When your engine is switched off, the relay will isolate your leisure battery(s) from your main starter battery. So it does not drain your main starter battery and you will always be able to start your vehicle.
eBay
XTAR VX4 18650 battery charger AAA/AA 1.5V Li-ion /NH/LiFePO4 battery 20W fast charger with LED display Battery capacity tester
Aliexpress UK
Dual Battery Isolators also feature surge protection and a L.E.D indicator designed to alert the user when the unit is engaged. When your engine is switched off, the relay will isolate your leisure battery(s) from your main starter battery.
eBay
2024 Universal Mobile Battery Charger LCD Indicator Screen For Cell Phones With USB-Port Charger For Most Lithium-Ion Batteries
Aliexpress UK
When your engine is switched off, the relay will isolate your leisure battery(s) from your main starter battery. So it does not drain your main starter battery and you will always be able to start your vehicle.
eBay
PowMr MPPT 60A Solar Charger Controller 12V 24V 36V 48V Auto Lifepo4 Battery Charger Solar Panel Regulator Max PV Input 160VDC
Aliexpress UK
When your engine is switched off, the relay will isolate your leisure battery(s) from your main starter battery. So it does not drain your main starter battery and you will always be able to start your vehicle.
eBay
Newest For Milwaukee M12 10.8V 12V 3.0A Li-Ion Replacement Charger N12 48-59-2401 48-11-2402 Lithium-Ion Battery Charger
Aliexpress UK
Built-in LED indication ( lights up when VSR starts ). when charging and isolates the two batteries when not charging,which can widely used in 12v camper van trucks, caravans, and camping applications.
eBay
60V 5A Fast Charger 67.2V5A Charger For Wheelbarrow harley 16S 60V lithium Battery GX16 Connector with Fan Metal shell
Aliexpress UK
When your engine is switched off, the relay will isolate your leisure battery(s) from your main starter battery. So it does not drain your main starter battery and you will always be able to start your vehicle.
eBay
43.8V 5A charger LiFePO4 36V 5A smart charger with Aluminum shell fan LED light for 240W 12S 36V LiFePO4 battery
Aliexpress UK
When your engine is switched off, the relay will isolate your leisure battery(s) from your main starter battery. So it does not drain your main starter battery and you will always be able to start your vehicle.
eBay
Greenworks 8V Mini Grinder 52pcs 80W Electric Grinding Engraving Cordless Variable Speed Lithium Battery Power Tools USB Charger
Aliexpress UK
Dual Battery Isolators also feature surge protection and a L.E.D indicator designed to alert the user when the unit is engaged. When your engine is switched off, the relay will isolate your leisure battery(s) from your main starter battery.
eBay
DCB104 Li-ion Battery Charger 4-Port 2A Current For Dewalt 10.8V 12V 14.4V 18V 20V 60V DCB127 DCB105 DCB118 DCB112 DCB119 DCB102
Aliexpress UK