CELLS

Cells are the smallest elements that store energy. They come in two packages, cylindrical ones and pouch-cell ones. The different types of cells have different characteristics depending on the power, energy, temperature and lifecycle requirements.  Cells as such are not made available unless to volume OEM customers. Kurt.energy will assemble the cells in modules with additional monitoring logic depending on the specific requirements of each application.

Cylindrical cells

Cylindrical cells are produced in 3 standard formats; 18500, 18650 and 23680. For detailed information consult the datasheet in the Documents section. Below the most import specifications are listed. 

Specifications for 18500 cells:

  • 3,2 V, 1,0 Ah, 2000 F nominal
  • Nominal energy: 3,2 Wh
  • Energy density: 100 Wh/kg, 236 Wh/l
  • Comparable to LFP cells but with supercapacitor benefits
  • Power density: 1500 W/kg, peak 200 ms 5000 W/kg
  • 10 C sustained capable
  • Operating temperature: -20 to + 70 °C
  • 20000 cycles
  • Certification package available
  • In production

Specifications for 18650 cells:

  • 2,5 V, 1,3 Ah, 3300 F nominal
  • Rated energy: 3,5 Wh
  • Energy density: 80 Wh/kg, 181 Wh/l
  • Comparable to LTO cells but with supercapacitor benefits
  • Power desnity: 1500 Wh/kg, peak 200 ms 4000 Wh/kg
  • 19,5 C sustained capable
  • Operating temperature: -40 to + 80 °C
  • 50000 cycles
  • Certification package available
  • In production

Specifications for 23680 cells:

  • 4,0 V, 4,0 Ah, 5000 F
  • Nominal energy: 13,8 Wh
  • Energy density: 230 Wh/kg, 488 Wh/l
  • Comparable to NMC cells but with supercapacitor benefits
  • Power density: 287 W/kg, peak 200 ms 800 W/kg
  • 1 – 1,25 C sustained capable (peak 1.5C) (with no cooling)
  • Operating temperature: -40 to + 80 °C
  • 10000 cycles
  • Volume production: 3Q 2020 (pre-orders)

Pouch cells

Based on the same technology, these pouch cells deliver a higher energy volume density. Still in the pre-production testing phase and not yet commercially available.

Preliminary specifications for  pouch cells – subject to change:

  • 4,0 V, 20,0 Ah, 25000 F
  • Nominal energy: 70,0 Wh
  • Energy density: 230 Wh/kg – 973 Wh/l
  • Comparable to NMC cells but with supercapacitor benefits
  • Power density: 250 W/kg, peak 200 ms 500 W/kg
  • 1C sustained capable
  • Operating temperature: -40 to + 80 °C
  • 10000 cycles
  • Production: 1Q 2021 (currently in prototype)