3 Cell Lithium Ion Battery Charger Circuit

Based on the tp4056 lithium ion battery charger controller ic and the above shown circuit diagram several li ion battery charger modules are developed.

3 cell lithium ion battery charger circuit.

Using the current setup i was able to set the limits from 7 08v to 9v. See if this link helps. Contain 3 leds and that will indicating power on off charging indicator and full charging indicator. This circuit is for a 2 cell li ion battery pack and successfully charged my 7 4v battery.

It s a simple circuit that will effectively charge your li ion batteries. I have to confess that i m faced with the same problem and feel changing r2 to 1k might be the. Lithium ion battery charger circuit. Circuit diagram and explanation.

Here is a tried and tested sample circuit of a li ion battery charger that can be used to charge any 3 7v li ion battery using a 5vdc usb solar panel power supply. This post is about a tested sample circuit of a lithium ion battery charger that can be used to charge any 3 7v 500ma li ion battery using a 5v dc usb solar panel dc adapter power supply. When the usb is powered the fet q1 is turned off and current flows to the lithium ion charger ic and to the 3 3v regulator mcp1603. The booster part is used to boost the battery voltage from 3 7v to 4 5v 6v.

At the heart of the circuit is one microchip mcp73831 available in sot 23 5 package. The following image shows the module used in this project. To charge a 3 7v cell you might have to change the value of r2. The 10 k preset positioned at pin3 of the opamp is used for setting the over charge level for a 3 7 v li polymer battery this may be set such that the output of the opamp goes high as soon as the battery is charged to 4 2 v for a single cell.

For enabling low voltage detection the switches j1 and j2 may be appropriately selected the ic starts the charging process by first detecting the voltage of the cell. 3 7 v li ion battery charger circuit using lm358. Tp4056 li ion battery charger module. Hi friends today in this video i have shown 3 7v lithium battery charger circuit very easy if you have enjoyed this video then pleas like share comment and.

This circuit has two main parts one is the battery charging circuit and the second is dc to dc boost converter part. It is a tiny module with all the components mentioned in the above circuit diagram. The circuit diagram for 18650 lithium battery charger booster module is given above. Under usb power the lithium ion battery charges.

The circuit is designed using a microchip mcp73831 2 ic.