Solderless 3 cell 18650 power bank shell case housing 5V 2.4A mobile power supply battery box kit


What is soldering-free? As the name suggests, there is no need to solder batteries or circuit boards. Just put the batteries in one by one just like a remote control.


Features: Fast and convenient.
Battery type : 3.7V 18650 battery (flat head, no protective plate, internal resistance less than 50 milliohms, 1C discharge rate, each cell voltage must be between 3.3-4.2V), pointed batteries cannot be used, modification or modification is not supported Put in other batteries that do not meet the requirements! )


Dual USB output parameters : 5V/0.1-2.1A (high-current devices, fast-charging mobile phones, and mobile phones with 5-inch screens or above have high power. Do not use a battery that is too poor, otherwise it will not be able to output normally and the power will not be accurate.)


Input interface: Type-C port and Micro port (PD is not supported)
Input parameters : standard current 5V/0.1-2A


Power display : 4-level LED light displays the power, and it intelligently shuts down automatically when it is not working. Note that the power is calculated according to the voltage calculation method. Please use a battery with relatively high performance and stable voltage. If the voltage drop of a bad battery is too large, the power of the indicator light will drop quickly, and almost the output will stay at the first or second level of power.


Special features: The motherboard is equipped with anti-reverse protection. If the battery is installed reversely, the motherboard will not be burned. If reinstalled correctly, you can use it normally, but do not mix one positive and one negative into a broken battery, damage the battery, or severely aging the battery, otherwise it will cause the battery to directly short-circuit and burn the spring.


Must read before purchasing:
1: Batteries that can be used: 18650 lithium battery (flat head without protective plate)
Requirements for connecting to the battery: 3.3-4.2V lithium battery (18650 lithium battery): other batteries cannot be connected, such as 1.2V 18650 nickel-metal hydride battery, 3.2V lithium iron battery, all dry batteries, and 12V lead-acid battery
2: Charge and discharge protection: The circuit board has a built-in lithium battery protection IC, which has overvoltage protection, overcurrent protection, undervoltage protection, etc.
3: A maximum of 3 18650 batteries can be installed in a 3-cell package (there is no problem if you install 2 cells or 1 cell).
4: Charging input requirements: The most suitable charger is a charger with 5V2A or above. Any other 5V constant voltage power supply can be used as a charging input power supply. Note that PD chargers are not supported.
5: After the battery is just connected, you usually need to charge and activate the circuit board before the output will appear. If the mobile power supply is not used for a long time, the power supply will turn off the output, and you still need to activate it.


Nesting material = shell + booster board (no battery), no battery, no charging cable included


Note: After the first power-on, there is no output and you need to activate it with a 5V voltage input at the charging port.