50.4V 50Ah 21700 Battery Packs for eFoil
Electric hydrofoils provide greater range because once airborne, they consume significantly less energy compared to jet-powered surfboards, which need to compensate for surface water resistance. CM Batteries offers a 50.4V 50Ah custom eFoil battery pack, engineered for exceptional performance and reliability in marine environments.
50.4V 50Ah 21700 eFoil Battery Pack Design
Product Highlights
- Lightweight Construction: Designed with high-energy-density cells to minimize weight while maximizing performance.
- Waterproof Design: IP68-rated enclosure ensures durability and protection against water and dust.
- Advanced BMS: Integrated smart Battery Management System with protections against overcharging, short circuits, and overheating.
- High Discharge Capability: Customized to meet the high-current demands of efoil motors.
50.4V 50Ah Lithium Ion Battery Packs for eFoil Parameter Specifications
| No. | Item | Specification | Note |
|---|---|---|---|
| 1 | Nominal Voltage | 50.4V | 3.6V/Cell |
| 2 | Nominal Capacity | 50Ah | @0.2C |
| 3 | Minimum Capacity | 49Ah | / |
| 4 | Initial Internal Impedance | ≤150mΩ | AC 1KHZ |
| 5 | Standard Charge Voltage | 58.8V | 4.2V/Cell |
| 6 | Standard Charge Current | 10A | @0.2C |
| 7 | Max. Charge Current | 25A | BMS Limit |
| 8 | Standard Discharge Current | 50A | @0.2C |
| 9 | Max. Discharge Current | 125A | / |
| 10 | Discharge Cut-off Voltage | 35V | 2.5V/Cell |
| 11 | Cycle Life | ≥400 cycles | Retention: ≥70% |
| 12 | Charge Temperature | 0°C~45°C | Standard Charge |
| 13 | Discharge Temperature | -20°C ~75°C | Standard Discharge |
| 14 | Storage Temperature | -20°C~ 45°C | ≤3 Months |
| -20°C ~ 25°C | ≤1 Year | ||
| 15 | Weight | About 17Kg | / |
| 16 | Special Request | Pre-discharge function | / |
The Development Timeline Schedule of Custom Battery Packs for eFoil
Preliminary Design
After receiving your initial questionnaire, we’ll create a custom design for your battery. Timeframe: 2 days.
3D Drawing
Next, we’ll provide you with a detailed CAD drawing of your custom battery. Timeframe: 2 days.
Approval of Specifications
We’ll share your battery pack specifications for your approval. Timeframe: 2 days.
Estimate
Next, we’ll create a pricing estimate for you to sign off on. Timeframe: 1 day.
Housing
If your battery pack requires custom housing, we’ll require some additional time to accommodate this request. Timeframe: 8-9 weeks.
BMS Development
We’ll craft a custom battery management system (BMS) for your unique battery to ensure safe and effective performance. Timeframe: 7-10 days for standard BMS, 25-30 days for Smart BMS.
Sample Creation
Next up, we’ll create a sample battery pack for you to sign off on before production. Timeframe: 5 days.
Sample Shipment
Once your sample is ready, we’ll ship it straight to you for approval. Timeframe: 4-7 days.
Certification
We can also assist with obtaining UL certification for your custom battery pack. Timeframe: 2-3 weeks.
- Specifications
50.4V 50Ah Lithium Ion Battery Packs for eFoil Parameter Specifications
No. Item Specification Note 1 Nominal Voltage 50.4V 3.6V/Cell 2 Nominal Capacity 50Ah @0.2C 3 Minimum Capacity 49Ah / 4 Initial Internal Impedance ≤150mΩ AC 1KHZ 5 Standard Charge Voltage 58.8V 4.2V/Cell 6 Standard Charge Current 10A @0.2C 7 Max. Charge Current 25A BMS Limit 8 Standard Discharge Current 50A @0.2C 9 Max. Discharge Current 125A / 10 Discharge Cut-off Voltage 35V 2.5V/Cell 11 Cycle Life ≥400 cycles Retention: ≥70% 12 Charge Temperature 0°C~45°C Standard Charge 13 Discharge Temperature -20°C ~75°C Standard Discharge 14 Storage Temperature -20°C~ 45°C ≤3 Months -20°C ~ 25°C ≤1 Year 15 Weight About 17Kg / 16 Special Request Pre-discharge function / - Development Timeline
The Development Timeline Schedule of Custom Battery Packs for eFoil
You can get in contact with our consultant to get the specific timeline for your custom battery pack solution.Preliminary Design
After receiving your initial questionnaire, we’ll create a custom design for your battery. Timeframe: 2 days.
3D Drawing
Next, we’ll provide you with a detailed CAD drawing of your custom battery. Timeframe: 2 days.
Approval of Specifications
We’ll share your battery pack specifications for your approval. Timeframe: 2 days.
Estimate
Next, we’ll create a pricing estimate for you to sign off on. Timeframe: 1 day.
Housing
If your battery pack requires custom housing, we’ll require some additional time to accommodate this request. Timeframe: 8-9 weeks.
BMS Development
We’ll craft a custom battery management system (BMS) for your unique battery to ensure safe and effective performance. Timeframe: 7-10 days for standard BMS, 25-30 days for Smart BMS.
Sample Creation
Next up, we’ll create a sample battery pack for you to sign off on before production. Timeframe: 5 days.
Sample Shipment
Once your sample is ready, we’ll ship it straight to you for approval. Timeframe: 4-7 days.
Certification
We can also assist with obtaining UL certification for your custom battery pack. Timeframe: 2-3 weeks.
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The Role of C-Rating in Lithium-Ion Battery Pack Design50.4V 50Ah 21700 Battery Pack for eFoil FAQ
Do your 50.4V 50Ah eFoil battery packs use Smart BMS?
Our battery packs can be designed with Smart BMS or hardware BMS.
Can the eFoil battery be customized?
Yes, we specialize in providing fully customized battery solutions for our partners:
Voltage and Capacity Adjustments: To meet the specific power and runtime needs of your equipment.
Size and Appearance Customization: To fit your device design and support your branding requirements.
BMS Feature Expansion: Options to integrate advanced protection features, monitoring modules, or remote communication.
Special Environmental Requirements: Designs for extreme temperatures, waterproofing, shock resistance, or corrosion resistance.
Do you offer OEM/ODM services?
Yes, we provide comprehensive OEM/ODM support for our partners:
Branding Customization: Your logo or branding on the battery casing.
Exclusive Design: Unique design and functionality tailored to your business.
After-Sales Integration: Seamless incorporation of our services into your brand’s customer support system.
What cooperation models do you offer?
We provide flexible cooperation models to suit different business requirements:
Project-Based Cooperation: Exclusive designs and production for specific projects or large orders.
Long-Term Agreements: Framework agreements to lock in pricing and production capacity for streamlined supply chain management.
Joint Development: Collaborative R&D for new products, sharing both innovation and market success.
How is battery safety ensured?
Battery safety is our top priority, and we ensure it through:
Advanced BMS System: Protects against overcharge, over-discharge, overcurrent, and short circuits while monitoring temperature and voltage in real-time.
Waterproof Protection: IP67-rated protection for complex water environments.
International Certifications: Compliance with UN 38.3, MSDS, CE, and other safety standards to ensure peace of mind for both you and your customers.
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.