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Lithium Polymer Battery Cell

Lithium Battery Cell 502035 3.7v 300mAh Rechargeable Solar Li-Polymer Battery For Bluetooth Earphone

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Lithium Battery Cell 502035 3.7v 300mAh Rechargeable Solar Li-Polymer Battery For Bluetooth Earphone

Brand Name:	RESKY
Model Number:	LP502035
MOQ:	10pcs
Price:	Negotiable
Packaging Details:	Paper box
Payment Terms:	T/T,Western Union

Detail Information

Product Description

Ratings & Reviews

Detail Information

Place of Origin:

China

Certification:

CE, RoHS, MSDS, Un38.3

Capacity:

350mAh

OEM Service:

YES

Electrolyte:

Li(Nicomn)O2

Cycle Life:

500times

Warranty:

12months

Shipping:

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

Lead Time:

Within 3-10 Workdays

Connector:

Jst, Molex....

Specification:

5*20*35mm

Weight:

Supply Ability:

50000pcs/dat

Highlight:

Rechargeable 3.7v Lithium Battery Cell

300mAh Lithium Polymer Battery Cell

Bluetooth Earphone Lithium Battery Cell

Product Description

Lithium Battery Cell 502035 3.7v 300mAh Rechargeable Solar Li-Polymer Battery For Bluetooth Earphone

Product Attributes

Attribute	Value
Capacity	350mAh
OEM service	YES
Electrolyte	Li(Nicomn)O2
Cycle Life	500times
Warranty	12months
Shipping	UPS, DHL, FedEx, TNT, by Air, by Sea, Special Line
Lead Time	Within 3-10 Workdays
Connector	Jst, Molex....
Specification	52035mm
Weight	4g

Technical Specifications

NO.	Items	Specifications
1	batteries	3.7v 300mah lipo battery
2	Charge voltage	4.2V
3	Nominal voltage	3.7V
4	Nominal capacity	300mAh 0.2C Discharge
5	Charge current	Standard Charging:0.2C Rapid charge: 1.0C
6	Standard Charging method	0.5C CC(constant current)charge to 4.2V, then CV(constant voltage 4.2V)charge till charge current decline to ≤0.05C
7	Charging time	Standard Charging:2.75hours(Ref.) Rapid charge: 2hours(Ref.)
8	Max.charge current	0.5C
9	Max.discharge current	1.0C
10	Discharge cut-off voltage	2.5V0.25V(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:35±0.5mm (not including tabs) Width:20±0.5mm Thickness:5±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	≥800times

Key Advantages

Safety performance: Built-in protection board, supports short circuit protection, overcharge protection, over-discharge protection, and overcurrent protection to avoid battery damage or safety hazards.
Wide temperature adaptability: Can work stably in an environment of -20°C to 60°C, meeting the needs of various scenarios.
High charging efficiency: Supports standard 0.5C charging (constant current to 4.25V and then constant voltage to 4.2V), compatible with fast charging (1C current).

Applications

Consumer electronic equipment: Bluetooth headsets, Bluetooth speakers, MP3/MP4 players, reading pens, voice recorders and other small portable devices.
Medical and wearable equipment: cervical massagers, smart bracelets, blood glucose meters and other medical equipment that require lightweight power support.
Outdoor and industrial equipment: Walkie-talkies, GPS locators, handheld electric drills and other outdoor tools that require high temperature resistance.

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.

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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