21700 Battery (Cell), Li-ion cell

A 21700 battery (Li-ion cell) is up to 21.55 mm in diameter and up to 70.8 mm long. Modeled as simplified STEP files.

How these parts are made, and what the levels mean: read the method

• Also searched as: 21700 battery
• Model id: li-ion-cells-21700
• Standard: Li-ion cell · size 21700

Files

Part key	Simplified
li-ion-cells-21700	STEP

Dimensions

Symbol	Name	min	nom	max	Modeled	Rule	Level
D	Cell diameter			21.55	21.55	single limit (max), modeled at the limit	L1
H	Cell height			70.8	70.8	single limit (max), modeled at the limit	L1

Drawing

As a PDF: CC-LIION-SZ-21700.pdf.

From the Samsung SDI INR21700-50E data sheet

As written on the maker's data sheet for the Samsung SDI INR21700-50E (samsung-inr21700-50e): one product's ratings, which the cell envelope on this page does not depend on.

• Standard discharge Capacity: Min 4,900mAh
• Nominal Voltage: 3.6V
• Cell Weight: 69g max

From the Molicel INR-21700-P42A data sheet

As written on the maker's data sheet for the Molicel INR-21700-P42A (molicel-inr21700-p42a): one product's ratings, which the cell envelope on this page does not depend on.

• Capacity Typical: 4200 mAh
• Cell Voltage Nominal: 3.6 V
• Weight: 70 g (Max)

From the LG Chem INR21700 M50 data sheet

As written on the maker's data sheet for the LG Chem INR21700 M50 (lg-inr21700-m50): one product's ratings, which the cell envelope on this page does not depend on.

• Energy: Nominal 18.20Wh
• Nominal Voltage: Average 3.63V
• Weight: Without washer 68.0 ± 1.0 g

The 21700 battery beside the 18650 and the 26650

The 21700 is number 4 of the 6 Li-ion cell batteries published here, listed from 14500 to 32700.

• Cell diameter (D): up to 21.55 mm on the 21700 battery, against up to 18.6 mm on the 18650 and up to 26.5 mm on the 26650.
• Cell height (H): up to 70.8 mm on the 21700 battery, against up to 65.3 mm on the 18650 and up to 65.7 mm on the 26650.

Other sizes

• One size smaller: 18650 Battery (Cell), Li-ion cell, up to 18.6 mm diameter, up to 65.3 mm long.
• One size larger: 26650 Battery (Cell), Li-ion cell, up to 26.5 mm diameter, up to 65.7 mm long.

Documents

• CC-LIION-DS-21700.pdf: 21700 datasheet: values with levels, sources
• CC-LIION-SZ-21700.pdf: 21700 drawing: this size's values on the views
• parts.json: the part record of this size (the platform contract)

Sources

lg-inr21700-m50, molicel-inr21700-p42a, samsung-inr21700-50e. Full citations: the method page and this size's datasheet.

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