The Tornado4000 is more than a smart compact battery charger. It is a battery maintainer, a charger, a battery desulphator and a DC power supply, all in one unit. The Tornado4000 can provide a steady 13.5 volts DC to power on-board devices on a boat, with a capacity of up to 4 amps. It is compatible with 6V/12V lead-acid batteries and 12V lithium-ion batteries up to 120Ah. The 5 charging options combined with 9-step smart charging technology make the Tornado4000 extremely versatile. Thanks to its IP65 waterproof housing and its ability to operate in cold weather (down to -4°F/-20°C), it can be used in various environments while being light and portable. Operation is easy thanks to the four fault indicators.