Sustainable power for the Flex-E

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

Powerful li-ion battery

The energy storage system for electric agricultural machinery

Easy to integrate

The modular design allows flexible adjustment to various tractor models and vehicles.

Economical & efficient

The long lifespan of LFP cells ensures minimal maintenance costs and maximum operational safety.

Made in Germany

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

Lithium-Ion Battery for Use in Onox Tractor Gen 2

Cell chemistry:
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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
Industriestrasse 10
97959 Assamstadt
Germany
www.ansmann.de
battery-lab@ansmann.de

Manufactured for:

Raumideen GmbH&Co.KG.
Main road 97
63937 Weillbach
germany

Always ready for use — for the ONOX electric tractor

The Flex-E battery was specially designed for the ONOX Gen 2 tractor develops and supplies constant energy for all areas of application — from field to farm.

High output: 31.1 kWh energy at 608 Ah
Safe: durable LiFePO4 cells with integrated battery management
Robust: Ready for use down to −20 °C thanks to heating function

Stable performance

LFP cell technology guarantees consistent voltage throughout the discharge cycle.
As a result, the performance of the electric tractor remains constant — even under heavy loads or at low temperatures.

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

“The Flex-E battery is a milestone in 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 about environmentally friendly disposal of batteries here:

Battery disposal at ANSMANN