The SIP 12v/24v Pro Booster 6400 is a purpose-designed rechargeable battery booster pack that uses proven and reliable AGM technology to provide powerful boost-starting performance. It offers a high crank rate ideal for a range of applications. Increased durability is achieved through a robust and shockproof ABS casing, plus heavy-duty clamps and copper-cored cables. Perfect for professional environments. Integrated reverse polarity protection offers added safety, while the accompanying audible alert captures attention in busy or loud environments for added peace-of-mind. For added versatility, the 6400 has an integrated 12v DC portable power supply suitable for charging a range of electronic devices directly from the pack. Ideal for boosting motorcycles, cars, vans, trucks, tractors, excavators and HGVs. 6400A boost peak rate and 3050A cranking rate (12v) 3200A boost peak rate and 1525A cranking rate (24v) Rechargeable and proven AGM pack with high crank rate 12v DC power tak