Thanks to its seven-step charging algorithm, this professional smart charger maintains the health of your 12V lead-acid or Lithium batteries, and helps provide better performance and a longer battery life. A force-fed low current function can also recover some deeply-discharged 'dead' lead-acid batteries, which can save you the expense of buying a replacement. Built-in LEDs and one-button operation sets and shows the charging status and battery condition. Alternatively, the active charge status and operation can be set and checked in real-time via a Bluetooth enabled Smartphone, tablet or laptop. A graphical view and historical usage statistics can be viewed for the past 40 charge cycles, and expert settings can be set for optimum charging. The charger's IP65 splash and dustproof rating makes it ideal for use in workshops, and safety features protect against reverse polarity, short circuits, and over-temperature.