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Generally we need to buy a pencil or dry battery to operate our wall clock.
We will show you how to make rechargeable wall clock that runs forever and no need to buy dry cell or pencil battery. Get rid of buying pencil battery for your clock from today.
To do this you do not need to buy any new battery. Just need an unused mobile phone's battery which may have in your house.
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#wall_clock_without_battery #best_learning_centre