21700 with protective circuits Battery Holder Keystone V2a

Version V2a: additional 4xM3+2xM3 holes for mounting on one more side. 

Battery Holder for 21700 batteries equipped with safety circuits. The Battery in the picture has length x diameter 75x22 mm. The design is for Keystone 1107-1 soldering contacts. The battery snaps in the holder and can be pried out again carefully with a screwdriver.

The Keystone 1107-1 should be inserted 5.5 mm from the top of the print (see the picture with the caliper where this distance is measured).

Please clean the small slot (8.5x1mm) for the metalcontact, e.g. to remove strings, to avoid any stucking and bending when inserting the soldering contact.

On one side is a simple cablemanagement for up to 1.5mm² cables.

The holes are designed for M3 (diameter 3.5mm). The 4xM3 holes are exaktly 98 mm from center to center. The whole print is 106,75 mm long and 31 mm wide.

Do not use nozzles bigger than 0.4, Layer 0.2 (Quality) to print the slot for the soldering contacts exaktly. 50% infill is recomended.

The part in the pictures is printed and tested with Nobufil PCTG, colour stainless steel, and a MK3S. I dont know if it works with PLA - it should!

Check out also my 18650 and the 21700 V2 battery holder. 21700 is my favourite battery size (+50% capacity, just a bit taller).

Overengineered in Austria. Tested under harsh conditions in the alps.

Keep on printing!