Charge and maintain virtually any vehicle battery with the NOCO G3500. This versatile, fully automatic charger works with both small and large batteries, from 1.2Ah to 120Ah, including batteries for cars, trucks, boats, RVs, motorcycles, ATVs, jet skis, and snowmobiles. The G3500 uses a thorough eight-step process to charge and maintain your battery and features a switch-mode design, resulting in a charger that's small and lightweight. Rapid Charging Technology enables the G3500 to charge batteries two times faster than traditional chargers. The NOCO G3500 uses an advanced eight-step process to charge and maintain your battery. First, it checks your battery's voltage to make sure that the connections is good and that the battery is in stable condition before beginning the charge process. Second, it initializes a recovery process, if needed, for deeply discharged or sulfated batteries by pulsing small amounts of current. Next, it begins a bulk-charging process with a gentle (soft) charge. The process then continues using both a high-rate and medium-rate charge returns 80-percent of the battery's capacity. From there, the G3500 brings the charge level to 100-percent and continues to deliver only enough current to keep the battery full. Finally, it monitors the battery voltage to determine whether a maintenance charge should be initiated. The maintenance cycle is repeated to keep the battery at full charge, without overcharging, and the charger can be left connected indefinite.