Electric race boats, powered by high-torque electric outboard motors, are transforming powerboat racing. This move to electric propulsion creates an extreme demand for batteries. Unlike standard batteries, racing requires instant, massive power for acceleration and speed, necessitating a high discharge rate battery (high C-rate). Grepow specializes in manufacturing these high-rate cells and building fully custom outboard battery packs to give racing teams the power and reliability they need to compete.
Electric racing boats are marvels of engineering, designed for one purpose: maximum speed and agility. Key features include:
●Advanced Hull Design: Often lightweight catamarans or hydroplanes designed to minimize drag and lift out of the water.
●High-Power Electric Propulsion: Utilize powerful, high-RPM electric outboard motors or inboard systems that provide instant torque.
●Lightweight Construction: Extensive use of carbon fiber and other composites to minimize weight, a critical factor in performance.
●Intense Power Demand: Systems are designed to draw huge amounts of current for rapid acceleration and to maintain high top speeds.
●Harsh Operating Environment: Components must withstand constant high-frequency vibrations, potential impacts, and exposure to water and humidity.
The battery is the heart of any electric race boat. Standard lithium-ion batteries are not sufficient; these applications require a specialized electric racing boat battery built for performance.
Extremely High Discharge Rate (C-Rate): This is the most critical requirement. The battery must be ableto safely discharge at very high multiples of its capacity (e.g., 30C, 35C, or higher) to power the motor at full throttle.
High Energy Density (Wh/kg): Maximizing power while minimizing weight is essential. A high energy density ensures the longest possible run time without compromising the boat's handling or buoyancy.
Low Internal Resistance (IR): Low IR is key to efficiency. It minimizes heat buildup during high-discharge cycles and prevents "voltage sag," ensuring the motor receives stable, high-voltage power for consistent performance.
Robust Thermal Management: The heat generated during a race is significant. The battery pack must be designed to manage and dissipate this heat effectively to maintain safety and cell longevity.
Durability and Safety: The pack must be mechanically robust to endure constant vibration and potential shocks. An appropriate IP rating for water and moisture resistance is also essential.
Fast Charging Capability: In a racing format with multiple heats, the ability to recharge quickly is a significant competitive advantage.
Grepow delivers race-winning power through two primary pathways: our advanced modular smart batteries and fully bespoke, ground-up custom outboard battery engineering.
Smart Battery with BMS
Tailored Battery Pack for Electric Powerboat Race
The Tattu 4.0 14S1P 30Ah Smart LiPo Marine Battery Pack is a high discharge rate battery module designed for performance-driven electric propulsion systems. With Smart BMS protection, CAN communication, and a lightweight high-rate LiPo chemistry, it provides the power density, safety, and responsiveness required in competitive marine racing.
Nominal Voltage: 53.2 V (14S1P)
Capacity: 30,000 mAh (30 Ah)
Battery Chemistry: High-rate LiPo
Conventional Maximum Sustained Current: 240 A
Max Continuous Discharge Current: 270 A
Peak Discharge Current: 350 A (≤ 3 s)
Communication Protocol: CAN
Net Weight: 11,400 g ± 300 g
Parallel Connection: Supported
Each Tattu 4.0 module supports parallel configuration, allowing multiple packs to be combined to achieve higher capacity and higher current output. This modular design makes it easy to build propulsion systems that deliver the sustained and peak power levels required for high-speed racing applications.
With its high C-rate performance and strong continuous current capability, the Tattu 4.0 is exceptionally well-suited for:
●45–70 kW electric race boats
●Electric conversions replacing 60–90 hp gasoline engines
●Competitive classes such as UIM F4-type racing boats
This makes the Tattu 4.0 an excellent foundation for building compact, powerful electric racing boat battery systems with rapid acceleration, stable power delivery, and professional-grade reliability.
Every electric racing boat has unique performance goals, hull shapes, and weight balances. When an off-the-shelf solution won't do, Grepow’s engineering team will design and build a completely custom electric racing boat battery to match your exact requirements.
We optimize every aspect of the LiPo marine battery pack—from cell
chemistry and internal stacking to enclosure shape and thermal management—to
give you the ultimate competitive advantage.
Provide your key specifications for a custom consultation:
●Motor power range (kW)
●Required voltage and capacity (V/Ah)
●Maximum continuous and peak current (Amps)
●Available installation space (L x W x H) and cooling requirements
●Target weight and desired run time
Contact our engineering team to start your custom battery project today via info@grepow.com
