![How to make your own cell phone charging power bank with a 3-D printer, controller circuit board, and lithium battery, rechargeable with 5V input, and 5V output for charging 4.2V lithium ion How to make your own cell phone charging power bank with a 3-D printer, controller circuit board, and lithium battery, rechargeable with 5V input, and 5V output for charging 4.2V lithium ion](https://www.powerstream.com/z/power-bank-3.jpg)
How to make your own cell phone charging power bank with a 3-D printer, controller circuit board, and lithium battery, rechargeable with 5V input, and 5V output for charging 4.2V lithium ion
![Amazon.com: LHIABNN DIY Power Bank - Make Your Own External Battery Pack,2 Output 3 Input (Mirco,Type C,Lighting) - Battery Not Include (Blue) : Toys & Games Amazon.com: LHIABNN DIY Power Bank - Make Your Own External Battery Pack,2 Output 3 Input (Mirco,Type C,Lighting) - Battery Not Include (Blue) : Toys & Games](https://m.media-amazon.com/images/I/51StYEcPrJL._AC_UF894,1000_QL80_.jpg)
Amazon.com: LHIABNN DIY Power Bank - Make Your Own External Battery Pack,2 Output 3 Input (Mirco,Type C,Lighting) - Battery Not Include (Blue) : Toys & Games
![Amazon.com: LHIABNN DIY Power Bank - Make Your Own External Battery Pack,2 Output 3 Input (Mirco,Type C,Lighting) - Battery Not Include (Black) : Toys & Games Amazon.com: LHIABNN DIY Power Bank - Make Your Own External Battery Pack,2 Output 3 Input (Mirco,Type C,Lighting) - Battery Not Include (Black) : Toys & Games](https://m.media-amazon.com/images/I/51gNoMh2vaL.jpg)
Amazon.com: LHIABNN DIY Power Bank - Make Your Own External Battery Pack,2 Output 3 Input (Mirco,Type C,Lighting) - Battery Not Include (Black) : Toys & Games
![2/3 Port Input Battery Charger Outer Case Quick Charging DIY Power Bank Make Your Own External Battery Pack for Cellphone Tablet| | - AliExpress 2/3 Port Input Battery Charger Outer Case Quick Charging DIY Power Bank Make Your Own External Battery Pack for Cellphone Tablet| | - AliExpress](https://ae01.alicdn.com/kf/S227b276baa6240d0811b13c86df24755N/2-3-Port-Input-Battery-Charger-Outer-Case-Quick-Charging-DIY-Power-Bank-Make-Your-Own.jpg)
2/3 Port Input Battery Charger Outer Case Quick Charging DIY Power Bank Make Your Own External Battery Pack for Cellphone Tablet| | - AliExpress
![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)