Product Introduction
The Bluetooth Earphone Battery 300mAh is a small lithium battery that powers Bluetooth earphones. It is available for bulk orders and customization.
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Items |
Specifications |
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Batteries |
3.7v 300mah lipo battery |
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Charge voltage |
4.2V |
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Nominal voltage |
3.7V |
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Nominal capacity |
280mAh 0.2C Discharge |
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Charge current |
Standard Charging: 0.5C Rapid charge: 1.0C |
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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 |
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Charging time |
Standard Charging: 2.75hours(Ref.) Rapid charge: 2hours(Ref.) |
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Max.charge current |
1.0C |
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Max.discharge current |
1.0C |
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Discharge cut-off voltage |
2.75V(0.2C) |
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Perating temperature |
ChCharging: 0 °C ~45 °C Discharging: 0 °C ~45 °Carging: 0 °C ~45 °C |
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Discharging: Storage temperature0 °C ~45 °C |
-10°C~ +45 °C |
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Dimension |
Length: 50±2mm (not including tabs) Width: 20±0.5mm Thickness:10±0.2mm |
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Drop Test |
The cell is to be dropped from a height of meter twice onto concrete ground. No fire, no leakage |
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Cycle time |
≥300times |
Product Features
Fast Charging: Supports 1C fast charging, fully charging in approximately 2 hours.
Safe and Reliable: The Bluetooth Earphone Battery 300mAh features built-in overcharge, over-discharge, and short-circuit protection to prevent swelling and overheating.
Long Lifespan: ≥300 charge/discharge cycles, with a lifespan of 2-3 years.
Why We Are the Leading Manufacturer of Bluetooth Earphone Battery 300mAh
Strict Quality Control
Comprehensive quality control throughout the entire process, including raw material selection, production process monitoring, 100% functional testing, multi-dimensional structural inspection, and pre-shipment aging testing, ensuring the safety and reliability of every battery.
Advanced Production Equipment
Equipped with hundreds of high-precision automated machines, including winding machines, mixers, vacuum ovens, automatic slitting machines, and fully automated packaging equipment.
Comprehensive Certification System
Holding CCC certification, ISO9001 quality system certification, UL certification, KC certification, and RoHS standard certification.
Diverse Product Lines
Offering TWS batteries, 30-90 series, fast charging, 1-3C series, and customized batteries to meet the needs of various end devices.
Frequently Asked Questions
Q: Can I place a sample order? What is the sample delivery time?
A: Yes, sample delivery is 3–10 days, allowing for performance and quality testing.
Q: What is the delivery time for bulk orders?
A: 2–7 days for in-stock items, approximately 25–30 days for mass production.
Q: How is it shipped?
A: DHL/TNT/FedEx/UPS or your preferred freight forwarder. Photos of the packaging and tracking number will be provided.
Q: How does the Bluetooth Earphone Battery 300mAh work?
A: It releases electrical energy through a lithium-ion chemical reaction, providing a stable current to the Bluetooth earphones and ensuring continuous playback.
Q: Which devices is it compatible with?
A: It is compatible with TWS earphones, wireless Bluetooth earphones, and other small audio devices.
Q: How do I install the battery?
A: Insert the Bluetooth Earphone Battery 300mAh into the earphone's battery compartment, ensuring the positive and negative terminals are correctly connected.
Q: How do I clean the battery?
A: Wipe the casing with a dry cloth, avoiding liquid contact to prevent short circuits and damage.
Q: What are the storage conditions?
A: Keep in a dry, room-temperature environment, avoiding high temperatures and humidity.
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