25.2V 9000mAh Rechargeable 18650 Battery Pack for Diving Lights
This 25.2V 9000mAh rechargeable lithium-ion battery pack was precision-engineered for a leading diving light manufacturer, delivering high-capacity power in an optimized, compact form. Crafted with specialized production fixtures by the CMB engineering team, every unit guarantees consistent performance, superior safety, and a clean, professional finish. Designed to perform under pressure, the pack supports a continuous discharge current of 20A and a peak discharge of 25A, ensuring unwavering brightness and runtime during critical underwater operations.
As a trusted battery solutions partner for diving equipment, CMB integrates intelligent thermal management into even the most space-constrained designs—enhancing safety, prolonging battery life, and ensuring dependable operation in demanding environments. With dozens of successfully deployed battery models for diving lights, we have built a global reputation for durability, innovation, and performance you can rely on.
Key features：
- Cylinder Design: CMB engineered a 7S3P cylindrical battery pack that fits perfectly into the 40 × 480 mm housing with millimeter-level accuracy
- High-Performance Cells: Samsung INR18650-30Q cells, the pack delivers a stable 15A continuous discharge
- Flexible & Reliable Connection : Available with your choice of direct wiring or a low-resistance XT60 connector
- Custom BMS Integration: Every diving light battery pack is equipped with a tailored BMS, specifically designed to meet the unique safety and performance requirements of your application.
| No. | Item | Parameter | Remark |
|---|---|---|---|
| 1 | Nominal Voltage | 25.2V | 3.6V/cell |
| 2 | Nominal Capacity | 9000mAh | @0.2C |
| 3 | Minimum Capacity | 8850mA | / |
| 4 | Shipment Voltage | / | / |
| 5 | Initial Internal Impedance | ≤90mΩ | AC 1KHZ |
| 6 | Standard Charge Voltage | 29.4V | 4.2V/Cell |
| 7 | Standard Charge Current | 4.5A | |
| 8 | Max. Charge Current | 9A | |
| 9 | Standard Discharge Current | 9A | |
| 10 | Max. Discharge Current | 20A | / |
| 11 | Burst Discharge Current | 30A | ≤5s |
| 12 | Discharge Cut-off Voltage | 17.5V | 2.5V/cell |
| 13 | Cycle Life | ≥500 cycles | 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 | About 1.56 | kg |
| 18 | Special Request | / | / |
7S3P 25.2V 9000mAh 18650 Battery Pack FAQs
What makes your diving light batteries safer and more durable than standard off-the-shelf packs?
Safety is built into every layer: from high-quality, name-brand cells (like Samsung 30Q) and a fully protected BMS, to precision assembly that prevents moisture ingress and physical stress.
How do you handle custom electrical and mechanical requirements for integrated lighting systems?
We specialize in full integration. Whether you need a specific voltage, connector (wired or XT60), housing fit, or communication interface (e.g., SMBus), our engineering team works directly with you to design, prototype, and validate a battery solution.
How does this battery ensure reliable performance under extreme underwater pressure and temperature changes?
Our battery packs are engineered for the unique challenges of diving. Beyond standard BMS temperature protection, we focus on cell selection, structural integrity, and thermal design to maintain stable voltage and capacity, even in cold waters or during high-power bursts.
Can this pack support fast charging?
Yes. The pack supports standard charging at 0.5C and can be configured for up to 1C fast charging, depending on thermal limits and application requirements.
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.
