USB Power Bank 4 18650 Cell
thingiverse
USB Power Back Using 4 18650 Lithium Cells. This Is My First Design, And It May Have Different Revisions In The Future. The Current Design Allows For A Small Amount Of Spacing On Top And Bottom Of 18650 Batteries For Soldering Wires. Please Note That There Is No Extra Space For Wrapping Batteries; They Need To Only Have Their Sleeve On Them. To Close The Box, Apply A Small Amount Of Super Glue To The Edge Of The Lid. I May Create A Newer Version With Screw Holes In The Future. If You Have Any Suggestions, Please Put Them In Comments. USB Circuit Board Can Be Purchased From Amazon At Https://www.amazon.com/MakerFocus-Charging-Overcharge-Overdischarge-Protection/dp/B07M836ZV3/Ref=Sr_1_1?Keywords=usb+power+bank+circuit+board&qid=1567902711&s=gateway&sr=8-1
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