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.
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HTRC New 400W Lipo Battery Charger DC 400W AC 200W RC Dual Charger Discharger For LiHV LiFe Li-lon NiCd NiMh Pb LiPo Battery
Aliexpress UK
Why choose us? The product is over 3000 times cycles which is much more than normal batteries so stays a long-term life. The battery management system will cut off the current output to protect the battery from overcharges, overdischarges, overloads, abnormal temperatures and short circuits. The product is much more stable in performance so it can be widely used in campers, caravans, camping, boat, exterior lighting, car start temporarily, off-grid, and so on. Specification: Standard Voltage: 12.8V Capacity: 100Ah Recommended Charge Voltage: 14.4V~14.6V Cut off discharge Voltage: 10V Standard/Max Charge Current: 50A/100A Over Discharge Protection Cuttent(10s): 180A(5S) Max. Discharge Current(5s): 350A(5S) （Please see the detailed description!).
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Button Battery Charger For LIR1025/1220/1254/2016/2025/2032/2430/2450 Coin Lithium Batteries Type C Charger With LED Indicator
Aliexpress UK
This ULTRAMAX leisure battery is perfect for powering various devices such as boats, yachts, and caravans. The battery is made of Lithium Iron Phosphate (LiFePO4) which is known for its high energy density and long cycle life.
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29.4V 2A li-ion battery Charger for 24V 25.2V 25.9V 7S Lithium battery Charger with DC5525 connector
Aliexpress UK
Suitable for charging cars, motorcycles, trucks, agricultural vehicles, engineering vehicles, dry batteries, water batteries, lead-acid batteries, start-stop batteries, lithium batteries, etc. A must have tool in your car.
eBay
Output 58.8V 3A Li-ion Battery Charger 14Series For 52V Polymer Lithium Battery Charger XLR/DC/GX16/GX12 High Quality Connector
Aliexpress UK
6 Volt 1.0 Amp.Hr. 6 Volt 1.3 Amp.Hr. 6 Volt 3.4 Amp.Hr. Power Sonic Sealed Lead Acid Batteries. 6 Volt 4.5 Amp.Hr. We keep a large range of batteries, not just for RC models such as LIPO & NIMH's but batteries for bait boats, ride on toy cars, alarms and motorbikes.
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Battery Charger Replacement for Dewalt 20V Lithium Battery DCB207 DCB206 DCB204 DCB203 2-Port 90W Fast Charger
Aliexpress UK
Maintenance charging upto 220Ah. Does not require manual disconnection after charging. UK Standard 3 Pin Plug Adaptor. Bungs (Plugs) are only for transportation use. Wrong polarity and short circuit protection.
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Battery Charger For BOSCH 9.6V 12V 14.4V NI-HM Ni-Cd Battery Replacement Charger EU Plug/US Plug GSR7.2-2 GSR9.6-2 GSR12-2
Aliexpress UK
This ULTRAMAX 12V 100Ah LiFePO4 Lithium battery is perfect for powering a range of devices, from high drain to low drain and even solar/wind devices. Its compact and lightweight design also makes it easy to transport, so you can take it with you on the go.
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Hot Sale 18V 21V Li-ion Battery Charger EU/US/UK Plug Replacement Lithium Battery Charger for Makita BL1415 BL1815 BL1830 BL1850
Aliexpress UK
For Car, Truck, Motorcycle, Lawn Mower, Boat, RV, SUV, ATV and More. • Types of batteries: Most types of lead-acid batteries including Calcium, GEL, and AGM, Wet, EFB, etc. • Rated output: 12V 6A. 【Multiple protection】 Built in circuit protection guards against reverse polarity, sparks, overcharging, over-current, open-circuits, short-circuits and overheating.
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90W Battery Charger Replacement for Dewalt 18V 20V Lithium Battery Rechargeable DCB207 DCB206 DCB204 DCB203 Fast Dual Charger
Aliexpress UK