The 541112 3.7V lithium ion polymer battery pack for bluetooth headphone is specially developed for compact electronic devices requiring lightweight design, stable power output and flexible installation.
Compared with traditional cylindrical batteries, lithium polymer batteries feature a thinner structure, higher design flexibility and better adaptability for modern smart devices.
Yideng applies advanced electrode technology and automated manufacturing processes to ensure consistent battery performance for high-volume production.
This 541112 battery model is widely used in Bluetooth headphones, wireless earbuds, wearable devices and other portable electronics where size and reliability are critical.
| Item | Specification |
| Model | 541112 |
| Material | Li-ion Polymer Battery |
| Normal Capacity (0.2C) | 45mAh |
| Minimum Capacity (0.2C) | 45mAh |
| Energy | 0.171Wh |
| Normal Voltage | 3.8V |
| Delivery Voltage | 3.85V ~ 4.05V |
| Standard Charge Method | Charge at maximum current. When the battery or pack terminal voltage reaches the charging limit voltage, charge at constant voltage until the charging current is less than or equal to 0.02 C, then stop charging. |
| Discharge Program | The battery or the battery pack carries on the constant current discharge with the maximum discharge current to the discharge termination voltage. |
| Max Charging Current | 1C CC/CV → 0.02C cutoff |
| Max Discharging Current | 1C CC/CV → 3.0V cutoff |
| Over-Discharging Current | 2.3V |
| Operation Temperature Range |
Charging: 0°C ~ 50°C Discharging: -20°C ~ 60°C |
| Allowable Maximum Surface Temperature |
Charging: Tmax ≤ 50°C Discharging: Tmax ≤ 60°C |
| Storage T/H Range (time) |
-20°C ~ 60°C (Less than 1 month) -20°C ~ 45°C (Less than 3 months) -20°C ~ 25°C (Less than 1 year) |
| Cycle Life |
≥ 300 times (Thickness expansion rate ≤ 10%) ≥ 500 times (Thickness expansion rate ≤ 12%) |
With a maximum dimension of only 5.3 × 10.5 × 11.8mm, the 541112 3.7V lithium ion polymer battery pack for bluetooth headphone is designed for miniature electronic products.
Its slim and lightweight structure helps engineers maximize internal space while maintaining stable battery performance.
The battery provides:
- Nominal voltage: 3.8V
- Capacity: 45mAh
- Low self-discharge performance
- Stable discharge characteristics
It supports reliable operation for Bluetooth headphones and portable consumer electronics.
Yideng lithium polymer batteries are developed with safety and durability in mind.
Features include:
- High energy density
- Long cycle performance
- Low leakage rate
- Reduced heat generation
- Custom protection circuit options
Different electronic products require different battery solutions.
Yideng provides customization services including:
- Customized battery dimensions
- Customized wires and connectors
- PCM protection design
- Capacity adjustment
- Shape modification
From prototype samples to mass production, Yideng supports customers throughout the battery development process.
Customers provide battery requirements including:
- Device application
- Size limitation
- Capacity requirement
- Connector specifications
Yideng engineers evaluate the design and provide samples for testing.
Battery performance is tested according to customer requirements.
After approval, automated production lines ensure stable quality and delivery.
The 541112 battery provides compact and stable power for:
- Bluetooth headphones
- Wireless earbuds
- Mini headsets
Suitable for:
- Smart wearable devices
- Smart rings
- Portable electronic products
Applications include:
- Digital devices
- Portable equipment
- Smart home products
- Mini electronic systems
Yideng provides export-standard packaging solutions.
Shipping methods:
- DHL / FedEx / UPS / TNT express
- Air shipment
- Sea shipment
Typical delivery time:
4 – 25 working days depending on order quantity and customization requirements.
Unlike battery trading companies, Yideng focuses on lithium battery cell R&D and manufacturing.
Our advantages include:
- 1 million cells daily production capacity
- 85% automated production lines
- 150 R&D engineers
- 68 battery-related patents
- Intelligent MES production management system
- Professional quality inspection laboratories
Yideng supports both standard battery models and customized lithium polymer battery projects for global customers.
A1: The 541112 battery has a nominal capacity of 45mAh with a nominal voltage of 3.8V.
A2: Yes. Yideng provides OEM/ODM customization including connector type, wire length, PCM protection and battery dimensions.
A3: Yes. The compact size and stable discharge performance make it suitable for Bluetooth headphones, wireless earbuds and other miniature consumer electronics.
A4: Yes. Yideng supports sample production and testing before bulk manufacturing.
A5: The battery can meet certifications including UL1642, IEC62133, CE, RoHS, UN38.3 and other international standards.
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Xin'an Village industrial Park, Yonglejiang Town, AnrenCounty, Chenzhou City, Hunan Province, China
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