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High-energy battery solutions for heavy vehicles


Scalable modular system

energy density

Forsee Power’s range of ZEN batteries for heavy transport incorporates the best very high energy NMC cells on the market capable of providing high performance for heavy vehicles whether they are all electric, diesel hybrids or hydrogen hybrids, allowing a day of autonomous operations.

ZEN solutions are scalable and modular and can be integrated on the roof, rear or even in the floor, thanks to the SLIM format which has recently enriched the range.


35 kWh high-energy battery pack for overnight charging option.


42 kWh high-energy battery pack for overnight charging.


Extra-slim modular & scalable battery offer for easy integration in all spaces


Ultra-thin 8 kWh module with very high modularity for off-highway and light vehicles

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Extra modular battery offer covering a wide range of energy: from 74 kWh to 84 kWh

e.City Gold from CaetanosBus run with ZEN 35 technology

Since 2020, ZEN 35 is running in London equipping 34 buses of the Portuguse manufacturer CaetanoBus.

Forsee Power engineering teams have integrated on e.City Gold vehicles’ roof 350 kWh of  energy allowing them to reach 230 km of autonomy without charging during operations. The bus is able to fully charge the high-energy ZEN batteries during the night at the depot.

Wrightbus will integrate ZEN SLIM batteries

As part of its exclusive supplier partnership with Wrightbus, Forsee Power will supply Wrightbus with the new ZEN SLIM batteries, whose extra flat format allows easy integration into the chassis of vehicles (standard or double-decker buses).

Each bus will be equipped with three battery systems up to 340 kWh and an extension including a fourth system will also be possible, providing exceptional capacity of 432 kWh and a battery range of more than 350 kilometers.

Heuliez Bus integrates ZEN technologies for RATP

As part of the biggest European electric bus tender lead by RATP in 2018, Forsee Power equips more than 260 bus from the French manufacturer, Heuliez Bus, with ZEN 35 battery systems.

In July 2021 , we have won with our partner IVECO the largest batch in the call for tenders launched by RATP as part of its Bus2025 plan.  Forsee Power will equip 180 standard  GX 337 ELEC buses of HEULIEZ with its brand-new ZEN 42, a high-energy battery system that provides 20% more energy density than the ZEN 35, in the same format.

This call for tenders, funded by Île-de-France Mobilités, are part of the implementation of the Bus2025 plan aimed at making the Paris bus fleet and its region more environment friendly.

Certifications & safety

All our batteries are developed to meet the highest safety and
certification requirements throughout the whole conception and
manufacturing process.

  • R-100-2
  • R10.5
    Electromagnetic compatibility
  • UN38.3

Contact us

For the most personalized support to your project, get in touch directly.