Manufactured with professional grade, high performance Hawker Enersys AGM battery, produced in the USA, specially formulated to jump-start vehicles with AGM, calcium, lead acid & sealed lead acid batteries. The Hawker Enersys batteries are sealed & are able to be stored in any position. These Road Starts® are the first with DEKRA approval. Ventilation & integrated fan ensures potential gases escape safely. Features a tough, high impact casing which is durable & corrosion proof for easy portability & is fitted with a rubber boot on the base to protect unit from knocks & bangs. Fitted with isolating rotary on/off switch. All units feature two-function digital display which indicates internal & vehicle's battery voltage & percentage of charge when charging internal batteries. Also indicates charging voltage when engine is running. Connecting the vehicle's battery before the unit is switched on allows the user to see the current battery voltage. A fusible link integrated in the charging cable gives increased protection to the unit while making for an easier fuse change without disassembly. A 15A thermal trip fuse is integrated in the 12V accessory socket, which if activated is self-resetting. Surge & spike protection prevent damage to delicate & sophisticated vehicle electronics. Extra-long 1, 000 strand pure copper output cables are flexible down to -40°C & the clamps are manufactured with braided link to each jaw for maximum power transmission. Easy cable wrap storage with clamp 'holsters' ensure the unit is compact & tidy when not in use. Audible warning system (AWS) to advise operator of reverse polarity, overvoltage (to protect 12V versions) & connection reminder. The AWS will sound if charger has been turned on for too long without being connected to a battery. Easy cable wrap storage with clamps pockets. Audible warning system (AWS) to advise operator of reverse polarity, overvoltage (to protect 12V versions) & connection reminder. The AWS will sound if charger has been turned on for too long without being connected to a battery. The external 2A automatic charger/maintainer has been specifically programmed for Hawker batteries & features Speed Charge technology for fast, safe charging & maintenance.