How to make Aquarium Oxygen Pump at home – DIY Air Pump Mini

Mini Air Pump: https://shopee.prf.hn/l/7ooXZoW
3.7V Battery: https://shopee.prf.hn/l/KL9ad9R
Battery charger circuit: https://shopee.prf.hn/l/7EvPXk0

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