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TP4056 Lithium Battery Charging Management

Overview

The TP4056 is a charging management chip. This time, it was used to charge a 1500mAh 18650 battery. The designed charging current was 100mA. The actual charging speed was slow and there was basically no heat generation. For personal DIY, the corresponding resistor can be changed to increase the charging current.
This design is a small attempt based on actual needs. Please forgive any shortcomings.
(1) When the battery is not connected, the green light is always on and the red light is flashing.

(2) When the battery is connected, charging begins and the red light is always on

. (3) When the battery is fully charged, the red light goes out and the green light stays on.

Design Files

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Update:2026-03-28 07:30:05

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