Ambition: make Li-ion Battery Technology affordable and preferred

Battery Overview

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Battery efficiency depends on chemical composition and energy-to-weight ratio; in vessels, lighter weight reduces drag and energy use.
Unable to find suitable batteries at the right price, we developed our own using top-quality materials at the best cost.
Our batteries are nearly 30% lighter than average systems used in the marine industry.
Now, even the top three German car manufacturers are aligning with our approach.
LV High Energy

  • Efficient, scalable and perfectly fitted for the marine industry
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LV Solid State Tech

  • Safe, has a high cycle life, scalable and perfectly fitted for the marine industry
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HV High Energy

  • New Li-NMC cells provide more power, lighter weight, smaller size and 25% more range
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HV Solid State Tech

  • Cycle Life of more than 10000 easily achievable
  • Outstanding safety record
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ESS

  • Container 10 ft
  • Container 20 ft
  • Safe and Reliable power supply
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Custom Design Battery

If you don’t find the right dimensions of the batteries, EPT can make you a custom designed battery for your specific need. Ask us for a quote, we understand that the batteries should fit the vessel and not the other way around.

Origin of the Battery Materials

Lithium92% Australia, 8% China
NickelPapua New Guinea
CobaltPapua New Guinea
ManganeseChina
Electrical Characteristics12 LV /
High Energy		12 LV /
Solid State		24 LV /
High Energy		24 LV /
Solid State		48 LV /
High Energy		48 LV /
Solid State		HV /
High Energy		HV /
Solid State
Chemistry LFPSolid State TechNMCSolid State TechNMCSolid State TechNMCLithium-ion
Nominal Voltage12.8 VDC 150A12.8V25.9V 153A25.6 VDC48.1V 105A51.2V88.8V factor of51.2V factor of
Energy2.0kWh3.55 kWh3.96kWh7.15kWh5.05kWh14.3 kWh15.7kWh factor of14.336kWh factor of
Cycle Life @ 80% DoD≥3500
@0.2C/0.33C		10’000≥3000
@0.2C/0.33C		10’000≥3000
@0.2C/0.33C		10’0002600 @ 80% DoD10’000 @ 80% DoD
Voltage2 in series is possible to get 24V, unlimited parallel2 in series is possible to get 24V, unlimited parallel2 in series is possible to get 48V, unlimited parallel2 in series is possible to get 48V, unlimited parallel2 in series is possible to get 96V, unlimited parallel2 in series is possible to get 96V, unlimited parallel10 in series, 24 in parallel16 in series, 24 in parallel
Standard Charge12 LV /
High Energy		12 LV /
Solid State		24 LV /
High Energy		24 LV /
Solid State		48 LV /
High Energy		48 LV /
Solid State		HV /
High Energy		HV /
Solid State
Max Continues Charge60A220 A / 0.8C80A220 A / 0.8C75A220 A / 0.8C1C0.8C
Max Charge70A280 A / 1C100A280 A / 1C100A280 A / 1C1.5C for 15 min air-cooled / unlimited water-cooled1.2C for 15 min
Standard Discharge12 LV /
High Energy		12 LV /
Solid State		24 LV /
High Energy		24 LV /
Solid State		48 LV /
High Energy		48 LV /
Solid State		HV /
High Energy		HV /
Solid State
Max Continues Discharge120A330 A / 1.2C
15 min		140A330 A / 1.2C
15 min		140A330 A / 1.2C
15 min		1.6C1.2C
Peak Discharge200A<1S1000A<1S
500A 15 min		80A<1S, 600A short protection active1000A<1S
500A 15 min		80A<1S, 600A short protection active1000A<1S
500A 15 min		2 C for 15min, 3 C 10sec @ 25°C2 C for 10min, 3 C 10sec @ 25°C
Environmental12 LV /
High Energy		12 LV /
Solid State		24 LV /
High Energy		24 LV /
Solid State		48 LV /
High Energy		48 LV /
Solid State		HV /
High Energy		HV /
Solid State
Temp Range-10°C to 50°C-10°C to 60°C-10°C to 45°C-10°C to 60°C-10°C to 45°C-10°C to 60°C-10°C to 45°C-10°C to 50°C
Ideal Working Temperature5°C to 45°C5°C to 45°C5°C to 40°C5°C to 45°C5°C to 40°C5°C to 45°C5°C to 40°C5℃ to 45℃
Mechanical12 LV /
High Energy		12 LV /
Solid State		24 LV /
High Energy		24 LV /
Solid State		48 LV /
High Energy		48 LV /
Solid State		HV /
High Energy		HV /
Solid State
Battery CaseStainless SteelStainless SteelStainless SteelStainless SteelStainless SteelStainless SteelALU / SS top coverALU / SS top cover
Dimensions (LWH) mm300 x 420 x 115 mm500 x 220 x 250 mm314 * 423 * 126,5 mm810 x 220 x 250 mm314 * 423 * 126,5 mm810 x 425 x 250 mm1090 x 425 x 147 mm810 x 425 x 250 mm
System MountRacking SystemSelf-Stackable or RackRacking SystemSelf-Stackable or RackRacking SystemSelf-Stackable or RackSelf-Stackable or RackSelf-Stackable or Rack
Weight21 kg30 kg26 kg54 kg26 kg102 kg82kg 102kg
Communication modeCAN bus 250kCAN bus 250k
Victron compatible		CAN, RS485, BluetoothCAN bus 250k
Victron compatible		CAN, RS485, BluetoothCAN bus 250k
Victron compatible		CAN bus 250kCAN bus 250k
IP RatingIP 54IP 65IP 54IP 65IP 54IP 65IP 65, IP 67 on requestIP 65, IP 67 on request
CertificationsCE, UN38.3CE, UN38.3CE, UN38.3CE, UN38.3CE, UN38.3CE, UN38.3CE, UN 38.3, DNV-GL pendingCE, UN 38.3, DNV-GL pending
General Warranty2 Years, 3 years an option2 Years, 3 years an option2 Years, 3 years an option2 Years, 3 years an option2 Years, 3 years an option2 Years, 3 years an option2 Years, 3 years an option2 Years, 3 years an option
Cycle life Warranty5 Years5 Years5 Years5 Years5 Years5 Years5 Years5 Years

High Performance

High energy densities on less space.

Safety

For us safety is as important as efficiency and power density. 

Light weight

Reduced weight give less drag.

Warranty Batteries

Testing

  • Extensive Testing: Conducted rigorous evaluations to ensure durability and performance
  • Nature-Ready: Batteries are designed to withstand the forces of nature.
  • Reliable Performance: Proven resilience through comprehensive testing.

  • Cleaner Battery Packs: Together with our partners, we maximize the potential of Lithium-Ion Cell Technology to create cleaner, more efficient battery packs.
  • Innovative Design: Through better-designed packs and smarter solutions, we lower the total cost of ownership for our customers.
  • Aligned Efforts: Our R&D, Engineering, and Production Departments work in harmony to deliver top-quality, competitive battery modules and packs.
  • In-Depth Insight: We leverage full insight into Lithium-Ion Cell behavior to ensure optimal performance and reliability.
  • Optimized Cycle-Life: Continuous work on extending cycle life reduces service costs, increases operational reliability, and enhances life cycle assessments (LCA).
  • Collaborative Partnerships: EPT collaborates with ‘best in class’ partners for Battery Management Systems (BMS) and Cell design, contributing to component development at the design level.