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1. Up to 1A Programmable Linear Charging Current
2. For single 3.7V lithium battery, full 4.2V
3. Constant current/constant voltage charging with over-temperature protection
4. Soft start to limit surge current with battery reverse protection
5. Low power standby, prolong battery life
6. Dual output of charging status, no battery and fault status display
7. Can be activated at 0V, 2.9V slip current charging
8. Operating temperature -40~80℃
9. Input voltage range 4.2V~6.5V
Note:
1. The battery cannot be connected backwards, as it can easily damage the motherboard.
2. The battery terminal voltage should not exceed the product overshoot voltage.
3. Batteries cannot be connected in series, they can only be connected in parallel. The battery of parallel can be several, but not recommend too many.
Package included:
5 * TP4057 1A 3.7V Lithium Battery Charging Board with Protection
eric
Reviewed in the United States on May 15, 2025
I really like these but I noticed 2 issues, the output pads are tied to the 2a protection circuit so it will trip even if your battery is capable of handling more. Also the holes on the board don’t really line up with standard prototyping pcbs. Other than that, they are fast and reliable so far. And the functionality of the led indicators is great. Also if you short a lipo and plug it into this, it will reset the lipo protection circuit.
Alex Levin
Reviewed in the United States on May 13, 2025
Very compact. No issues. I used it to replace/upgrade a broken micro-USB charging port on a wireless speaker.
MrSer777
Reviewed in the United States on February 24, 2025
Compact and Lightweight – Ideal for integrating into small projects without adding bulk.
bryan
Reviewed in the United States on February 14, 2025
The media could not be loaded.
Arachnologist
Reviewed in the United States on February 10, 2024
1. The boards were not loaded with TP4057, as advertised, but with TP4056, which is very similar. The difference between chips is in setting the charging current, but the resistor value on the board was selected for the latter one.2. The bottom layer of the board acts as a heat sink. When charging the fully discharged battery, the power dissipated in TP4056 is the largest, and the booard gets very hot (about 85 deg C). The board could be somewhat bigger so the heat sink was bigger (and cooler).3. The board does not have mounting holes, so using it as a module in the project is problematic. Again, the board could be bigger and have mounting holes.Other than the above, the board works.
Roger
Reviewed in the United States on December 23, 2024
Working great for my projects so far, like the blue charging light
Keith a trunick
Reviewed in the United States on November 13, 2024
Good
Steve O'Brien
Reviewed in the United States on October 25, 2024
Worked right the first time
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