products details

Home > Products >

Lithium Polymer Battery Cell

3.7V 500mAh 702040 Lithium Polymer Battery for Portable Mini Fans and Solar Devices

All Category

Lithium Polymer Battery Cell

RC Lithium Battery

Li-Ion Battery Pack

Lithium Polymer Battery Pack

Heated Lithium Battery

Electric Bike Battery

RC Balance Charger

Rechargeable Battery Charger

RC Accessories

Mrs. Alice

admin@szresky.com

0086 13530058480

0086 13530058480

Contact Now

3.7V 500mAh 702040 Lithium Polymer Battery for Portable Mini Fans and Solar Devices

Brand Name:	RESKY
Model Number:	LP702040
MOQ:	100pcs
Price:	Negotiable
Packaging Details:	Standard export package
Payment Terms:	T/T,Western Union

Detail Information

Product Description

Ratings & Reviews

Detail Information

Place of Origin:

China

Certification:

CE, RoHS, MSDS, Un38.3

Document:

LP902040 750mAh with PCB sp...25.pdf

Nominal Capacity:

500mAh

Charging Current:

0.2c

Continuous Discharging Current:

0.5c

Max Discharging Current:

Weight:

Cycle Life:

500cycles

Warranty:

12months

Shipping:

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

Specification:

7*20*40mm

HS Code:

8507600090

Supply Ability:

50000pcs/day

Highlight:

3.7V 500mAh lithium polymer battery

702040 LiPo battery for mini fans

rechargeable lithium battery for solar devices

Product Description

Power Lipo Battery Cell 702040 3.7V 500mAh Solar Lithium Ion Polymer Batteries

High-performance lithium-ion polymer battery cell designed for various low-power applications including portable mini fans and dog training devices.

Product Specifications

Nominal Capacity	500mAh
Charging Current	0.2c
Continuous Discharging Current	0.5c
Max Discharging Current	1c
Weight	7g
Cycle Life	500 cycles
Warranty	12 months
Shipping	UPS, DHL, FedEx, TNT, by Air, by Sea, Special Line
Specification	7×20×40mm
HS Code	8507600090

Technical Details

No.	Items	Specifications
1	Batteries	3.7V 500mAh LiPo battery
2	Charge voltage	4.2V
3	Nominal voltage	3.7V
4	Nominal capacity	500mAh 0.2C Discharge
5	Charge current	Standard Charging: 0.5C Rapid charge: 1.0C
6	Standard Charging method	0.5C CC charge to 4.2V, then CV charge till charge current decline to ≤0.05C
7	Charging time	Standard Charging: 2.75 hours (Ref.) Rapid charge: 2 hours (Ref.)
8	Max. charge current	1.0C
9	Max. discharge current	1.0C
10	Discharge cut-off voltage	2.75V (0.2C)
11	Operating temperature	Charging: 0°C ~ 45°C Discharging: 0°C ~ 45°C
12	Storage temperature	-10°C ~ +45°C
13	Dimension	Length: 40±2mm (not including tabs) Width: 20±0.5mm Thickness: 7±0.2mm
14	Drop Test	The cell is to be dropped from a height of meter twice onto concrete ground. No fire, no leakage
15	Cycle time	≥500 times

Advantages of 3.7V Li-Polymer vs 3.2V LiFePO4 Batteries

Higher nominal voltage: 3.7V 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

Smart Wearable Devices:

smart bracelets, smart glasses, VR all-in-one machines, adult products, etc.

Consumer Electronics:

Bluetooth headsets, remote controls, mini fans, Bluetooth speakers, selfie sticks, MP3/MP4 players

Home and Personal Care Appliances:

smart masks, beauty devices, teeth whitening devices, neck massagers, neck fans, eye massagers

Security and Positioning Equipment:

alarms, fingerprint locks, child locators, thermometers, GPS trackers

Industrial and Professional Instruments:

portable printers, laser levels, walkie-talkies, PDAs, medical instruments, hearing aids, detectors

Other Low-Power Devices: