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Lithium Polymer Battery Cell

Factory Single Lithium Battery Cell 443441 3.7V 650mAh Rechargeable Lipo Battery For Portable Beauty

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Factory Single Lithium Battery Cell 443441 3.7V 650mAh Rechargeable Lipo Battery For Portable Beauty

Brand Name:	RESKY
Model Number:	LP443441
MOQ:	100pcs
Price:	Negotiable
Packaging Details:	Paper box
Payment Terms:	Western Union,T/T

Detail Information

Product Description

Ratings & Reviews

Detail Information

Place of Origin:

China

Certification:

CE, RoHS, MSDS, Un38.3

Document:

LP603040 750mAh 3.7v lithiu...on.pdf

Nominal Capacity:

650mAh

Charging Current:

0.2c

Continuous Discharging Current:

0.5c

Max Discharging Current:

Weight:

10g

Cycle Life:

500cycles

Warranty:

12months

Shipping:

UPS, DHL, FedEx, TNT, By Air, By Sea, Special Line

Connector:

Jst, Molex....

Specification:

4.4*34*41mm

Supply Ability:

50000pcs/day

Highlight:

443441 lithium polymer battery cell

3.7V 650mAh rechargeable battery

portable beauty device lipo battery

Product Description

Single Lithium Battery Cell 443441 3.7V 650mAh Rechargeable Lipo Battery For Portable Beauty

High-performance LiPo battery designed specifically for smart watches and compact electronic devices.

Product Specifications

Attribute	Value
Nominal Capacity	650mAh
Charging Current	0.2C
Continuous Discharging Current	0.5C
Max Discharging Current	1C
Weight	10g
Cycle Life	500 cycles
Warranty	12 months
Shipping	UPS, DHL, FedEx, TNT, by Air, by Sea, Special Line
Connector	JST, Molex
Specification	4.43441mm

Technical Specifications

Item	Specification
Battery Type	3.7V 650mAh LiPo Battery
Charge Voltage	4.2V
Nominal Voltage	3.7V
Nominal Capacity	650mAh @ 0.2C Discharge
Charge Current	Standard: 0.5C, Rapid: 1.0C
Standard Charging Method	0.5C CC charge to 4.2V, then CV charge till current ≤0.05C
Charging Time	Standard: 2.75 hours, Rapid: 2 hours
Max Charge Current	1.0C
Max Discharge Current	1.0C
Discharge Cut-off Voltage	2.75V (0.2C)
Operating Temperature	Charging: 0°C ~45°C, Discharging: 0°C ~45°C
Storage Temperature	-10°C ~ +45°C
Dimensions	Length: 41±2mm, Width: 34±0.5mm, Thickness: 4.4±0.2mm
Drop Test	Dropped from 1m twice onto concrete - no fire, no leakage
Cycle Life	≥500 times

Battery Cell with PCM Measurements

Battery Cell Measurements

Voltage Comparison: 3.7V vs 3.8V Batteries

3.7V Lithium Battery

Nominal discharge platform voltage is 3.7V, full charge voltage typically 4.2V, discharge cutoff voltage generally 3.0V.

3.8V Lithium Battery

Nominal discharge platform voltage is 3.8V, with some models reaching full charge voltage of 4.35V. Discharge cutoff voltage mostly set at 3.0V or slightly higher.

Energy Density

3.8V batteries typically use advanced cathode materials, allowing them to store more energy in the same volume or weight, resulting in higher energy density.

Cost & Safety

3.8V batteries are more expensive due to complex materials and processes. 3.7V batteries are technologically mature with lower costs and easier safety assurance.

Advantages of 3.7V Li-Polymer vs 3.2V LiFePO4 (LFP) Li-Polymer Batteries

Higher nominal voltage3.7V lithium polymer provides higher working voltage than 3.2V LiFePO4, delivering stronger power output and better performance in small electronics.

Higher energy density in same size

Traditional 3.7V li-polymer offers higher capacity and energy density in the same dimensions, supporting longer runtime for compact devices.

Wider application in consumer electronics

Matches the charging and discharging logic of most small smart devices, with better compatibility and simpler circuit design.

More mature mass production Stable supply chain, lower cost, and higher consistency for mass production compared to LiFePO4 polymer in small-capacity sizes.

Better low-temperature discharge performance

Performs more stably in cold environments than most 3.2V LiFePO4 batteries, making it suitable for outdoor and portable devices.

Applications

Consumer Electronics: Bluetooth speakers, headphones, smart bracelets, GPS trackers, portable medical devices
Smart Home: Smart door locks, sensors, cameras, remote controls
Electric Toys/Small Appliances: Electric toothbrushes, shavers, robot vacuums, handheld fans

Quality Assurance

A-Grade Battery Cells

High-quality materials, sufficient capacity, long battery life, safe and non-explosive

High-Performance Protection Board

Stable voltage output, prevents overcharging, over-discharging, and short circuit

International Standard Lead Wire

High-quality wire with strong conductivity, supports high-probability discharge

Wide Nickel Tabs

Excellent thermal and electrical conductivity, reduces heat generation, ensures stable current output

Battery pictures:

Factory Single Lithium Battery Cell 443441 3.7V 650mAh Rechargeable Lipo Battery For Portable Beauty 6

Factory Single Lithium Battery Cell 443441 3.7V 650mAh Rechargeable Lipo Battery For Portable Beauty 7

Factory Single Lithium Battery Cell 443441 3.7V 650mAh Rechargeable Lipo Battery For Portable Beauty 8

Factory Single Lithium Battery Cell 443441 3.7V 650mAh Rechargeable Lipo Battery For Portable Beauty 9

Factory Single Lithium Battery Cell 443441 3.7V 650mAh Rechargeable Lipo Battery For Portable Beauty 10

Ratings & Review

Overall Rating

5.0

Based on 50 reviews for this supplier

Rating Snapshot

The following is the distribution of all ratings

5 stars

100%

4 stars

3 stars

2 stars

1 stars

All Reviews

Mofak

United Kingdom Dec 5.2025

Helpful (1500)

Good quality! Easy communication, fast response, fast delivery, good supplier! Recommend.

Hanna

Belarus Sep 10.2025

Helpful (5600)

Working with RESKY more than 10years, stable quality, fast delivery, competitive price. Recommended.

Michael

France Dec 28.2022

Helpful (1w+)

Tested 604070 3.7v 2000mAh lithium polymer battery cell with many charging and discharging cycles, they working very good, capacity keeping very stable.

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