Protection Circuit for Protecting battery from overcharging??

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Hello!!! Everyone...

I am using Mobile Phone battery as a source to power my circuit, but i need a protection circuit for protecting my battery, from overcharging.

That's is whenever my battery gets charged that protection circuit disconnects my battery from the charging point.

Can anyone suggest me a circuit or something else.
After searching on forum and on internet i really gets confused and found one solution to my problem.

This is S-8241 Series IC which is specially developed for this purpose.

If someone is having other way to solve my problem, then please help me...

Thanks in Advance..

 

[Genovator]

https://www.linear.com/product/LTC4054-4.2

It automatically disconnects charging when the battery reaches to its floating point... It will automatically charge, monitor the temparature, and do lots of other things by himself.

 

[tpetar]

See this project:

https://www.elektronika.ba/795/pametni-tester-i-punjac-baterija/



Very nice charger MCP73832 based (you have circuit):

https://www.mikroe.com/add-on-boards/power-supply/volt/
**broken link removed**

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Also see MAX1811 charger circuits.


https://tehnikservice.net/2011/04/14/pcb-for-usb-charger-with-max1811/

**broken link removed** **broken link removed**




Charging Graphs for Li-Ion battery :





Additional precautions for situations when charging Lithium based batteries (DIY chargers, self made circuits with Li batteries):

1. Dont leave unattended charging process.
2. Avoid charging process on high temperatures (45C >).
3. Dont put Li based batteries on direct sun or in car under windshield.
4. Immediately stop to use or charge defective Li based battery.

:wink:

 

[madhusuthanan]

hi

have you tried tpetar idea?