TP4056 Li-ion Charger + Protection
by Generic
SKU: PSA-CMP-TP4056
No reviews yetTypical India street price
₹25–₹60
Charges a single 18650 / LiPo with DW01 protection on better boards.
Interface: USB micro / Type-C
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Concept
CC/CV charger IC for 4.2 V lithium cells.
A little theory
Constant current then constant 4.2 V. Red/blue LEDs = charging/done. Protection FET cuts undervoltage/overcurrent. In the classroom, treat TP4056 Li-ion Charger + Protection as a intermediate part using USB micro / Type-C. Typical India street price is about ₹25–₹60. Always verify voltage and pin labels on your exact module — silk screens vary across clones. Start with a datasheet or trusted learn guide, power the part correctly, share GND with the MCU, and test with a simple blink/read sketch before building the full project. Measure voltages with a multimeter when something fails, and keep actuator current off the MCU regulator.
How it works in a project
Cell on B+/B−, load on OUT+/OUT− (not across the cell if you want protection).
Classroom & project use
- Portable robots
- Power banks
- Power Supply classroom demo
Buying in India
Precautions
- Only 1S Li-ion
- Never charge unattended overnight in class
- Use cells with PCM if possible
Specifications
| Charge | ~1 A default (programmable) |
| Chemistry | 1S Li-ion |
| Category | Power Supply |
| Difficulty | Intermediate |
| Voltage | USB 5V in, 4.2V cell |
| Interface | USB micro / Type-C |
Pinout
See module silkscreen: typically VCC, GND, and signal pins. Confirm labels against the seller photo — clones vary.
