Maximum Cell Discharge Capability

cell maximum current

Establishing the maximum cell discharge capability is difficult without understanding the design in detail. However, you can work towards establishing this limit with a number of measurements and calculations. The aim of this post is to describe that approach, the underlying physics, some of the measurements and calculations. First of all though we need to … Read more

How Can GC-MS Provide the Data Needed to Improve Lithium-ion Battery Performance?

Maintaining battery production quality and improving performance, lifetime, and safety requires application of a variety of analytical techniques. Confirming material composition and purity, ensuring the homogeneity of electrode slurries, detecting defects that can cause short circuits and certifying feedstock materials extracted from recycled batteries are all processes that depend on analytical testing. Investigating the mechanisms … Read more

TESLA CYBERTRUCK and Battery Pack

Tesla Cybertruck

Update: Now that Tesla Cybertruck has been launched and first delveries/bookings being confirmed. We can update the article and benchmarking based on the data available from the websites and various forums. We are now seeing them on the road and buzz is going around with various video reviews. Recent Q2 Earnings call gave us the … Read more

LG E66a

The LG E66a pouch cell is used in the Audi e-tron GT quattro and the 2019 Porsche Taycan that shares the same platform. Key features Designed to meet Dimensions Note that this cell has a single piece outer wrap and the tabs have been moved towards the bottom of the cell. These two features significantly … Read more

SES 50Ah Lithium Metal Cell

SES 50Ah cell and discharge capacity curves at different temperatures

The SES 50Ah lithium metal cell specification sheet was released in December 2022 [1]. Included in our benchmarking as this shows a cutting edge cell technology for 2023. However, at this point there are some questions as the data has some incomplete and missing parts. This will be described through the post where values are … Read more

Cell Expansion

As you charge a cell it expands, when you discharge a cell it contracts and as the cell ages over its lifetime we see a continuing cell expansion. Thus the cell expansion can be divided into: The reversible cell expansion comes from changes in graphite layer spacing associated with different graphite-lithium intercalation compounds induce reversible … Read more