Delivering 3.6V / 2600mAh (9.36Wh), the ASOL 18650 3.6V 2600mAh Lithium-ion Battery Cell for Bluetooth Speakers is a lithium battery in a 1S1P configuration measuring 67 × 22.5 × 19.2 mm and weighing 50g. It is engineered to power Bluetooth Speaker and similar devices, with a stable discharge curve and dependable cycle life. Built with a built-in BMS for overcharge, over-discharge, and short-circuit protection, it is fully customizable for OEM and ODM programmes.
Product Overview
When it comes to powering Bluetooth speakers and portable audio devices, compact size and reliable performance are essential. A bulky or unreliable battery compromises portability and user experience. The ASOL 1S1P 3.6V 2600mAh lithium battery is engineered to deliver stable, long-lasting power in an ultra-compact form factor — so your Bluetooth speaker delivers consistent sound quality from the first song to the last.
Whether you’re a Bluetooth speaker manufacturer sourcing batteries for production, an audio equipment brand looking for a reliable power solution, or a distributor stocking replacement batteries, ASOL delivers the quality you can count on.
Product Specifications
| Specification | Details |
|---|---|
| Brand | ASOL |
| Model | 18650-2600mAh (1S1P) |
| Nominal Voltage | 3.6V |
| Capacity | 2600mAh |
| Configuration | 1S1P (Single Cell) |
| Dimensions | 67 × 22.5 × 19.2 mm |
| Discharge Current | 2.5A |
| Weight | 50g |
| Connector | ZH-3P (Plug-and-Play) |
| Protection | Over-Charge / Over-Discharge / Over-Current / Short-Circuit / Over-Temperature |
| Cycle Life | ≥500 cycles |
| Charging Temp | 0°C ~ 45°C |
| Discharging Temp | -20°C ~ 60°C |
| Certifications | CE · RoHS · UN38.3 · MSDS |
Key Features
Compact power, built to last
67 × 22.5 × 19.2 mm and just 50g for tight builds.
Consistent output for steady audio and Bluetooth across the cycle.
Over-charge, discharge, current, short-circuit & temperature protection built in.
ZH-3P Plug-and-Play Connector
No soldering required. The ZH-3P connector enables quick, tool-free battery connection and simplifies assembly for manufacturers. Reduces production time and service costs.
Premium 18650 Cell Quality
Built with 18650-2600mAh lithium-ion cells — the industry standard for reliable, rechargeable power. Proven technology with excellent cycle life and safety record.
Applications
Where the 1S1P is used
Primary 3.6V power for portable speakers & amplifiers.
Wireless soundbars, portable PA systems & outdoor speakers.
Smart speakers & voice assistants needing standby power.
Mini, travel & compact speakers in small form factors.
Camping, hiking & water-resistant adventure audio devices.
Earbud charging cases, mini speakers & voice recorders.
Who Is This Battery For?
| Customer Type | How ASOL Helps |
|---|---|
| Bluetooth Speaker Manufacturers | Reliable OEM battery supply with consistent quality for mass production. Factory-tested every unit. |
| Audio Equipment Brands | A dependable power solution that enhances your product’s portability and user satisfaction. |
| Distributors & Wholesalers | High-margin, fast-moving product with strong repeat purchase rates in the growing audio market. |
| & Replacement Market | Premium replacement battery for popular Bluetooth speaker models. Easy plug-and-play installation. |
Why Quality Matters: The ASOL Difference
Not all 18650 batteries are created equal. Here’s what sets ASOL apart:
- Factory-Tested Every Unit — Every battery undergoes individual capacity, voltage, and internal resistance testing before shipping
- Consistent Cell Quality — Premium-grade cells selected for stable performance and long cycle life
- Professional PCM Integration — Built-in Protection Circuit Module ensures safe charging and discharging
- UN38.3 Certified — Safety tested and certified for international shipping
How 2600mAh Translates to Real-World Usage
| Usage Scenario | Estimated Playtime per Full Charge |
|---|---|
| Low volume (background music) | ~15-0 hours |
| Medium volume (typical listening) | ~10-5 hours |
| High volume (party mode) | ~6 hours |
| Standby mode | ~30+ days |
Estimates based on typical Bluetooth speaker power draw of 0.5-1W. Actual results may vary by speaker model and volume level.
Cycle Life Explained
A “cycle” equals one full discharge followed by a full recharge. The ASOL 1S1P maintains ≥80% capacity after 500 cycles under standard test conditions (0.2C discharge, 0.5C charge at 25°C).
Partial charges do not consume full cycles — so topping up after each use actually extends the battery’s effective lifespan. With typical usage (1-3 hours daily), this translates to well over 2 years of reliable service.
Bulk Orders & OEM Services
Looking for a long-term battery supplier for your Bluetooth speaker production line? ASOL offers:
- Wholesale Pricing — Competitive rates starting at 100+ units
- Branding — Logo printing and branded packaging available
- OEM/ODM Support — Tailored specifications for your unique product requirements
- Global Shipping — Reliable logistics to manufacturers worldwide
Trusted by Manufacturers Worldwide
ASOL batteries power audio and portable electronics sold across North America, Europe, Southeast Asia, and the Middle East. Our commitment to consistent quality and reliable supply chains has made us a preferred partner for leading portable electronics brands.
“The ASOL 1S1P batteries have been our go-to power solution for our Bluetooth speaker line. The compact size fits our slim designs perfectly, and the 500-cycle life means fewer returns and happier customers.” — Product Manager, Audio Equipment Manufacturer
Get Started Today
Ready to power your Bluetooth speaker line with the ASOL 1S1P 3.6V lithium battery? We’re here to help.
Sample Evaluation
Test battery quality and compatibility before committing to a bulk order.
Talk to Our Team
Our battery specialists will answer your technical questions and help you select the right pack for your application.
Request a B2B Quote
Get competitive pricing for your order volume — typically within 24 hours.
Frequently Asked Questions
Is this battery compatible with my Bluetooth speaker model?
The ASOL 1S1P 3.6V uses a compact form factor (67×22.5×19.2mm) with ZH-3P connector. If your Bluetooth speaker has a battery compartment of this size and uses a 3-pin connector, it is likely compatible. Please verify dimensions and connector type before ordering.
How many times can I recharge this battery?
This battery is rated for 500+ full charge cycles while retaining at least 80% of its original capacity. With typical usage (1-3 hours daily), this translates to over 2 years of reliable service.
Is this battery safe to use in consumer electronics?
Yes. The ASOL 1S1P 3.6V is certified with UN38.3, MSDS, CE, RoHS — meeting international safety standards for transport and environmental compliance. It features built-in 5-layer protection.
How are evaluation requirements handled?
Sample evaluation may be available for selected cylindrical and lithium polymer battery projects, subject to specification review and product availability. Sample freight is paid by the customer. Include any evaluation requirements in Additional Requirements.
Do you offer international shipping?
Yes. We ship globally via trusted logistics partners including DHL, FedEx, and sea freight. Shipping costs and lead times vary by destination.
What is the difference between 1S1P and other configurations?
1S1P means a single cell (1S) with 1 parallel group (1P). This configuration delivers 3.6V nominal voltage — ideal for compact Bluetooth speakers and low-power audio devices. It's the most compact and cost-effective solution for single-cell applications.
Contact Us
| info@asolbattery.com | |
| +86 15779858703 | |
| Website | www.asolbattery.com |
| Response Time | 24h on working days |
| Business Hours | Mon — Fri, 9:00 AM — 6:00 PM (GMT+8) |
| Urgent Orders | Call directly for priority support |
Need a different size or capacity? Explore ASOL’s full cylindrical battery range →
