Sustainable power for the Flex-E

The Flex-E battery is the heart of the new ONOX electric tractor - developed by ANSMANN × ONOX.

Lithium-Ion Battery for Use in Onox Tractor Gen 2

Cell chemistry:
Cell configuration:
Cell-Type:
Nominal voltage:
Maximum charge voltage:
Minimum capacity:
Nominal energy:
Max continuous charge current:
Max continuous discharge current:
Identification:
Date of manufacture:
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Operating temperature (with heating):
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Weight:
LiFePO
16S2P
EVE 304Ah
51.2 V
58.4 V
608 Ah
31.1 kWh
608 A
608 A
Prototype battery
03.11.2025
Germany
-20 °C to 45 °C
0 °C to 45 °C
310 kg

Designed and manufactured by:

ANSMANN AG
Industriestr. 10
97959 Assamstadt
Germany
‍www.ansmann.de
‍battery-lab@ansmann.de

Manufactured for:

raumideen GmbH&Co.KG.
Hauptstraße 97
63937 Weillbach
Germany

Always ready for action - for the ONOX electric tractor

The Flex-E battery was specially developed for the ONOX Gen 2 tractor and provides constant energy for all applications - from the field to the farm.

High performance: 31.1 kWh of energy at 608 Ah
Safe: long-life LiFePO₄ cells with integrated battery management
Robust: Ready for use down to -20 °C thanks to heating function

Stable performance

The LFP cell technology guarantees a constant voltage during the entire discharge cycle.
This ensures that the performance of the electric tractor remains constant - even under high loads or at low temperatures.

With its robust design and integrated heating function, it remains reliable even at sub-zero temperatures. This makes it the ideal solution for farmers who rely on a sustainable and low-maintenance energy supply.

Powerful Li-Ion battery

The energy storage system for electric agricultural machinery

Easy to integrate

The modular design allows flexible adaptation to different tractor models and vehicles.

Economical & efficient

The long service life of the LFP cells ensures minimum maintenance costs and maximum operational reliability.

Made in Germany

Development and production at ANSMANN's headquarters guarantee the highest quality standards.

"The Flex-E battery is a milestone for the electrification of agricultural machinery - robust, safe and sustainable."
ANSMANN x ONOX - onox.de

Sustainability & recycling

ANSMANN stands for sustainable energy solutions with responsibility for the environment and resources.
You can find more information on the environmentally friendly disposal of batteries here:

Battery disposal at ANSMANN