14.8V 2900mAh 4S1P 18650 Battery Pack for Bluetooth Speaker
Power your premium Bluetooth speakers with intelligence and stability. The 14.8V 2900mAh 18650 Battery Pack is engineered to meet the critical demands of high-fidelity audio: high energy density for longer playtime, low-noise power output to prevent audio distortion, and precise fuel-gauging for accurate power level monitoring.
Avoid the compromises of standard batteries. Our integrated, compact power solution ensures consistent audio quality and extends battery life, making it the ideal choice for tight enclosures where performance cannot be sacrificed.
Key features：
- Integrated SMBUS to the battery
- Compact form factor (39 × 39 × 70.5 mm) for easy integration into portable speakers.
- Optimized for portable use and light weight.
| No. | Item | Specification | Note |
|---|---|---|---|
| 1 | Nominal Voltage | 14.8V | 3.7V/Cell |
| 2 | Nominal Capacity | 2900mAh | @0.2C |
| 3 | Minimum Capacity | 2800mAh | |
| 4 | Shipment Voltage | / | |
| 5 | Initial Internal Impedance | ≤130mΩ | AC 1KHZ |
| 6 | Standard Charge Voltage | 16.8V | 4.2V/Cell |
| 7 | Standard Charge Current | 1.45A | |
| 8 | Max. Charge Current | 2.9A | |
| 9 | Standard Discharge Current | 0.58A | |
| 10 | Max. Discharge Current | 2.9A | |
| 11 | Burst Discharge Current | 14.5A | ≤5ms |
| 12 | Discharge Cut-off Voltage | 12V | 3V/Cell |
| 13 | Cycle Life | ≥500cycles | Capacity retention ≥80% |
| 14 | Charge Temperature | 0°C~+45°C | Standard charge |
| 15 | Discharge Temperature | -20°C ~+60°C | Standard discharge |
| 16 | Storage Temperature | -20°C~45°C | ≤3 months |
| -20°C~25°C | ≤1 year | ||
| 17 | Weight | About180 | g |
| 18 | Special Request |
4S1P 14.8V 2900mAh 18650 Battery Pack FAQs
How does it ensure stable audio performance?
Yes. The integrated SMBUS to monitor the electrical voltage ,temperature and cylces .
Can it be customized for our design?
Yes. Its compact size allows for flexible integration. We can customize connectors, wiring, and protection circuits to fit your specific enclosure.
What is the typical cycle life and long-term reliability?
This battery pack is rated for over 500 cycles while maintaining more than 80% of its original capacity. This longevity is ensured by our high-quality cells and the integrated BMS, which provides critical protection (including over-charge, over-discharge, and short-circuit) to maximize the pack’s service life.
What connector types do you offer?
Standard options include JST-XH, Molex, and Anderson Powerpole. Custom connectors and cable lengths are available upon request.
Tailored Customization
Our design team can create custom battery designs for just about any device or machine.
Timely Delivery
Our efficient production and distribution process gets your product delivered in a timely manner.
Quality Guarantee
We stand by our products and guarantee you’ll be happy with your purchase.
