TP4056 Micro USB LiPo Charger with Protection (1A)

Overview

This is a micro USB LiPo battery charger module that uses TP4056 integrated circuit with 1A charging current.

It uses a micro USB for connecting the board to the computer and works with linear charging.

This module can be used to charge a single-cell battery and it has the ability to protect your lithium battery from overcharging.

Specifications

• Input Voltage: 5 V
• Charge-Off Voltage: 4.2 V ± 1 %
• Maximum Charging Current: 1000 mA
• Battery Over Charge Protection Voltage: 2.5 V
• Battery Over Current Protection: 3 A
• Dimensions: 2.6 cm x 1.7 cm

Module Features

The input terminal has a MICRO USB female socket, which can be directly used as input to charge the lithium battery with a mobile phone charger. And still retain the input voltage wiring solder joints, which can be very convenient for DIY projects.

Module Application Range

This module is used for single-cell lithium battery or multi-cell parallel lithium battery charging. The charging port can take power from USB.

Instructions and Precautions

Note: When the battery is connected for the first time, there may be no voltage output between OUT+ and OUT- . At this time, the protection circuit can be activated by charging it with 5V voltage. If the battery is short-circuited from B+ B- and then connected It needs to be charged to activate the protection circuit. When using a mobile phone charger for input, please note that the charger must be able to output 1A or above, otherwise it may not be able to charge normally.

The MINI USB female socket and the + -pad next to it are the power input terminals, which are connected to the 5V voltage. B+ is connected to the positive electrode of the lithium battery, and B- is connected to the negative electrode of the lithium battery. OUT+ and OUT- are connected to loads, such as the positive and negative poles of the mobile booster board or other loads.

Connect the battery to B+ B- , insert the mobile phone charger into the USB socket, the red light is on for charging, and the green light is for full.

1. The ammeter for testing current can only be connected in series to the 5V input terminal of the charging board.

2. The charging current is preferably 0.37C of the battery capacity, which is 0.37 times the capacity. For example, a battery charging current of 400 mAH is sufficient. If the charging speed is too large, the effect will be poor, and the battery voltage will drop more after charging!

3. The charging connection wire cannot be too thin or too long. This connection resistance is large. If it is too thin, the battery voltage will drop after the charge.

4. It is better to have a good contact with the battery. Otherwise, the battery voltage will drop more after charging.

5. If the input voltage of 5V is too high, such as 5.2 or even 5.5, the charging current will be less than 1000mA, which is normal. When the voltage is high, the chip heats up and the charging current is automatically reduced to prevent the chip from burning. It is normal for the chip to heat up around 60 degrees during operation. After all, the charging current is large.

6. The reverse connection of the input has no effect on the chip, but the reverse connection of the output (battery end) will burn the chip, please pay attention to the buyer.

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