Introduction
Bluetooth Earphone Battery 300mAh is a high-density Li-Po cell with built-in PCM protection. It eliminates device swelling and provides reliable 10-15 hour playtime for neckband and wearable electronics.
|
Items |
Specifications |
|
Battery |
3.7v 300mah lipo battery |
|
Charge voltage |
4.2V |
|
Nominal voltage |
3.7V |
|
Nominal capacity |
280–300mAh (0.2C discharge) |
|
Charge current |
Standard: 0.5C / Fast: 1.0C |
|
Standard Charging method |
CC/CV (0.5C CC charge to 4.2V, then CV until current ≤0.05C) |
|
Charging time |
Standard: ~2.75h / Fast: ~2.0h |
|
Max.charge current |
1.0C |
|
Max.discharge current |
1.0C |
|
Discharge cut-off voltage |
2.75V(0.2C) |
|
Operating Temperature |
Charging: 0°C ~ 45°C / Discharging: 0°C ~ 45°C |
|
Storage Temperature |
-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 meter twice onto concrete ground. No fire, no leakage |
|
Cycle Life |
≥300times |
Key Features
Real 300mAh Stable Capacity
Each batch is tested under standard 0.2C discharge conditions to ensure accurate rated capacity and minimal deviation between cells.
Anti-Swelling Technology
Utilizes high-purity aluminum-plastic soft-pack packaging and specialized additives to prevent gas generation during high-temperature cycles.
Built-in Safety Matrix (PCM/PCB)
Integrated Seiko/Ricoh IC-based protection prevents overcharge, over-discharge, short-circuit, and thermal runaway.
Mechanical Reliability
Passed 1-meter dual-drop tests onto concrete and high-G vibration tests without leakage or internal structural failure.
Customization & OEM Services
Dimensional Tuning: Precise adjustment of Thickness, Width, and Length to fit your internal housing.
Connector Integration: Options for JST, Molex, Hirose connectors, or customized solder tabs/leads.
Extreme Environment Kits: Specialized cells for high-temperature stability or low-temperature (-40°C) functionality.
Shape Flexibility: Specialized shapes (curved, round, or triangular) available for unique industrial designs.
Applications
Wireless Audio: Premium neckband earphones, bone conduction headsets, and TWS charging cases.
Smart Wearables: Health trackers, smart rings, and industrial-grade smartwatches.
Medical IoT: Wearable pulse oximeters, hearing aids, and remote patient monitoring patches.
Industrial IoT: Low-power wireless Zigbee/LoRa sensors and smart security hardware.
Why Choose Us
Full Certification: Compliance with UL1642, CE, RoHS, UN38.3, and IEC62133 standards.
Quality Assurance: 100% OQC (Outgoing Quality Control) inspection before shipment.
Logistics Ready: Complete documentation (MSDS/UN38.3) for seamless sea or air freight.
FAQ
Q: What is the typical lead time for a custom 300mAh battery order?
A: Standard samples are available in 3-5 days. Bulk production for custom dimensions typically takes 15-25 days depending on the specification.
Q: Does the battery include a protection board?
A: Yes, all our batteries come standard with a Protection Circuit Module (PCM) that manages voltage and current to ensure safety.
Q: Can you provide the MSDS and UN38.3 reports for shipping?
A: Absolutely. We provide a full documentation package to ensure smooth international logistics and customs clearance.
Q: How do you ensure battery consistency?
A: Each battery is tested and graded by capacity, voltage, and internal resistance before shipment.
Q: Do you provide samples?
A: Yes, sample orders are available for testing and validation.
Hot Tags: bluetooth earphone battery 300mah, China bluetooth earphone battery 300mah manufacturers, suppliers, factory, 360mah Lithium Polymer Battery, Lithium Ion Polymer Battery 3 7 V 400mah, Lithium Ion Battery 110mah, Bluetooth Headset 500mah Battery, 300 Mah Bluetooth Battery, Bluetooth Earphone Battery 300mAh
