TP4056 5V 1A MICRO USB 18650 LITHIUM DUAL PROTECTION BATTERY CHARGING MODULE

Description

A lithium-ion single-cell charging module is a small circuit designed to safely charge a single Li-ion (or LiPo) cell, typically with a nominal voltage of 3.7 V (fully charged at ~4.2 V).

The most common and inexpensive example is the TP4056 module.

Key Features

• Input voltage: Usually 5 V (USB or regulated supply)

• Charge voltage: 4.2 V (fixed)

• Charge current: Adjustable (default 1 A for TP4056; set with resistor)

• Protection:

  • Some modules include overcharge, over-discharge, and short-circuit protection (via DW01A + FS8205 MOSFETs).

  • Others are bare charger boards without protection, intended for cells that already have a built-in protection circuit

    

Things to Keep in Mind

• Never charge a Li-ion cell without a proper charger—overcharging can cause fire or explosion.

• Ensure good heat dissipation for modules like TP4056 if charging at 1 A.

• If your cell has no built-in protection board, use a module with protection.

• Charging current should ideally be ≤ 0.5–1 C of battery capacity.
  Example: For a 2000 mAh cell, charge at ≤ 1–2 A (safer at ~1 A).

Module performance:
The input voltage: 4.35-6 v (recommended voltage 5 v)
Charge cut-off voltage: 4.2 V + / – 1%
Maximum charging current output: 1000 ma
The battery overcharge protection voltage: 4.28 V
Battery overcharge lifting voltage: 4.00 V
The battery discharge protection voltage: 3.0 V
Battery discharge termination voltage: 3.2 V
Battery: over-current protection current 3 a
The board size: about 2.5 * 1.65 CM
Light state: no load the light not bright, red light for recharging, is full of green light.