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Discussion History

Battery Pack

Assembly

Series-parallel Li-ion pack, commonly 16S-24S (67-100V nominal), built from 18650 or 21700 cells with a balancing BMS and welded nickel interconnects. 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

8 top-level parts · 209 parts in total · full bill of materials below
Battery Pack parts diagram: 1 li-ion cell, 18650, 2 battery management system, 3 nickel interconnect strip, 4 cell holder, 5 pack insulation wrap, 6 pack discharge leads, 7 connector, 8 pack fuse. 209 parts in 8 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 80× 16S5P configuration
2 Battery Management System 7 parts 1× Battery management system
3 Nickel Interconnect Strip 1× Spot-welded interconnect
4 Cell Holder 4× Plastic cell spacers
5 Pack Insulation Wrap 1× Heat-shrink and insulation
6 Pack Discharge Leads 1× Main discharge leads
7 Connector 2× Pack-to-board connectors
8 Pack Fuse 1× Pack protection fuse

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

8 top-level lines · 15 rows shown · 209 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 80× 80 · part
2 Battery Management System 7 parts self-balancing-unicycle-bms 1× 1 119 assembly
2.1 Bare PCB pcb-bare 1× 1 · part
2.2 Microcontroller mcu 1× 1 · part
2.3 Cell-Monitor AFE IC self-balancing-unicycle-afe-ic 1× 1 · part
2.4 Power MOSFET mosfet 8× 8 · part
2.5 SMD Passive (R/C/L) smd-passives 90× 90 · part
2.6 Balance Resistor self-balancing-unicycle-balance-resistor 16× 16 · part
2.7 Winding Thermistor self-balancing-unicycle-temp-sensor 2× 2 · part
3 Nickel Interconnect Strip self-balancing-unicycle-nickel-strip 1× 1 · part
4 Cell Holder self-balancing-unicycle-cell-holder 4× 4 · part
5 Pack Insulation Wrap self-balancing-unicycle-pack-wrap 1× 1 · part
6 Pack Discharge Leads self-balancing-unicycle-pack-leads 1× 1 · part
7 Connector connector 2× 2 · part
8 Pack Fuse self-balancing-unicycle-fuse 1× 1 · part

Where the battery pack is used

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

Used in 1 assembly

Self-Balancing Unicycle

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