The SIP 12v24/v SC Pro Booster 18000 is completely maintenance-free with an unlimited shelf life thanks to a high current superconductor design which utilises powerful ultracapacitors who, in turn, remove the need for an internal battery. This means the power of an AGM booster pack is still available, but without the heavy weight, inefficiency, and battery deterioration. All the benefits without the hassle. Perfect for boost-starting ATVs, motorcycles, cars, vans, trucks, tractors, excavators, and HGVs safely and efficiently, plus service, mobile, and roadside applications. 12v/24v heavy-duty capacitor start booster 18000A (12v) or 9000A (24v) boost peak rate 4400A (12v) or 3400A (24v) cranking rate 10x 3400F ultracapacitors for powerful performance ON/OFF switch and a safety fuse on positive clamp Robust and shockproof ABS casing for high durability Digital charge rate indication for high accuracy Reverse polarity protection with audible alert Ideal for ATVs, motorcycles,