Wall clock, Table clock etc are generally running on DC 1.5 volt AA size battery cell. Which drains out after some months and we have to change it. In this video, I will show you how to run these types of clocks (or anything runs on DC 1.5 volt) on rechargeable 18650 3.7 volt LiIon battery. You can also use mobile battery instead of 18650. You can Several times recharge and use this battery.

For how to recharge LiIon battery, see my video:    • How to make a Lithium Ion Battery Cha...  

Electronic Components Buying Link :
Transistor BC547 : https://amzn.to/3ar3Jif
Resistors : https://amzn.to/2UPMzoP

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