Blackcell BU4 USB Battery Charger

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SKU:blc-bu4 ,Availability:


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BU4 is an 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. Visit ECigMafia for more Vape Accessories.

Blackcell BU4 Charger Specs:

  • Input Voltage: DC USB5V 2A
  • Output Voltage: 1.42V+0.05, 4.2V+0.05V
  • Output Current: 500mA*2/100mA*2/2000mA*1
  • Output USB: 5V/1000mA
  • Charging Mode: Constant Current and Constant Voltage
  • Constant Voltage Cutoff Current:<100mA
  • External Power Supply Standby Current: 15.0mA
  • Size: 111*86*32mm
  • Weight: 122.7g
  • 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
  • USB Output Load Voltage: 4.90-5.30V
  • Output Current: 1000mA
  • Floating Current: <1mA
  • Compatible with Li-ion, Ni-MH and Ni-Cd rechargeable batteries.
  • 5V/1000mA USB automatic identification output, as standard.
  • Two independent, micro-controlled charging slots allow for simultaneous charging.
  • Battery type and status automatically detected.
  • Select the appropriate voltage and charge mode.
  • Features reverse polarity and short circuit protection.
  • Integrated overcharging, overheating, over-voltage, over-current, and discharge protections.
  • Optimally designed for heat dissipation.
  • Certified by CE, RoHS, and FCC.
  • 3 LEDs display the charging status. (30% 70% 100%)
  • When no batteries are installed, the three LEDs will flash and then off one after the other when the charger connected to a power source.
  • When a faulty battery is inserted, the three LEDs will flash at the same time to alert you.
  • During the charging process, the three LEDs light up one by one, and will all remain light up until the charging is completed.
  • 1A or 2A input, Intelligent chip, automatically stop charging when batteries are fully charged.
  • Fully charged testing: -DV, 0DV testing charging time controlling, maximum voltage testing.

Blackcell BU4 Charger Package Contents:

  • 1 x Blackcell BU4 USB Charger

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