Li-ion

3.7V LIR1654 120mAh Lithium Battery Cell for Wearable devices, Bluetooth headsets, Smartwatches, Medical monitoring devices

Parameter	Specification
Nominal capacity	120mAh
Nominal voltage	3.6V
Inner Impedance	≤350 mΩ
Discharge cut-off Voltage	2.75V
Charge current	0.2C mA
Max continuous charge current	2C mA
Charge Voltage	4.2V
Maximum charge voltage	4.25V
Charging time	5 h
Fast recharging time	0.3 h
Standard Discharge Circuit	0.5C mA
Maximum Discharge Current	1C mA
Weight	3.50±0.2 g
Operating Temperature Range (Charge)	0～+45℃
Operating Temperature Range (Discharge)	-20～+60℃
Storage temperature	-20～+60℃

✓Certification supportCB, CE, UL, UN38.3, MSDS, IEC61000, IEC62133, EU2023/1542

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Product overview

3.7V LIR1654 120mAh Lithium Battery Cell for Wearable devices, Bluetooth headsets, Smartwatches, Medical monitoring devices | Battery Manufacturers in China & Battery Supply Factory

3.7V LIR1654 120mAh lithium battery, compact, rechargeable, long-lasting, ideal for wearables, smart sensors, and small electronics.

01

Compact & Rechargeable Power

The LIR1654 coin lithium battery is small, lightweight, rechargeable, and delivers stable 3.7V output. It offers high energy density, long cycle life, and reliable performance, making it ideal for wearable devices, smart sensors, medical monitors, and other compact electronics.

02

Certifications & Safety

The 3.7V LIR1654 battery meets international safety and quality standards. It is CE, RoHS, and UN38.3 certified, ensuring reliable performance, safe charging, and compliance for wearable devices, smart sensors, and small electronics.

Technical insight

Product and application details

Bluetooth headsets

Its lightweight 3.5g form factor ensures comfort during extended listening sessions without causing neck strain.

Digital thermometers

The low self-discharge rate maintains accuracy over long idle periods between sporadic medical usage.

Electronic toys

Robust discharge capabilities handle the high current spikes demanded by motors and LED lights.

Medical monitoring devices

Strict charge voltage limits of 4.25V guarantee safety for sensitive patient monitoring equipment.

Mini GPS trackers

Compact dimensions fit seamlessly into small enclosures for discreet location tracking in the field.

Remote controls

Low internal impedance of 350mΩ provides efficient power delivery for consistent signal transmission.

Small IoT devices

Wide discharge temperature range down to -20℃ ensures functionality in outdoor sensor deployments.

Wearable devices

Slim profile and 3.6V nominal voltage integrate easily into compact smartwatch chassis designs.

Factory capability

VTCBATT Production and Service

VTCBATT not only focuses on customized design and excellent service to meet the diverse demands of different customers, but also devotes itself to precise and standardized manufacturing in every process to ensure the highest-quality batteries. Meanwhile, VTCBATT provides comprehensive support from pre-sales to after-sales, focusing on customer feedback to establish long-term and win-win cooperation. VTCBATT professional sales and technical engineer teams will be your custom battery experts for reliable and responsive project support.

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Modern Manufacturing

From raw materials mixing to cell testing, VTCBATT adopts automated manufacturing processes to improve production efficiency and battery quality, safety, and reliability. The manufacturing process is monitored and tested before material moves to the next procedure.

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Trusted by Global Customers

Over the past 20 years, VTCBATT has built partnerships with customers in more than 50 countries. Reliable quality, responsive service, and tailored battery solutions support long-term cooperation with equipment manufacturers, distributors, and brands.