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The revised title is: Mini USB 18650 Lithium Battery Charging Board with Battery Protection

Name: Kaisi
Price: 4.19 USD
Availability: InStock

$ 5.99 $4.19

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About this item

The TP4056 is a lithium-ion battery charger suitable for USB or adapter power. It has a fixed charging voltage of 4.2V and an externally adjustable charging current. It automatically stops charging when the current drops to 1/10 of the set value.
When the input voltage is removed, the TP4056 enters low current state to reduce battery leakage. It can also be put in shutdown mode to reduce power supply current.
The 18650 lithium battery charger board has a 5V input voltage and over-discharge protection at 2.5V. B+ and B- are used to connect the lithium battery, and OUT+ and OUT- are connected to the load.
To charge the battery, connect B+ and B- and insert into a USB charger. The red light indicates that the battery is being charged, and the green light indicates that it is fully charged.