18.2Wh LG-INR21700-M50LT Battery

LG-INR21700-M50LT

The LG-INR21700-M50LT model is one of the newer models on the market. It could be used in high-performance devices like E-scooter.

HIGHLIGHTS OF LG-INR21700-M50LT

Nominal Voltage: 3.96V
Nominal Energy: 18.2Wh
Standard Constant Charging Current: 1,440mA
Standard Constant Charging Voltage: 4.2V
Standard Charging Cut-off Current：50mA
Max. Charge Current: 3,360mA

MIND

Do not incinerate;
Do not disassemble;
Do not short positive and negative contacts;
Do not expose to heat;
Do not completely discharge;
Do not use force to install a li-ion battery;
Use only high quality battery charger;
Charge fully before first use;
Store in cold and dry place at approximately nominal voltage

APPEARANCE

There shall be no such defects as deep scratch, crack, rust, discoloration or leakage, which may adversely affect the commercial value of the cell.
Diameter : ≤ 21.44 mm

Diameter is defined as the largest data value measured on the “A” area of a cylindrical cell.

Height : ≤ 70.60 mm

TTS(Top to shoulder) : 0 +0.00/-0.55 mm

Weight: 68.2 ± 1.0g (TBD)

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Nominal Specification of LG INR21700 m50LT

Item	Condition	Specification
Energy*	By Std. charge/discharge	Nom. 18.2 Wh
Energy*	By Std. charge/discharge	Min. 17.6 Wh
Nominal Voltage	Average by Std. charge/discharge	3.69V
Shipping Cell Voltage**	At ex-factory state.	3.591 ± 0.01V
Standard charge	Constant current (1C=4800mA)	0.3C (1,440mA)
	Constant voltage	4.20V
	End condition(Cut off)	50mA
	Charging time	4h
Max. Charge Voltage	In all measurements and operations of the cell, the minimum allowable closed circuit voltage shall not exceed the following value	4.20V
Max. Charge Current (complete full charge)	0 ~ 25ºC (Atmosphere)	0.3C (1,440mA)
Max. Charge Current (complete full charge)	25 ~ 45ºC (Atmosphere)	0.7C (3,360mA)
Standard Discharge	Constant current	0.2C (960mA)
Standard Discharge	End voltage(Cut off)	2.50V
Min. Discharge Voltage	In all measurements and operations of the cell, the minimum allowable closed circuit voltage shall not be below the following value	2.50V
Max. Discharge Current	-20 ~ 10ºC	0.5C (2,400mA)
	10 ~ 25ºC	3.0C (14,400mA)
	25 ~ 55ºC	1.5C (7,200mA)
Over Voltage Protection	Cell voltage shall not exceed the following value to prevent any safety events. And cell performance can’t be guaranteed between 4.20V and 4.25V	4.25V
Under Voltage Protection	Cell voltage shall not drop below the following value to prevent any safety events. And cell performance can’t be guaranteed between 2.50V and 2.00V	2.00V
Weight	With Tube and Washer	68.2 ± 1.0g (TBD)
Operating Temperature(Atmosphere or Chamber Temperature)	Charge	0 ~ 45ºC
	Discharge	-20 ~ 55ºC
	Max. cell surface temperature should be below 70℃ for discharging.(Temperature cut-off function is needed on BMU under 70℃of cell surface temperature.)
Storage Temperature(for shipping state)	1 month	-20 ~ 55ºC
	3 month	-20 ~ 45ºC
	1 year	-20 ~ 25ºC
	Recovery capacity after the storage ≥ 80% of minimum energy(or capacity)
Storage Temperature (for full charged state)	1 month	-20~ 45 ºC
	6 month	-20~ 25 ºC
	Recovery capacity after the storage ≥ 80% of minimum energy(or capacity)
Storage Humidity	-	Under 60%

Performance Specification

Test condition

4.1.1 Standard Charge

Unless otherwise specified, “Rated Charge” shall consist of charging at constant current of 0.3C(1440mA).The cell shall then be charged at constant voltage of 4.20V while tapering the charge current. Charging shall be terminated when the charging current has tapered to 50mA. For test purposes, charging shall be performed at 25ºC.

4.1.2 Standard Discharge

“Standard Discharge” shall consist of discharging at a constant current of 0.2C(960mA) to 2.50V. Discharging is to be performed at 25ºC unless otherwise noted (such as capacity versus temperature).

4.1.3 Charge / discharge condition

Cells shall be charged at constant current of 0.3C(1,440mA) to 4.10V with end current of 1/20C. Cells shall be discharged at constant current of 0.5C(2,400mA) to 2.85V. Charging and discharging are to be performed at 25 ºC unless otherwise noted (such as capacity versus temperature). Cells are to rest 10 minutes after charge and 20 minutes after discharge at 25ºC.

Electrical Specification

Item	Condition		Specification
Storage Characteristics	Cells shall be charged per 4.1.1 and stored in a temperature-controlled environment at 25ºC for 30 days. After storage, cells shall be discharged per 4.1.2 to obtain the remaining capacity*.		Energy remain rate≥ 90% of Whmin in 4.2.3
High Temperature Storage Test	Cells shall be charged per 4.1.1 and stored in a temperature-controlled environment at 55ºC for 1 week. After storage, cells shall be discharged per 4.1.2 and cycled per 4.1.1 and 4.1.2 for 3 cycles to obtain recovered capacity		No leakage, Energy recovery rate≥ 80% of Whmin in 4.2.3
Temperature Dependency of Energy	Cells shall be charged per 4.1.1 at 25ºC and discharged per 4.1.2 at the following temperatures.		-
	Charge	Discharge	Energy
	25ºC	-10ºC	≥70% of Whmin in 4.2.3
		0ºC	≥80% of Whmin in 4.2.3
		25ºC	≥100% of Whmin in 4.2.3
		55ºC	≥95% of Whmin in 4.2.3

Prohibitions

Do not connect battery directly to cigarette/aux jack in automobiles. Use only approved chargers.
Do not charge with constant current more than maximum charge current.
Do not charge the cell, which was discharged equal to 1V or under.
Do not disassemble or reconstruct the battery.
Do not throw or cause impact.
Do not pierce a hole in the battery with sharp things. (such as nail, knife, pencil, drill)
Do not use with other batteries or cells.
Do not solder on battery directly.
Do not press the battery with overload in manufacturing process, especially ultrasonic welding.
Do not use old and new cells together for packing.
Do not expose the battery to high heat. (such as fire)
Do not put the battery into a microwave or high pressure container.
Do not use the battery reversed.
Do not connect positive(+) and negative(-) with conductive materials (such as metal, wire)
Do not allow the battery to be immerged in or wetted with water or sea-water.
Do not give immoderate heat and force to battery cell during a welding process of metal plates on it.

How to Custom 21700 Battery Pack

We have the unique ability to develop custom 21700 battery pack to fit your needs. Our expert team of chemists, engineers, and manufacturers who use proven chemistry and production methods that will get from spec to production fast. Slim, flexible, more powerful.

WHAT WE CUSTOM

Custom Voltage Range: 3V ~ 120V
Custom Discharge Current: 0.2C ~ 120C (0.01A-1000A)
Custom BMS: Size, Features, Communication, Cut-off, Temperature
Custom Battery Size: Starting 0.5mm Thickness
Battery Temperature from -40°C–85°C
Custom Connector: JST/Molex/Hirose/Anderson/TE/Amphenol Etc

WHY CHOOSE US

Custom 21700 Battery Pack, MOQ 100 pcs
Custom Samples as fast as 3 Days
Strict Quality Control, No Safety Concerns Ever
Instant Customer Support, Solve Any Problem in Time.

Requirements

Let us know your size limitations and anticipated capacity or Hours needed for your project.

Design

We will send datasheet to you or New design according to your requirement.

Prototype

We will start making samples for you if all things are set.

Wait for Samples

It takes 3-10 days to make custom samples, Just have a little patience.

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