• DC to DC battery charger ideal for charging an auxiliary battery in vehicles such as camper vans and caravans. • Will charge your second battery whilst driving and will be linked to the ignition switch to avoid draining your main battery (requires hard wiring).• Suitable for 12V GEL, AGM, calcium and conventional lead acid batteries.• Can be used in conjunction with a solar panel when the vehicle is switched off.• Protected against short circuits, open circuits, output reverse polarity, overcharging, over-current and overheating.• Rated at IP65 water resistance.• 2 Year guarantee*.DC TO DC battery charger ideal for charging an auxiliary battery in vehicles such as camper vans and caravans. Will charge your second battery whilst driving and will be linked to the ignition switch to avoid draining your main battery (requires hard wiring). Suitable for 12V GEL, AGM, calcium and conventional lead acid batteries. Can be used in conjunction with a solar panel when the vehicle is switched of