1.1 Efan NC4 Charger is an intelligent charger with widely temperature usage. NC4 can charge all 3.7V rechargeable cylindrical battery.
1.2 The product is equipped with multiple security protection settings to prevent battery damage caused by reverse connection, short circuit, over charge, over discharge and over current.Let users have good experience.
1.3 This product can charge different types of 3.7V cylindrical lithium battery, with wide compatibility and strong practical performance.
2. Application Range
2.1 Batteries type
NC4 USB Charger is available for lithium ion (3.6V/3.7V) batteries
2.2 Batteries Size:
/20700/21700/22700/25500/26650/26700 Li-ion battery.
2.3 Batteries Max Allowed Capacity
10000mAh for Li-ion battery.
2.4 Batteries Max Allowed Size:
70mm in height and 35mm in diameter for cylindrical battery
2.5 Accepted Batteries Quantity: 4
NOTE: Do not charge any non-rechargeable battery.
3. Electrical characteristics
3.1 Input/Output Characteristics
3.1.1 Input Voltage and Current: Micro USB DC 5V 2A
3.1.2 Output Voltage and Current:
DC 3.70V 600mA ×4 CHs for 3.7V li ion battery
3.1.3 Output Current: 600mA
3.1.4 Charging Voltage Range: 2.75V-4.2V ×4 CHs
3.1.5 LED-Alter Current: When the battery is full charged, LEDs will not flicker and turns to full Green. LED-alter Current.≤100mA ×4 CHs
3.2.1 Short Circuit Current
When it is short circuit, the charger will get into short circuit protection and LED lamp will be no display
short circuit current: 0mA X4CHs
3.2.2 Polarity Reserve Protection
Polarity Reserve Current: 0mA x4CHs
Reverse polarity protection ensures charger and batteries would not be damaged when user inserting batteries with reversed polarity. And the LED Lamp will be no display
NOTE: Please do not insert batteries reversely for a very long time
3.2.3 Reverse Irrigation Current
Reverse Irrigation Current: ≤60uA x2CHs ( In normal charging process, when the AC power cuts off suddenly , the current which is released by discharge called reverse irrigation current. )