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Lithium Polymer Battery Cell

OEM 443441 3.7V 650mAh Lithium Polymer Battery with 500 Cycles Life for Electric Toothbrushes

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OEM 443441 3.7V 650mAh Lithium Polymer Battery with 500 Cycles Life for Electric Toothbrushes

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:

LP802040 3.7v 650mAh+NTC sp...26.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:

3.7V 650mAh lithium polymer battery

Lithium polymer battery for electric toothbrushes

OEM 443441 battery with 500 cycles

Product Description

OEM Lithium Cell 443441 3.7V 650mAh 2.4Wh Rechargeable Li-polymer Battery For Electric Toothbrushes

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

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.

Applications

Smart Wearables: smart watches, fitness trackers, health monitors
Portable Audio: Bluetooth earphones, mini speakers, headset charging cases
Personal Care: electric toothbrushes, facial tools, mini massagers
Smart Devices: remote controls, electronic toys, LED lights, tracking devices
Home & Security: smart doorbells, wireless sensors, small surveillance gadgets
Industrial & Medical: portable testers, small medical devices, handheld instruments

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

Product Images

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

Hanna

Lithuania Oct 17.2023

Helpful (7800)

We cooperated with RESKY more than 10years, good communication, fast reponse for our any requirements. Reliable supplier.

Maroun

France Aug 17.2023

Helpful (7900)

We cooperated several lipo battery cell models, they are working very well. Recommened.

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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