HOMEMADE POWER BANK FOR TRAVELLING

One day, I went to a forest region in India. I have charger but I am not having a power bank with me. In that forest I stayed in a tree house,there was no plug to charge my mobile. In such situation we can use this type of power bank. It is cheaper than the normal power bank. It can hold the charge ...
By: VIGRAM NARAYANASAMY

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