Charges 18V 3.0 Ah Li-Ion battery BL1830 in just 22 minutes! Charges 18V 4.0 Ah Li-Ion battery BL1840B in just 36 minutes! Charges 18V 5.0 Ah Li-Ion battery BL1850B in just 45 minutes!
3 active controls system (current, voltage & temperature) provides an optimal charge and ensures battery cannot be overcharged or overheated during the charging process. Central processing unit (CPU) in battery communicates with charger to analyze battery and charge according to its unique condition. Forced air cooling fan keeps battery at optimum charging temperature and prevents over heating. Digital power display indicates condition of battery and current charge level (-80%, +80%, 100%).