43.2V 40Ah 21700 Battery Pack for Electric Surfboard

43.2V 40Ah 21700 Electric Surfboard Battery Packs

CMB proudly designs and manufactures battery packs specially crafted and equipped for electric surfboards and eFoils. Learn more about our electric surfboard battery offerings below, and reach out to a CMB team member today to get started with your custom battery pack design.

43.2V 40Ah 21700 Electric Surfboard Battery Pack Design

Product Highlights

  • Upgraded Technology: The 43.2V 40Ah 21700 battery pack for electric surfboards is the newest upgrade to the 43.2V 35Ah 18650 eFoil battery pack. Manufactured by CMB, it uses cutting edge Smart BMS and abstract heat technology to ensure battery reliability.
  • Enhanced Capacity: The 21700 battery cells used in this pack offer a substantial increase in capacity, now providing an impressive 40Ah. This increased capacity translates to longer surf sessions, allowing enthusiasts to enjoy extended time on the water without worrying about power limitations.
  • Optimized Design: CMB’s custom design expertise shines through in the 43.2V 40Ah 21700 battery pack. With a focus on waterproof solutions, our engineering team has created a battery pack tailored specifically for the demanding conditions of water sports. This ensures reliability and peace of mind even in challenging environments.
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43.2V 40Ah 21700 Lithium Ion Battery for Electric Surfboard Parameter Specifications

No. Item Specification Note
1 Nominal Voltage 43.2V 3.6V/Cell
2 Nominal Capacity 40Ah @0.2C
3 Minimum Capacity 39Ah /
4 Initial Internal Impedance ≤250mΩ AC 1KHZ
5 Standard Charge Voltage 50.4V 4.2V/Cell
6 Standard Charge Current 8A @0.2C
7 Max. Charge Current 15A BMS Limit
8 Standard Discharge Current 8A @0.2C
9 Max. Discharge Current 80A /
10 Discharge Cut-off Voltage 32.4V 2.7V/Cell
11 Cycle Life ≥500 cycles Retention: ≥80%
12 Charge Temperature 0°C~45°C Standard Charge
13 Discharge Temperature -20°C ~70°C Standard Discharge
14 Storage Temperature -20°C~ 45°C ≤3 Months
0°C ~ 25°C ≤1 Year
15 Weight About 12.4Kg /
16 Special Request Waterproof IP68 /

The Development Timeline Schedule of Custom Battery Pack 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.

Specifications

43.2V 40Ah 21700 Lithium Ion Battery for Electric Surfboard Parameter Specifications

No. Item Specification Note
1 Nominal Voltage 43.2V 3.6V/Cell
2 Nominal Capacity 40Ah @0.2C
3 Minimum Capacity 39Ah /
4 Initial Internal Impedance ≤250mΩ AC 1KHZ
5 Standard Charge Voltage 50.4V 4.2V/Cell
6 Standard Charge Current 8A @0.2C
7 Max. Charge Current 15A BMS Limit
8 Standard Discharge Current 8A @0.2C
9 Max. Discharge Current 80A /
10 Discharge Cut-off Voltage 32.4V 2.7V/Cell
11 Cycle Life ≥500 cycles Retention: ≥80%
12 Charge Temperature 0°C~45°C Standard Charge
13 Discharge Temperature -20°C ~70°C Standard Discharge
14 Storage Temperature -20°C~ 45°C ≤3 Months
0°C ~ 25°C ≤1 Year
15 Weight About 12.4Kg /
16 Special Request Waterproof IP68 /
Development Timeline

The Development Timeline Schedule of Custom Battery Pack 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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How We’ll Work Together
Discover
We’ll ask questions via our inquiry form about your specific battery needs. Please provide us with the voltage, capacity, specific battery casing, and any special requirements at this time.
Design
We’ll design the ideal battery pack for your device.
Contract
We’ll send you a contract once you sign off on your unique battery pack design.
Estimate
We’ll provide you with an estimate according to the volume you require.
Prototype
We’ll produce and deliver a sample product for you to test and approve.
Production and Delivery
We’ll manufacture, QC check, and deliver your custom battery order.

43.2V 40Ah 21700 Electric Surfboard Battery Pack Applications

43.2V 40Ah 21700 Battery Pack for Electric Surfboard FAQ

Do your 43.2V 40Ah 21700 eFoil battery packs use Smart BMS?

Our battery packs can be designed with Smart BMS or hardware BMS.

What kind of li-ion charger is compatible with 43.2V 40Ah 21700 eFoil battery packs?

For these battery packs, use the dedicated 50.4V 10A chargers provided by the manufacturer.

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.