21700 4s2p battery pack (for fix wing RC plane)

This is a regular 4s2p arrangement of liion cell pack for RC plane.
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updated January 13, 2023

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This is a regular 4s2p arrangement of li-ion cell pack for RC plane. 

Design comes with fusion360 file f3d, so you can change any parameters to suit your cell and spacing. You can also just modify it to 18650 pack if you want by changing two parameters. 

It needs spot wielder and some stripe. On top of the wire to connect the main leads, you also need some thin wires for balancing lead wires. The rest should be glued together. 

batt_dia_n is negative lead diameter and batt_dia_p is positive. Adjust these if your cell is too tight or lose. 

for 21700_4s2p_pack_5 part, it would be easier to print by spiting body at 6mm in slicer. 

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