12V 18650 Battery Pack Enclosure - 3S3P

A 3D-printable enclosure for the 12V 18650 battery pack featured on JABALI. The pack uses nine 18650 lithium-ion cells in a 3S3P configuration and a 3S 20A BMS. Its nominal voltage is 11.1V, and it reaches 12.6V when fully charged. The enclosure consists of a main body, a lid, and separate detail panels. Printing the panels separately lets you use a contrasting color for the labels and details. Hardware used in my build - 9 × 18650 lithium-ion cells - 3S 20A BMS - 2 × 5.5 × 2.1 mm DC output jacks - USB-A 5V output module - USB-C charging input - Battery level display - Rocker switch and XT60 connector

Printing Print the main enclosure with the 0.4 mm nozzle profile and the detail panels with the 0.2 mm nozzle profile. The STL files are available separately if you prefer to slice the parts yourself. 🛒 Parts Used: 🛡️ BMS Battery Protection Board: https://share.temu.com/PO4gcoiPJOB 📊 Battery Level Display: https://share.temu.com/aKDWCxdUNHB ⚡ 5V Step-Down Converter for USB Output: https://share.temu.com/2Eog2zNvclB 🔌 Battery Charging Module: https://share.temu.com/jpkbFgnTTIB 🔘 On/Off Switch: https://share.temu.com/gBGhS6QQ6dB 🔗 Connectors: https://share.temu.com/EVXqOy8Bx0B https://share.temu.com/5mkueNSa2rB Watch the Full Build & Assembly Video https://youtu.be/w0TPBjBee2A The video covers the cell layout, enclosure assembly, wiring, and load tests. See the Documentation section for the wiring diagrams.