18650 3.7V 2600mAh Lithium Battery for Bluetooth Speaker

Product Overview

This 18650 3.7V 2600mAh cylindrical lithium-ion cell is specially optimized for portable Bluetooth speakers. With stable voltage output, high energy density and excellent continuous discharge performance, it perfectly matches the power demand of mini outdoor speakers, desktop Bluetooth audio and portable sound equipment.

Adopting Grade A original lithium-ion cells, strict internal resistance sorting and full aging testing, this battery maintains stable power output during long-time music playback. It effectively suppresses lithium dendrite growth, avoids low-voltage shutdown, sound distortion and battery swelling problems, greatly improving product stability and after-sales rate for speaker manufacturers.

Core Specifications

• Model: 18650

• Nominal Voltage: 3.7V

• Capacity: 2600mAh

• Battery Type: Cylindrical Lithium-ion Battery

• Application: Bluetooth Speaker, Portable Audio, Mini Sound Box

• Certification: UN38.3, MSDS, RoHS

Product Advantages

1. Stable Discharge, No Sound Distortion

The 2600mAh high-capacity cell provides steady continuous current. It effectively prevents sudden voltage drop, audio stutter or distortion when the speaker plays high-volume bass music.

2. Long Playback Time

High energy density design greatly extends Bluetooth speaker working time, improves customer experience and product competitiveness for audio brands.

3. Excellent Safety & Low Failure Rate

Optimized internal structure and anti-dendrite technology reduce battery swelling, short circuit and thermal runaway risks. Suitable for long-term cycle use and mass production assembly.

4. Low Self-Discharge

Ultra-low self-discharge performance ensures speakers keep power during long shelf time, no need frequent charging for inventory products.

5. Factory Direct B2B Support

Support batch wholesale, PCB welding assembly, custom battery pack and wire harness customization. Flexible MOQ for sample testing and large bulk orders.

Application Scenarios

• Portable outdoor Bluetooth speakers

• Mini desktop wireless audio

• Home portable sound boxes

• Camping waterproof Bluetooth speakers

• All 3.7V small portable audio devices

B2B Factory Service

✅ Grade A cell strict sorting & full aging test
✅ Stable batch quality for mass production
✅ Custom pack, wire, connector and label service
✅ Complete export certification for global shipping
✅ Professional technical support for audio power solution