safety and high cycle life at a premium

HV / Solid State Tech

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Using mostly solid instead of liquid electrolytes – enhancing safety, cycle life, and performance.
Can withstand overcharging, extreme heat, and punctures without harm.
With a hardware override switch, electronic control systems can be bypassed, ensuring reliable power access in any situation.
Extended cycle life of over 10,000 cycles – eco-friendly and cost-effective.
Solid State Battery
Solid state technology battery sketch
  • Cycle Life of more than 10´000 easily achievable
  • A greener, more economical battery with a lifespan 3-4 times longer than standard batteries, at no extra cost
  • Outstanding safety record
  • Can function without cooling in a broader temperature range, from 0 to 35°C
SOLID STATE TECHNOLOGY BATTERY CELLS
Electrical CharacteristicsSolid State Technology
Chemistry Lithium-ion
Nominal Voltage51.2V factor of
Energy14.336kWh factor of
Cycle Life10’000 @ 80% DoD
Voltage16 in series, 24 in parallel
Standard ChargeSolid State Technology
Max Continues Charge220 A / 0.8C
Max Charge280 A / 1C
Standard DischargeSolid State Technology
Max Continues Discharge280 A / 1C
Peak Discharge350A 15 min
EnvironmentalSolid State Technology
Temp Range-10°C to 60°C
Ideal Working Temperature5℃ to 45℃
MechanicalSolid State Technology
Battery CaseALU / SS top cover
Dimensions (LWH) mm810 x 425 x 250 mm
System MountSelf-Stackable or Rack
Weight102kg
Communication modeCAN bus 250k
IP RatingIP 65, IP 67 on request
CertificationsCE, UN 38.3, DNV-GL pending
General Warranty2 Years, 3 years an option
Cycle life Warranty5 Years
safety points
  • Our BMS is robust and proven, used in many industry and marine applications
  • We measure each single cell voltage and get alarms if one of the cells should get bad instant, even on a trend
  • 4/7 balancing as soon as the cells hit a certain target, this to avoid self-discharge and unneeded heat production
  • Each module has its own fuse
  • No gas ducting needed, DNV design option one
  • Pre-charge circuit for start-up

PERFORMANCE AND LIFETIME

Like all batteries, also EPTechnologies batteries age, by usage and by calendar aging. Calendar aging is around 1% per year if kept below 30 deg storage temp and if stored at 50 to 60% SOC.

With repeated charging and discharging (cyclical ageing).

DODCycle life depending on SOC usage
20%No Data
30%No Data
40%No Data
50%No Data
60%13’000
70%12’000
80%10’000
90% 9’000
100% 8’000

DOD: Depth of Discharge

SOC: State of Charge

These batteries have the potential to transform the way energy is stored and utilized in maritime transportation, contributing to a greener and more sustainable future. 

ESTIMATED LIFE ASSUMING THAT

  • Never below 10% SOC better 20%
  • Never over 95% SOC
  • Average temperature at 25 °C, never above 40 °C.
  • Normally max. 1 C discharge
  • Normally max 0.5C charge is 8000 cycles and remaining capacity is 75%

WARRANTY

EPTechnologies guarantees the remaining capacity according to the following diagram depending on the DoD per cycle

Warranty Batteries

STRING DATA

  • Each string can consist of 1 to 18 batteries in series for nominal, up to 844V if needed.
  • Each string has a string controller.
  • The string controllers have manual and remote disconnect switches and pre-charge

MULTI-STRING OR PARALLEL

  • Pack control Unit PCU has double communication lines.
  • Optional slave PCU control unit that can take over if the master fails is an option.
  • Up to 24 Strings in parallel per pack controller.
Batteries

What do others say about Solid State Tech Batteries?

Perspectives and explanations of the batteries.

Sailing Uma – a comparison
Cell Puncture Test at the METS
IBI News – overall info
PANBO – Test at the METS