The SIP 1000A 12v Capacitor Booster is an innovative handheld portable device designed to discharge a high current boost needed to start a larger car or van battery.Offering powerful performance in a compact unit, the 1000A Capacitor Booster is ideal as a safeguard for home users which can be easily stored or a quick and easy solution for small automotive workshops. Starts up to 5ltr petrol engines or 3ltr diesel engines.How does it work? By connecting the positive/negative clamps from the capacitor unit to the terminals of a flat battery, the capacitor cell absorbs remaining voltage in around 90 seconds. A single touch 'on' button initiates power transfer and a digital display indicates the unit is 'preparing' then 'ready' to deliver boosting current to the vehicle.Applications & uses: Perfect for larger cars and vans, home or small automotive workshop use, and starting up to 5ltr petrol engines or 3ltr diesel engines.• Lightweight capacitor energy cell: Offers reliable and powerful performance when you need it most and without the weight, inefficiency or deterioration of an internal battery.• 90 second preparation 'ready' time for fast boosting capability: This no-maintenance innovation is ready-for-use in as little as 90 seconds and it's easy-to-use functionality means you'll feel in control when delivering it's power.• Robust, portable and compact design: Stores easily in a vehicle glovebox or boot for use in emergencies.• SIP 2-Year Standard Silver Warranty