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Tesla Model 3 21700 Battery Cap

Tesla Model 3 21700 Battery Cap preview

Files (2)

21700-cell-cap-corner-simple.stl
STL
211.0 KBPrimary file
21700-cell-cap-v5.stl
STL
104.5 KB

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ASA filamentAmazon · Affiliate linkAmazon product page for 1.75 mm ASA; use an enclosure and suitable ventilation, and confirm seller and regional availability.Check price at Amazon

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CC BY
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The file license permits commercial reuse, subject to any applicable attribution or share-alike terms. License status does not verify vehicle fitment, OEM rights, design patents, or safety.

KH

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Description

These are solderless caps for Tesla Model 3 Batteries (21700) to build your own battery pack. Batteries are $2.49 available at Big Battery 21700 Designed in TinkerCad, the cell cap is available here: 21700 Cell Cap and the Cell Cap Corner is available here: 21700 Cell Cap Corner The holders are for Tesla Model 3 style 21700 Batteries. For this build I bought 100 batteries (98 are used for a 14s7p battery pack that is 52 volts and 35 amp hours). You can purchase the batteries for $2.49 per unit at Big Battery The machine screws and nuts can be purchased at Bolt Depot. This is what I ordered for my 14s7p batter pack.!Hardware

Compatible Vehicles

Published Jun 27, 2026Updated Oct 29, 2026

Originally published on thingiverse.com by Kenneth Hurley (klhurley) · License: CC BY

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