The Fein ALG 80 Rapid Charger features short charging times with a high, 8 A charging current and process controlled charging management. The charger also features a large LED display with charging status. The USB connection is ideal for mobile charging of small electronic devices such as smartphones or tablets. The charger is for use with all FEIN li-ion batteries. Charging times: (80% of max capacity): 12 and 18 V/3 Ah: 31 minutes, 12 and 18V/6Ah: 38 minutes, and 18V/5.2 Ah: 33 minutes.