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Lithium Polymer Battery Cell

702040 3.7V 500mAh Lithium-ion Polymer Battery Cell Rechargeable Lipo Battery for Dog Trainers and Consumer Electronics

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702040 3.7V 500mAh Lithium-ion Polymer Battery Cell Rechargeable Lipo Battery for Dog Trainers and Consumer Electronics

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

rechargeable lipo battery for dog trainers

lithium-ion battery cell for electronics

Product Description

Lithium-ion Polymer Battery Cell 702040 3.7V 500mAh 1.85Wh Rechargeable Lipo Batteries For Dog Trainers

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

Product Specifications

Attribute	Value
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

Comparison: Lithium Battery vs LiFePO4 Battery

Cycle Life and Longevity

Lithium-ion Batteries: The cycle life can vary depending on chemistry and manufacturing process, with some types experiencing gradual capacity decline over cycles.
LiFePO4 Batteries: Known for long cycle life and high durability, maintaining high capacity over many charge-discharge cycles.

Cost

Cost varies by production scale, raw material prices, and demand.
LiFePO4 batteries may have higher initial cost but offer longer cycle life and lower maintenance requirements.

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: aroma diffusers, recorders, scooters, electric shavers, karaoke microphones, electronic navigation devices, etc.

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

Mofak

United Kingdom Dec 5.2025

Helpful (1500)

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

Olga

Belarus Apr 23.2025

Helpful (4300)

Recommend Resky as a reliable lithium polymer battery supplier.

SIRIEYS

France Jul 19.2023

Helpful (1w+)

After many discharging/charging cycles of the samples LP604070 2000mah you sent…..we are satisfied !

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