Blackcell Battery Charger
Blackcell Battery Charger
Blackcell Battery Charger

    Blackcell Battery Charger

    Blackcell chargers are intelligent charger, which combines convenience and fast charging into a single unit. Charging times depend on each batteries current capacity, although the independent output (1A, 2A) and pulse charging circuit are compatible with any cylindrical Li-ion batteries (3.6/3.7v), Ni-MH and Ni-Cd batteries ranging in size between 10440 up to 21700. The BU4’s 3 LED display allows for clear viewing of the current charging status.



    • Four, independent micro-controlled charging slots allow for simultaneous charging at 5V DC USB input.
    • Automatically distributed charging current (500mA*4/1000mA*2/2000mA*1), 2000mA for slot 4 only. 500mA is the default setting for charging Ni-MH and Ni-Cd batteries.
    • LED display charging status 30%, 70%, 100%.
    • Li-ion and Ni-MH Ni-Cd batteries are automatically detected.
    • 0V voltage Activation capabilities. Trickle charge activated when the battery voltage is between 1.65-1.85V.
    • Faulty batteries and battery reverse connected batteries are automatically detected.
    • Charging mode: constant current and voltage.
    • DC input, the power supply is 5V 2A (Micro plug).
    • Automatically detected USB 5V/1000mA output function.
    • Certified by CE, ROHS, and FCC.
    • When no batteries are installed, the three LEDs will flash and then turn off one by one when the charger is connected to a power source.
    • When a bad battery is installed, the three LEDs will flash at the same time.
    • During the charging process, the three LEDs light up one by one, and will all stay lit until charging is completed.


    Input Voltage DC USB5V 2A
    Output Voltage 1.42V+0.05V, 4.2V+0.05V
    Output Current 500mA*4/1000mA*2/2000mA*1
    Output USB 5V/1000mA
    Charging Mode constant current and constant voltage
    Constant voltage cutoff current <100mA
    External power supply stand by current <15.0mA
    Size 111mm*86mm*32mm
    Compatible with IMR/Li-ion: 26650 22650 18650 18400 18350 17670 17500 18340 14500 10440 21700 20700 Ni-MH/Ni-Cd: AA, AAA, AAAA, C
    Input type USB
    Important Note:

    There are inherent risks attached to the use of all rechargeable batteries. Special caution must be applied when working with Li-on or any other type of rechargeable batteries. They are extremely sensitive to charging characteristics and may cause serious injury, damage, or defect resulting from the improper use, modification, mishandling or misuse of the batteries or battery chargers in any form or shape at any stage of transportation or use. User must have knowledge on the charging, discharging, assembly and storage of these batteries before use. Use at your own risk!

    • This battery is not protected and must be used with special caution
    • Do not use if any visible damage/ defect is present on battery or charger
    • Always only use chargers that are deemed safe by relevant authorities
    • Do not leave batteries charging unattended
    • Always charge on/ in a heat resistant, non-conductive and fire-proof surface
    • Always transport and store battery in a safe, non-conductive container in a controlled environment
    • Dispose of all batteries and chargers in accordance to local laws and regulations
    • Keep away from children and pets
    • This battery is not protected and must be used with special caution