Sealey Schumacher® Wheeled RoadStart® Emergency Jump Starter 12/24V

High performance (2x 23Ah) AGM battery, specially formulated to jump-start up to 500hp diesel vehicles. Rotomolded high durability casing with lifetime guarantee. Patented 4A microprocessor controlled speed charging and thermal runaway protection. Unlike other booster packs, can be left safely on charge continuously. Audible warning signals if the unit has been turned on for too long without being connected to a battery and reverse polarity. Isolating rotary on/off switch and analogue display showing the internal battery level. 12V Output socket can be used as a memory saver as well as for powering accessories such as mini compressors. Ventilation system vents gases directly out of the casing via a 'Whistle' outlet, warning the user of a potential issue. A fuse integrated in the (+) clamp provides short-circuit and overload protection. Heavy-duty clamps with a braided link between each jaw for maximum power transmission. Curved clamps provide easier access to awkward battery terminals.