Descent Battery

Assembly

18650 and 21700 lithium ion battery cell.jpg · Commons ↗ Report photo

Li-ion battery sized for the ~1 kW avionics and valve load of the 12-minute powered descent plus the first lunar night margin.

Direct parts	2
Total parts	122
Used in	1 assembly
Class	Assembly

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Li-ion battery sized for the ~1 kW avionics and valve load of the 12-minute powered descent plus the first lunar night margin. A full specification article for this item is being written. Meanwhile its bill of materials and connections are below.

Descent Battery parts and their functions

2 top-level parts · 122 parts in total · full bill of materials below

Descent Battery parts diagram: 1 li-ion cell, 18650, 2 BMS board. 122 parts in 2 top-level items. — Descent Battery parts diagram. Numbers match the table below; each box is one top-level part or assembly with what it contains.

#	Part	Qty	What it does
1	Li-ion Cell, 18650	120×	Cells (reuse)
2	BMS Board	2×	Redundant management (reuse)

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 Descent Battery

2 top-level lines · 2 rows shown · 122 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	120×	120	·	part
2	BMS Board	bms-board	2×	2	·	part

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Where the descent battery is used

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

Space Systems 1 Lunar Lander

Used in 1 assembly

Electrical Power Subsystem

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

Vendor	HQ	Specialty	MOQ	Lead 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