiver and 2CH Transmitter For Door Electromagnetic Lock
Aliexpress UK
Safety Protection: This waterproof switch enables the safe disconnection of the battery, unnecessary power drain during vehicle or boat idle periods. 1 Disconnect Switch. This simplifies the isolation and protection operations for the power system.
eBay
THC 15A 30A New Type Din Rail 2 wire Weekly 7 Days Programmable Digital TIME SWITCH Relay Timer Control AC 12V 24V 48V 220V 230V
Aliexpress UK
Simply Remove or Loosen Wheel To Disconnect Power. BATTERY QUICK DISCONNECT CUT OFF SWITCH. FITS ALL 6V, 12V & 24V BATTERIES.
eBay
CO LIGHT Wireless 6 Gang RGB Switch Panel Bluetooth App Control Box 12V 24V for Jeep 4x4 Offroad SUV RV Trailer UTV ATV Pickup
Aliexpress UK
ON/OFF Functionality: This 12V battery disconnect switch features ON/OFF positions with a rated current of 275A. Safety Protection: This waterproof switch can safely disconnect the battery, preventing excessive power consumption when vehicles or boats are idle.
eBay
3000M Long Range DC 9V 12V 24V 1 CH 1CH RF Wireless Remote Control LED Light Switch System,315/433 MHz,Transmitter + Receiver
Aliexpress UK
Protects batteries and engines and prolongs their lifespan. [Easy to Install] First connect the red wire to the positive pole of the battery. Then connect the black wire to the battery clip. 1x Battery Clip.
eBay
Weekly 7 Days Programmable Digital TIME SWITCH Relay Timer Control AC 220V 230V 110V DC24V 12V THC30 30A Din Rail Mount
Aliexpress UK