Battery type: Li-Ion 3.6 / 3.7 V - ICR / IMR / INR, Ni-MH, Ni-Cd 1.2 V - AAAA / AAA / AA / A / C ; Battery charging current: 0.5 A @ 4 pcs, 1 A @ 4 pcs, 2 A @ 2 pcs ; Main features: The LCD display informs about the charging capacity, cell voltage, charging current and percentage of battery charge, Supports protected PCM/PCB batteries in sizes 20700/21700, Deeply discharged cell reactivation function, Power Bank (5V, max. 1A) function ;