Introduction
Battery Of Bluetooth Headphones 300mah integrates a high-density cell and protective PCM to minimize capacity loss, ensuring stable voltage and extended playback for long-term device reliability.
Specification
|
Items |
Specifications |
|
Batteries |
3.7v 300mAh lipo battery |
|
Charge voltage |
4.2V |
|
Nominal voltage |
3.7V |
|
Typical Capacity |
Typical Capacity: 300mAh; Minimum Capacity: 250mAh |
|
Charge current |
Standard Charging: 0.5C Rapid charge: 1.0C |
|
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 |
|
Charging time |
Standard Charging: 2.75hours(Ref.) Rapid charge: 2hours(Ref.) |
|
Max. charge current |
1.0C |
|
Max. discharge current |
1.0C |
|
Discharge cut-off voltage |
2.75V(0.2C) |
|
Operating Temp (Charge) |
0 °C ~45 °C |
|
Operating Temp (Discharge) |
-10°C~ +45 °C |
|
Dimension |
Length: 50±2mm (not including tabs) Width: 20±0.5mm Thickness:10±0.2mm |
|
Drop Test |
The cell is to be dropped from a height of 1.0 meters twice onto concrete ground. No fire, no leakage |
|
Cycle time |
≥300times |
Key Features
Real 300mAh Output
Each cell is verified through standard charge-discharge and capacity grading tests to ensure true 300mAh output and consistent playback performance.
Low Resistance Stability
Internal resistance under 150mΩ helps maintain steady voltage and avoids audio dropouts during use.
Long Cycle Life
High-purity LiCoO2 chemistry supports up to 500 charge cycles with controlled capacity loss.
Built-in Protection IC
Seiko or Ricoh protection board ensures safe charging and prevents overheating or over-discharge.
Reinforced Tab Structure
Ultrasonic welding improves mechanical strength for stable assembly and vibration resistance.
Customization Services
|
Customizable Item |
Customizable Content |
|
Cell Dimensions |
Length, width, thickness |
|
Voltage |
3.7V / 3.8V / 4.2V |
|
Capacity |
Tens to thousands of mAh |
|
Discharge Rate |
1C ~ >3C |
|
Fast Charging |
Standard or rapid charge |
|
Protection Circuit |
Overcharge, over-discharge, overcurrent, short-circuit, temperature control |
|
Smart Management |
Optional Bluetooth, I²C, or SMBus integration |
|
Packaging & Connectors |
Wire length, terminal type, and connector customization |
Application
Bluetooth Audio: Neckband earphones, over-ear headphones, and Hi-Fi wireless monitors.
Smart Wearables: High-end smartwatches and fitness trackers requiring extended standby.
IoT Devices: Mini GPS trackers, smart sensors, and wireless remote controllers.
Medical: Portable pulse oximeters and hearing aids.
Safety & Certifications
The battery is manufactured in compliance with international lithium battery safety and transport standards. It can be supplied with certifications including:
• UN38.3 (Safe Air/Sea Transport)
• MSDS (Material Safety Data Sheet)
• CE / RoHS / IEC62133 Compliance
FAQ
Q: Is the PCM (Protection Circuit Module) included?
A: Yes. All units include a built-in PCM to regulate safety parameters and ensure long-term stability.
Q: Can we request custom lead wires and connectors?
A: Absolutely. We provide turnkey wiring services including specific connector brands (JST, Molex) and custom wire lengths.
Q: What is the typical mass production lead time?
A: For standard cells, 5–7 working days. For customized OEM orders, lead time is typically 15–21 days depending on material specifications.
Q: Do you support engineering samples?
A: Yes, we provide samples for engineering verification and pilot runs to ensure perfect mechanical fit.
Q: What payment methods do you accept?
A: We accept T/T, L/C, PayPal, Western Union, and Alibaba Trade Assurance. Flexible payment terms can be discussed for long-term cooperation.
Q: What is your warranty period?
A: We offer a 12-month warranty. If any quality issue is confirmed, we provide free replacement after evaluation.
Hot Tags: battery of bluetooth headphones 300mah, China battery of bluetooth headphones 300mah manufacturers, suppliers, factory, 70 series battery, Battery Of Bluetooth Headphones 300mah, 3 7 V 320mah Lithium Polymer Battery, Lithium Ion Polymer Battery 3 7 V 240mah
