Since 2022, PENOX and the Austrian Battery Research Laboratory (ABR) have collaborated in investigating automotive battery technologies. Through this technical collaboration, the partners aim to understand the correlation between key battery performance factors and relate them to the general battery design and, ultimately, the electrode structure.

This study expands now to the battery technology of the Asian market. As previously done for the European market, we perform comparative analyses of AGM, EFB, and SLI battery technologies. Using both lab-based and real-world (field-returned) battery data, we examine key performance indicators under EN 50342 test regimes, focusing on 17.5% and 50% Depth of Discharge (DoD) cycles (all data is strictly anonymous).

In phase one of the study, the partners investigated European SLI, EFB, and AGM batteries produced by manufacturers covering over 85% of the European market share. The electrical testing involved over 300 batteries tested by standard norms. Furthermore, more than 150 field-returned vehicle batteries were tested in comparison.

Due to the complexity of the dataset, Python was used to analyse it efficiently. This process involved heat maps and pair plots, highlighting interesting correlations between design specifics and battery performance.

In this study’s second phase, the partners investigate whether the battery technology of leading Asian manufacturers follows similar realisation principles of function. The related work includes electrical tests by standard norms for about 250 batteries, and testing of up to 150 vehicle batteries returned from the field.

As AGM technology is a key strategy of the battery industry, the focus is on the similarity between EFB and AGM technology. Such understanding is a base for future material development of PENOX, allowing for a potential increase in the battery performance of automotive batteries.