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.
Specification
| 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 |
| Weight |
122.7g（Charger Only） |
| 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
- USB output load voltage: 4.90-5.30V
- Output current: 1000mA
- Floating current: ＜1mA
- When load current is 1000mA, USB output voltage is 4.75-5.25V
- Cutoff output protected voltage: 3.0±0.1V
Features
- 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.
Precautions
- The product is for use specifically with Lithium, Ni-Cd and Ni-MH batteries only. Charging other batteries can potentially lead to an explosion, broken or leaking batteries, personal injury or property damage.
- Incorrect use of the charger may lead to an electric shock.
- The BU4 charger should only be used indoors or inside a vehicle. Under no circumstances should it be exposed to water, high humidity, and low or high ambient temperatures.
- Do not disassemble or modify the charger.
- Please use appropriate AC voltage 100-240V.
- No BlackCell products are intended for use by anyone under the age of 18.
- The safe operating temperatures are between 0°C-35°C 32°F-95°F.
- Do not drop or rest heavy items on the unit.
- If any problems arise with either the batteries or charger, unplug the power cord immediately.
Warranty
The BU4 Charger can be exchanged for a replacement by authorized distributors within 180 days If there are any product issues.
The warranty is invalid in any situation below:
- The product(s) is/are broken, reconstructed and modified.
- The product(s) is/are damaged by leakage of batteries.
- The product(s) is/are damaged by improper use.
