![40000mAh power bank , Homemade a power bank - YouTube | Powerbank, Smartphone gadget, Electronics projects 40000mAh power bank , Homemade a power bank - YouTube | Powerbank, Smartphone gadget, Electronics projects](https://i.pinimg.com/originals/12/c6/6a/12c66a2e232943f37fc6f4afcdafa0f7.jpg)
40000mAh power bank , Homemade a power bank - YouTube | Powerbank, Smartphone gadget, Electronics projects
![Who here has made a DIY power bank yet? I'm trying to make a power bank (image for illustrative purpose only) that will use 18650 batteries (3s3p or 3s4p)I just wanna know Who here has made a DIY power bank yet? I'm trying to make a power bank (image for illustrative purpose only) that will use 18650 batteries (3s3p or 3s4p)I just wanna know](https://i.redd.it/0ef8u423l1n51.jpg)
Who here has made a DIY power bank yet? I'm trying to make a power bank (image for illustrative purpose only) that will use 18650 batteries (3s3p or 3s4p)I just wanna know
![Smartphone Power Bank from Scrap Laptop Battery - Homemade|| Make your own circuit for power bank - YouTube Smartphone Power Bank from Scrap Laptop Battery - Homemade|| Make your own circuit for power bank - YouTube](https://i.ytimg.com/vi/Z7rua4v6ikA/maxresdefault.jpg)