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Memory effect, also known as battery effect, lazy battery effect, or battery memory, is an effect observed in nickel-cadmium and nickelâmetal hydride rechargeable batteries that causes them to hold less charge. It describes the situation in which nickel-cadmium batteries gradually lose their maximum energy capacity if they are repeatedly recharged after being only partially discharged. The battery appears to ‘remember’ the smaller capacity.This battery charger can largely eliminate the memory effect:-A complete discharge before each charge is not necessary.-Occasional unloading, eg after 50 partial discharge cycles, is recommended.-The battery life can be significantly increased by partial discharges -this applies to both NiMH and lithium batteries.Compatible:3.6V/3.7V Li-ion/IMR/INR/ICR32650,26650,26500,25500,22650,22500,21700, 20700, 18700,18650,18500,18490,18350,17670,17650,17500,17350,16650, 16340(RCR123),16500,14650,14500,14430,14350,13650,13500,13450, 12650,12500,12340,10500,10440,10350,103401.2V Ni-MH/Ni-CDAAAA/AAA/AA/A/C/SC/DFunction:1.4 slot discharge function, the discharging current is 500mA. 2.This product is MCU controlled. It can charge any capacity of Ni-MH/CD and Li-ion batteries.3.Four charging current: 500mA/1000mA*4; 1500mA*3; 2000mA*2.4.Black light LCD display can show the charging condition, battery type, charging time, voltage, current, capacity and internal resistance at one time.5.Every slot is independently controlled.6.Power bank function.7.It can test battery type, Li-ion or NI-MH battery, and detect working time. 8.Battery voltage detection, battery voltage can be showed on LCD display.8.With over-charge, over-discharge, short-circuit protection, Temperature protection, bad battery detection and reverse charging protection.Package include:1xBattery Charger(Battery not Included)1xAdapter1 xUser Manual