High discharge 25.2V 49.5Ah 21700 Li ion Battery Pack
Our 25.2V 49.5Ah 21700 lithium-ion battery pack delivers robust and stable power even in high-pressure, humid, and salt-rich environments, making it ideal for powering thruster motors in demanding marine applications.
Equipped with multi-level protection and an advanced thermal management system, the battery effectively controls temperature rise during high-load operation, significantly reducing thermal risks and enhancing overall safety. Built to endure and perform, this battery pack empowers your subsea equipment with lasting energy, safety, and durability.
Key features：
- Configuration: 7S11P, made of Full Tab BAK INR2170-45D cells
- IP68 waterproof rating ensures reliable underwater operation.
- Integrated with BMS, continuous 150A discharge current and peak discharge current 200A.
- Aluminum alloy housing enhances corrosion and impact resistance.
| No. | Item | Parameter | Remark |
|---|---|---|---|
| 1 | Nominal Voltage | 25.2V | 3.6V/Cell |
| 2 | Nominal Capacity | 49.5Ah | @0.2C |
| 3 | Minimum Capacity | ≥48Ah | |
| 4 | Shipment Voltage | 21.7V~27.3V | |
| 5 | Initial Internal Impedance | ≤50mΩ | AC 1KHZ |
| 6 | Standard Charge Voltage | 29.4V | 4.2V/Cell |
| 7 | Standard Charge Current | 9.9A | 0.2C |
| 8 | Max. Charge Current | 49.5A | 1C |
| 9 | Standard Discharge Current | 9.9A | 0.2C |
| 10 | Max. Discharge Current | 150A | 3s |
| 11 | Burst Discharge Current | ≤200A | ≤20ms |
| 12 | Discharge Cut-off Voltage | 21.0V | 3V/Cell |
| 13 | Cycle Life | ≥500 cycles | Retention: ≥70% |
| 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 6.5 | kg |
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25.2V 49.5Ah 21700 battery pack FAQs
What is the maximum continuous discharge current?
The pack supports 150A continuous discharge and up to 200A peak, ensuring stable performance for high-power underwater scooters.
Is there an overheating risk during high-rate discharge?
No. We use full-tab BAK INR2170-45D cells with low internal resistance and high-performance BMS with thermal protection to minimize heat generation and ensure safety.
Can the housing withstand corrosion in seawater environments?
Yes. The aluminum alloy housing with anti-corrosion coating ensures durability in seawater applications.
Can the battery be customized for size and connector type?
Absolutely. We offer full customization of size, capacity, current connectors, waterproof structure, and BMS functions to fit your device perfectly.
Can you supply samples for testing before a bulk order?
Yes, we offer samples. Testing in your application is recommended to ensure compatibility before mass production.
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.
