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Feature: LED backlight displays charging / discharging/quick test/circuit more clearly in the dark. Four working modes available at user's choice: Charge, Discharge, Test, Quick Test and Refresh4 independent charging slots charge rechargeable batteries of different types and sizes and with different capacities at the same time. Includes overheat detection to protect rechargeable batteries and charger itself from overheating. Description: Item type:Battery Charger Voltage update rate is the 30s instead of 60s. Charging voltage is regulated to 4.7V instead of 5.0V, thus loading on power adapter when batteries are flat is less. 5.0V charging voltage has a problem in regulating the correct current level due to this overloading current on the power adapter, which leads to Panasonic brand Li-ion batteries showed wrong charging capacity value ( + 25 percent ). With 4.7V charging voltage, the load on power adapter is greatly reduced and thus can make all types of batteries charged properly. 4.35V charging time can be very long because charging current is regulated in entering the CV stage at 4.12V, which is same as 4.2V type. Now, 4.35V charging algorithm is changed to 4.27V. Better safety feature: PCB temperature was used to in controlling fan on / off only with 2.0V, now this function is enhanced so that temperature is monitored for entering thermal shutdown mode when an excessive high temperature is reached. It is especially helpful when the fan is not running and which can lead to plastic meltdown happening. New fan cover provides better protection for the cooling fan. Charging current range: 200mA, 300mA, 500mA, 700mA, 1000mA, 1500mA, 2000mA Discharge current range:200mA, 300mA, 500mA, 700mA, 1000mA ( Li-ion batteries only ) Max. charging capacity: 20000mAh Voltage deviation: ＜ 0.03V @ 4.2V Current deviation: ＜ 5pct Brand: Opus Type: Charger Model: BT-C3100 V2.2 Plug: EU adapter, UK plug, US adapter Charging Cell Type: Lithium-Ion, Ni-MH, NiCd Compatible: 10440,14500,16340,18650 Charging Cell Qty: 4 Input Voltage: AC 100~240V 50/60HZ Output Voltage: DC 12V, 3.0A LCD Screen: Yes Circuit Detection: Yes Protected Circuit: Yes Short Circuit Protection: Yes Over Voltage Protection: Yes Over Charging Protection: Yes Over-Discharging Protection: Yes Package Include: 1X Opus BT - C3100 V2.2 Intelligent Battery Charger 1X Power Adapter 1X English User Manual Note: The colors deviation might differ due to different monitor settings. Description: Item type:Battery Charger Voltage update rate is the 30s instead of 60s. Charging voltage is regulated to 4.7V instead of 5.0V, thus loading on power adapter when batteries are flat is less. 5.0V charging voltage has a problem in regulating the correct current level due to this overloading current on the power adapter, which leads to Panasonic brand Li-ion batteries showed wrong charging capacity value ( + 25 percent ). With 4.7V charging voltage, the load on power adapter is greatly reduced and thus can make all types of batteries charged properly. 4.35V charging time can be very long because charging current is regulated in entering the CV stage at 4.12V, which is same as 4.2V type. Now, 4.35V charging algorithm is changed to 4.27V. Better safety feature: PCB temperature was used to in controlling fan on / off only with 2.0V, now this function is enhanced so that temperature is monitored for entering thermal shutdown mode when an excessive high temperature is reached. It is especially helpful when the fan is not running and which can lead to plastic meltdown happening. New fan cover provides better protection for the cooling fan. Charging current range: 200mA, 300mA, 500mA, 700mA, 1000mA, 1500mA, 2000mA Discharge current range:200mA, 300mA, 500mA, 700mA, 1000mA ( Li-ion batteries only ) Max. charging capacity: 20000mAh Voltage deviation: ＜ 0.03V @ 4.2V Current deviation: ＜ 5pct Brand: Opus Model: BT-C3100 V2.2 Charging Cell Type: Lithium-Ion, Ni-MH, NiCd Compatible: 10440,14500,16340,18650 Charging Cell Qty: 4 Input Voltage: AC 100~240V 50/60HZ Output Voltage: DC 12V, 3.0A LCD Screen: Yes Circuit Detection: Yes Protected Circuit: Yes Short Circuit Protection: Yes Over Voltage Protection: Yes Over Charging Protection: Yes Over-Discharging Protection: Yes Package Include: 1X Opus BT - C3100 V2.2 Intelligent Battery Charger 1X Power Adapter 1X English User Manual Note: The colors deviation might differ due to different monitor settings.