18650 lithium battery digital charging module 5V2.4A 2A 1A dual USB output with display boost module

Product Note

Suitable for 20000MAH capacity

The no-load display will flash, it needs to be connected to a load

Product Functions

Switch charging, internal setting 2A charging current<charging efficiency up to 90% @ 2A

<Charging switch frequency 1MHz<Trickle current/constant current/constant voltage three-stage charging

<Equipped with adaptive adapter function for charging current<Charging current temperature regulation function,

Charging current automatically decreases with temperature increase<C/10 Charging termination

Integrated charging overvoltage protection and battery over temperature protection

<Synchronous boost output 5.1V<Discharge switch frequency 500KHz<Discharge efficiency up to 94%

<Automatic load recognition, light load automatic shutdown<Unique boost output thermal regulation function

Discharge module overcurrent, short circuit, overvoltage, and over temperature protection

Long press the power button to turn off the boost module and stop working,

Motherboard size: Thickness 11 * Width 23 * Length 68mm

Motherboard size: Thickness 9 * Width 27 * Length 68mm

Switch function: Long press the switch to wake up the motherboard and change the charging time of the phone

Press the switch to turn off the output and the motherboard will stop working.

Product Note

Why does charging cause power failure or automatic shutdown?

This is caused by a few dismantled batteries having excessive internal resistance. Simply pair it up for testing (although it cannot be detected without instruments) or replace it with a brand new battery. Additionally, try to use better wires as excessive output current can also cause power failure protection. If the load current is greater than 1A, use 5V2.1A for charging to avoid power failure protection.

Why can't it be charged to 99%?

If it is a new battery, the first time the battery is installed, discharge it (i.e. charge the phone) and turn off the phone after discharging the electricity inside. Then charge it again to balance it and it can be charged to 100%. If it is an old battery, it should be discharged first and then charged again. If it still doesn't work, it is caused by high internal resistance and inconsistent capacity of the battery.

Why is the percentage displayed inaccurate when the battery is just installed, when the battery is only 50% charged and shows 80% when installed?

Please carefully review the following for DIY assembly buyers:

What type of battery should be used?

The battery should be a flat 18650 battery, 65mm long, and pointed batteries cannot be used.

If using old batteries with different capacities and brands, they cannot be used. The disassembled batteries must have a minimum voltage of 3.5V or higher per battery. If the voltage is too low, they will not charge when inserted (Note: Lithium batteries, mobile phone and tablet batteries can also be used)

How to distinguish between battery+- pole and power box+- pole?

Generally, the flat end of an 18650 battery is the negative electrode, and the end with a hole is the positive electrode.

You must not install it backwards. If you install it backwards, it will burn out all at once, and if you install it correctly, it will be useless.

Why is there no power output after installing the battery?

After installing the battery, you need to plug in the 5V charger to activate it before using it

What is the actual conversion rate of this power box?

A brand new full capacity standard battery has a conversion rate of about 80%. However, adding connecting wires can cause line loss, making it difficult to determine the conversion rate of old batteries or mixed batteries with false labels. Therefore, when asked about the conversion rate, we cannot give you an accurate answer. Many people resort to dismantling batteries and mixing them together. Can you provide an accurate number? Perhaps no one can say that the first time the battery is installed, it should be discharged (i.e. charging the phone), the electricity inside should be discharged, and then the power supply should be charged again to balance and display the percentage accurately. All digital power supplies are like this.

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