DIY Battery Bank - Make Your Own Portable Charger!
Check out this do-it-yourself battery bank where you get your own 18650 batteries to charge your smart devices. There are many different types of portable battery pack shells, but this one can hold up to 4 batteries and has a display to see how much power is left in the battery pack. This is a great device to carry around with you, keep around the house, or take with you on your next vacation.
Here are some DIY packs to choose from:
https://amzn.to/3pjtwkO
https://amzn.to/3a5LYa6
https://amzn.to/3pjtxVU
18650 Batteries:
https://amzn.to/3qQJXW3
https://amzn.to/3iNHBUZ
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