18650 / 21700 Tube Battery Holders
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Stackable 18650/21700 Cell Battery Holders for two different pipe sizes
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- Printables
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I created two different battery holders to create tubular batteries instead of the standard rectangular/square sized batteries. You can use either 18650 battery cells or 21700 battery cells. These are stackable and fit two different tube sizes based on the battery chosen.
18650 - Fits a 1 INCH OD tube with a 0.0625 INCH Wall
21700 - Fits a 1-¼ INCH OD tube with a 0.125 INCH Wall
18650 TALLSOCKETS - Fits a 1 INCH OD tube with a 0.0625 INCH WALL These prints have taller slots for the battery terminals to be used and align more centered with the battery cells terminals.
21700 TALLSOCKETS - Fits a 1-¼ INCH OD tube with a 0.0625 INCH WALL These prints have taller slots for the battery terminals to be used and align more centered with the battery cells terminals.
I used these amazon terminal to keep pressure on the battery as seen in the pictures. I eventually went with tin strips since I was able to get my hands on a spot welder. You can use the below linked terminals to solder on wires to connect the batteries in any configuration you want. I am going with a 3S stack of 21700 cells as shown in pictures.
Amazon Link https://www.amazon.com/dp/B0DHKRX8SP?ref=ppx_yo2ov_dt_b_fed_asin_title
REMIX AS YOU PLEASE TO FIT WHATEVER CELLS YOU LIKE!
I printed these on both a Prusa i3 MK3S and a Bambu Labs X1C, supports enabled.