These Samlex America Three Stage Battery Chargers safely charge and condition your flooded, AGM, or Gel-Cell batteries. When sized properly, they will even charge batteries already under external load! Charging rates are provided from 10 to 80 amps, depending on the model, and you may also choose between 12 and 24 V battery systems. Configurable for 120 or 230 Vac, they are all based on switching power-supply technology, so you know that they are lightweight and efficient! The output is well-filtered, so you may use them as power supplies, too! These chargers will charge two or three banks of batteries simultaneously--with no isolators required! They include either an ammeter or LED power indicators and are protected from short circuit, overload, and reverse polarity. Possible uses include automotive support, RVs, boats, communication sites, battery backup systems, and even with alternative energy systems. Come up with your own ideas! Samlex America Three Stage Battery Chargers are versatile enough to fit loads of applications!