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Battery Pack and BMS

Assembly

Li-ion pack of 21700 cells with a battery management system supplying 24-48 VDC to the drives and controller. A full specification article for this item is being written. Meanwhile its bill of materials and connections are below.

Battery Pack and BMS parts and their functions

5 top-level parts · 49 parts in total · full bill of materials below
Battery Pack and BMS parts diagram: 1 li-ion cell, 21700, 2 battery management board, 3 pack enclosure, 4 cell busbar set, 5 connector. 49 parts in 5 top-level items.
Battery Pack and BMS 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, 21700 40× High-discharge cylindrical cells in series-parallel array
2 Battery Management Board 5 parts 1× Cell balancing, protection, and state-of-charge board
3 Pack Enclosure 1× Sealed aluminium cell housing with cooling fins
4 Cell Busbar Set 1× Nickel busbar set linking the cell array
5 Connector 2× Power output and BMS communication connectors

3D model

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Build & assembly graph

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Bill of materials for Battery Pack and BMS

5 top-level lines · 10 rows shown · 49 parts total · indented to 3 levels
# Item / sub-assembly Part no. Qty/assy Ext. qty Parts Type
1 Li-ion Cell, 21700 li-cell-21700 40× 40 · part
2 Battery Management Board 5 parts pallet-shuttle-system-bms-board 1× 1 5 assembly
2.1 Bare PCB pcb-bare 1× 1 · part
2.2 Microcontroller mcu 1× 1 · part
2.3 SMD Passive (R/C/L) smd-passives 1× 1 · part
2.4 Pressure Sensor pressure-sensor 1× 1 · part
2.5 Connector connector 1× 1 · part
3 Pack Enclosure pallet-shuttle-system-pack-enclosure 1× 1 · part
4 Cell Busbar Set pallet-shuttle-system-cell-busbar 1× 1 · part
5 Connector connector 2× 2 · part

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Where the battery pack and BMS 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