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
300W Solar Panel 12V to 110V/220V 3000W Pure Sine Wave Inverter Solar Power System Kit Battery Charger Complete Power Generation
Aliexpress UK
Built-in LED indication (lights up when VSR starts). 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
50W 100W Flexible Solar Panel Kit 12V Battery Charger Monocrystalline Cell Solar System Module For Home Camping Car RV Boat
Aliexpress UK
Automatically combines two batteries when charging and isolates the two batteries when not charging, which can widely used in 12v camper van trucks, caravans, and camping applications. When your engine is switched off, the relay will isolate your leisure battery(s) from your main starter battery.
eBay
110V/220V 6000W Inverter Solar Power Generation System Solar Panel 12V 30A Controller Complete Power Generation Kit Charger
Aliexpress UK
(1 BB1230 Charging Unit. All of the benefits of advanced charging without any of the drawbacks. 4) Current is NOT taken from the input battery and given to the output battery. Manual mode and regenerative braking mode allows you to override this.
eBay
450w 300w 150w solar panel aluminum frame 12v camper car battery charger kit photovoltaic panel system for home boat camping RV
Aliexpress UK
Manual on/off button allows you to disable the display to conserve power when needed. ➡️ Fuse box holder with 60A fuse. Install and start charging your leisure battery in just 30 minutes! No crimping, soldering, or guesswork required.
eBay
12v solar panel flexible 300w 240w 200w 120w 100w kit photovoltaic panel battery charger home system camper car roof balcony DHL
Aliexpress UK
With award winning Swedish technology, the dual input D250SE which has now replaced the D250SA with added. The D250SE uses patented technology so it’s safe for you and your vehicle’s electronics. It’s also IP65 classified.
eBay
48v lithium battery 58000mAh 1000w 13S3P Li ion Battery Pack For 54.6v 750W 1000W BAFANG Kit built-in 20A BMS With Charger
Aliexpress UK
Built-in LED indication (lights up when VSR starts). 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
Lithium Li-ion 18650 3.7V 4.2V Battery Charger Board DC-DC Step Up Boost Module TP4056 + MT3608 DIY Kit Parts
Aliexpress UK
Built-in LED indication (lights up when VSR starts). 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
Kit Solar Generator With 300W Panel Solar System For Home Complete 6000W Power Inverter 30A Controller Solar Charger Camping
Aliexpress UK