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
24pcs/lot Mixed Batteries Set AG1/AG3/AG4/AG5/AG10/AG12/AG13 for Remote Control Watches CR2025 CR2032Button Coin Cell 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
Seplos Mason 280Ah battery box 48V 14.3KWh LiFePO4 Lithium 200A BMS Rechargeable Batteries Pack DIY Kits Set Case With Cells
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
8 Slots 21700 Battery Case DIY Kit Mecha Transparent Quick Charge Flash Charger Battery Case Kit Power Bank Box Type C
Aliexpress UK
Suitable for most 12V charging systems- Surge protection. 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
8 Slots 21700 Battery Case DIY Kit Mecha Transparent Quick Charge Flash Charger Battery Case Kit Power Bank Box Type C
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
EU 15kwh 16kwh DIY BOX kit JK V19 BMS 48V 300Ah 51.2v 314ah lithium energy storage battery BOX Kit Energy storage battery box
Aliexpress UK
Suitable for most 12V charging systems- Surge protection. 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
20-50pcs LR44 Batteries AG13 Button Cell Battery 1.5V 357 SR44 LR1154 Button Coin Batteries L1154 Battery for Watch Toys Remote
Aliexpress UK
Maximum solar input current: 20A. 1 x 500mm RED 70amp READY MADE cable Relay to fuse holder lead. 2 x 250mm RED 70amp READY MADE cable from Battery to fuse holder lead. 2 x MTA MIDI Fuse holders. The kit includes everything you need for setup dual battery charging system .
eBay
Li-ion Battery Replacement Kit Charge Protection Circuit Board Repair Kit Parts for Makita 18V Battery BL1815 BL1860 LXT400
Aliexpress UK
135mm dropout 2000W rear wheel motor laced in a MTX. We use the MTX rims as they are renoun in the e-bike community for reliability, and being one of the most robust rims on the market for your rear hub motor.
eBay
Li-ion Battery Replacement Kit Charge Protection Circuit Board Repair Kit Parts for Makita 18V Battery
Aliexpress UK