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Discussion History

Battery Pack

Assembly

36V 14Ah lithium pack, 40 18650 cells in 10S4P, locked into the downtube with a key. A full specification article for this item is being written. Meanwhile its bill of materials and connections are below.

Battery Pack parts and their functions

6 top-level parts · 111 parts in total · full bill of materials below
Battery Pack parts diagram: 1 li-ion cell, 18650, 2 cell holder, 3 BMS board, 4 battery case, 5 battery lock, 6 connector. 111 parts in 6 top-level items.
Battery Pack parts diagram. Numbers match the table below; each box is one top-level part or assembly with what it contains.
#PartQtyWhat it does
1 Li-ion Cell, 18650 40× 10S4P cell array
2 Cell Holder 1×
3 BMS Board 4 parts 1× Battery management board
4 Battery Case 1×
5 Battery Lock 1×
6 Connector 2× Power and balance leads

3D model

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Build & assembly graph

expand / collapse · shared sub-assemblies converge · links to related products · est. labour
product / assembly shared across products atomic part related product

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Bill of materials for Battery Pack

6 top-level lines · 10 rows shown · 111 parts total · indented to 3 levels
# Item / sub-assembly Part no. Qty/assy Ext. qty Parts Type
1 Li-ion Cell, 18650 li-cell-18650 40× 40 · part
2 Cell Holder cargo-bicycle-cell-holder 1× 1 · part
3 BMS Board 4 parts cargo-bicycle-bms-board 1× 1 66 assembly
3.1 Bare PCB pcb-bare 1× 1 · part
3.2 Microcontroller mcu 1× 1 · part
3.3 SMD Passive (R/C/L) smd-passives 60× 60 · part
3.4 BMS Power MOSFET cargo-bicycle-bms-mosfet 4× 4 · part
4 Battery Case cargo-bicycle-battery-case 1× 1 · part
5 Battery Lock cargo-bicycle-battery-lock 1× 1 · part
6 Connector connector 2× 2 · part

Where the battery pack is used

1 product across 1 domain contain it, directly or inside a sub-assembly

Used in 1 assembly

Sourcing: possible vendors

Browse the supplier directory → Prices, MOQ, and lead times are algorithmic estimates, not quotes, and not claims about these companies. Company mappings are curated by keyword; est. price band $1–$500. How estimates work
VendorHQSpecialtyMOQLead time
🇨🇳CATL
catl.com ↗
Ningde, CN Li-ion cell & pack maker 5,000 cells 8–12 wks
🇨🇳EVE Energy
evebattery.com ↗
Huizhou, CN Li-ion cell maker 5,000 cells 8–12 wks
🇮🇳Amara Raja
amararaja.com ↗
Tirupati, IN Batteries & energy 5,000 cells 8–12 wks
🇸🇬Durapower
durapowergroup.com ↗
Singapore Li-ion battery systems 5,000 cells 8–12 wks
🇨🇳BYD
byd.com ↗
Shenzhen, CN EV & battery manufacturer 5,000 cells 8–12 wks