Saft Evolion Batteries

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Evolion® provides highly efficient, safe and reliable backup power for all telecom sites and environments – no matter whether your equipment is inside or outside, on-grid or off-grid, in a hot or cold place, nearby site or remote. Evolion’s compact and lightweight design makes it possible to deliver the maximum energy backup from the limited space available within telecom cabinets while also ensuring optimum TCO.

Evolion® Li-ion battery: for compact and universal energy back up

Saft Evolion® Li-ion battery offers a unique combination of float charging capability and high cycling performance. Its key features include: high energy back up in a compact, weight-saving package; high efficiency; long calendar and cycle life – even when operating in extreme temperatures; zero maintenance requirements; an environmentally friendly design.

Evolion®’s high volumic energy means it only needs half the space required by a conventional VRLA battery.  For remote installations, the zero maintenance design coupled with intelligent remote supervision eliminates the need for routine site visits. The use of lightweight Li-ion technology also addresses the challenges of maximum floor loading requirements in Central Offices. Evolion® is four to ten times lighter than conventional batteries, depending on the applicationmaking it feasible to colocate the battery system with the active telecom equipment, even on raised floors.

Technical Specifications:


  • Nominal characteristics
    • Voltage window: 42 V to 56 V
    • Typical capacity at C8 at + 25°C: 77 Ah
    • Rated capacity at C8 at + 25°C: 74 Ah
  • Physical characteristics
    • Volumetric energy density: 171 Wh/l
    • Gravimetric energy density: 130 Wh/l
    • Dimensions (W x H x D): 216 mm x 260 mm x 404 mm
    • Weight: 30 kg
  • Operating conditions
    • Operates in temperatures from - 40°C to + 75°C
    • Long calendar life: 20 years at + 20°C /10 years at + 40°C
    • High cycle life: 4300 cycles 80% DOD, 8200 cycles 50% DOD
    • Round trip efficiency (Wh) > 95%


Additional Details


  • Lithium Ion


Downloads & Documentation

See below for documentation relating to this product line that is available to download. To download this documentation, please click on the desired document you’d like to download and fill out the required form information fields. You will be able to view and download the documents upon completion of the download form.

  • Saft Evolion Product Brochure
  • Evolion 2.1 IO Manual
  • Evolion 2.1 kw Datasheet
  • Evolion 3.9 IO Manual
  • Saft Evolion 3.9 kw Datasheet
  • Saft Evolion Toolbox Software