Latest Posts

All of the latest posts listed in date order.

  • Dacia Spring 2022/23 – Extreme 65 and Essential 45.
    Top 10 European BEV 2022 model Dacia Spring battery pack benchmarking. Dacia spring comes in two models 45hp/65 hp with battery pack 26.8kWh.
  • 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 … Read more
  • Isolation Tests on Assembled Cells
    Isolation Tests on Assembled Cells come in a number of forms, but the intention is to check for: Although very rare, cell internal short circuits are a leading cause of battery thermal runaway. They are a major safety issue for any application of … Read more
  • Using an ECM to Model HiPot Tests
    Author: Siddharth Kurwa A DC high-potential test (HiPot) is used to detect manufacturing defects in the electrode stack/jelly roll. During the test, a high voltage (orders of magnitude higher than the cell operating voltage) is applied to the cell to screen out early-in-life … Read more
  • Aluminium Busbar Products
    for Cell Contacting Systems and Busbars Aluminium busbar products are used in manifold applications in batteries and battery systems due to their favourable structural, physical, and chemical properties. When it comes to cell contacting systems and busbars, electrical (and thermal) conductivity are decisive … Read more
  • SONY Lithium Ion Batteries- Worlds First commercialized LiB 1991.
    Sony and Asahi Group have the credit for making the worlds First Commercialized Lithium Ion Battery in 1991.
  • LG INR18650 MJ1
    LG INR18650 MJ1 is an 18650 cylindrical cell made by LG, NMC811 cathode and graphite anode with silicon. Key features Designed to meet Maximum current was based on 50% SoC nominal voltage, cutoff at 2.5V and DCIR of 60mΩ This post has been … Read more
  • Estimating Cell DCIR
    Often cell datasheets are limited in data, particularly when it comes to internal resistance. So how do we go about estimating cell DCIR? Although cell datasheets don’t explicitly give the DC internal resistance of the cell, they do often show the voltage versus … Read more
  • SES 50Ah Lithium Metal Cell
    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 … Read more
  • Peugeot e-208
    Benchmarking of peugeot e 208 battery pack. Two variants 50 kWh (2019) and 51 kWh (2020). 18 CATL Modules with Prismatic Cells.
  • 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 … Read more
  • VW Benchmarking ID3, ID4, ID5 and ID Buzz
    Volkswagen – VW Benchmarking battery pack of ID 3, 4, 5 and Buzz in detail by specifications and key pack metrics.
  • 2022 Nissan Ariya
    The 2022 Nissan Ariya has two battery pack sizes, 63kWh (66kWh total) and 87kWh (91kWh total). The vehicle is also available in 2WD and 4WD variants. The details around the battery specifications are very scarce and hence lots of gaps we need to … Read more
  • Increasing Usable SoC Window
    If you are in a battery design role there is always pressure on increasing usable SoC window. Nobody wants to pay for and carry around unused battery capacity. However, there are some really good reasons to restrict that window. High SoC and hence … Read more
  • Spirit of Innovation
    The configuration of three motors powered by three battery packs was selected so that the aircraft can still fly safely if there is a problem with a motor. Another reason was that a single engine was not available for the power required. [1] … Read more
  • Control-Oriented Reduced-Order Models
    Control-Oriented Reduced-Order Models for Lithium-Metal Batteries 22nd Advanced Automotive Battery Conference– San Diego, CA – December 5-8, 2022 Authors: Aloisio Kawakita de Souza, Wesley Hileman, M. Scott Trimboli, Gregory L. Plett Department of Electrical and Computer Engineering, University of Colorado Colorado Springs Background … Read more
  • Volkswagen MEB Battery Pack ID Family
    Volkswagen ID Family cars such ID 3, 4, 5, 7, Buzz are based on a Modular electric drive matrix (MEB) Chassis. This Chassis contains the battery pack built into the floor for optimal weight distribution. The MEB can be scaled for cars to … Read more
  • Empirical Wavelet Transform and Deep-Learning Neural Network
    Empirical Wavelet Transform and Deep-Learning Neural Network for State of Health Estimation of Lithium-ion Batteries Authors: Ma’d El-Dalahmeh, Maher Al-Greer, School of Computing Engineering and Digital Technologies, Teesside University, Middlesbrough, UKCentre of Smart Energy and Smart Grid Abstract This work presents a state … Read more
  • Physics-Based Model-Informed Smooth Particle Filter
    Physics-Based Model-informed Smooth Particle Filter based likelihood approximations for remaining useful life prediction of lithium-ion batteries Authors: Mo’ath El-Dalahmeh, Maher Al-Greer, Ma’d El-Dalahmeh, and Imran BashirSchool of Computing Engineering and Digital Technologies, Teesside University, Middlesbrough, UKCentre of Smart Energy and Smart Grid What … Read more
  • Cold Climate EV Range
    Cold climate EV range is determined by a number of factors. First of all though, let’s look at the range results as conducted by in their winter range tests. An impressive test with 29 different electric vehicles. Read the full description of … Read more
  • Cell Capacity and Pack Size
    Obviously Cell Capacity and Pack Size are linked. The total energy content in a battery pack in it’s simplest terms is: Energy (Wh) = S x P x Ah x Vnom  Hence the simple diagram showing cells connected together in series and parallel. … Read more
  • Sodium-Ion Cell Characteristics
    Sodium-ion cells are in the very early stages of mass production, with the first commercial systems being available for purchase in 2023. Some typical characteristics of sodium-ion cells include: The table below provides an overview of some of the companies working around Sodium-ion … Read more
  • Sodium-Ion Battery Materials
    Many of the battery components in both sodium-ion and lithium-ion batteries are similar due to the similarities of the two technologies. This post provides a high-level overview of sodium-ion battery materials. Cathode materials Anode materials Metallic anodes are also being researched for Na-ion … Read more
  • Things about Solid State Packaging that you are often not told
    This is a follow-up to “10 things about SSBs that you are often not told”, January 10, 2023 Author Dr. Simon Madgwick of Nuvvon Inc. In “10 things about SSBs that you are often not told”, number 9 was a brief explanation of Packaging, … Read more
  • Cell Specifications
    What do we need to see on a cell specifications sheet? Of course we need high level data, but I think we need quite a bit more. This is my starter, but I would like to develop this list into a more concise … Read more
  • Pouch Cell Design and Edge Cooling
    Looking at the pouch cell design and edge cooling evolution allows us to appreciated the importance of battery cell electro-thermal behaviour. Fundamentally pouch cells are made from multiple layers of active material all applied to copper and aluminium electrodes that are sandwiched and … Read more
  • Rivian R1T Battery Pack Benchmarking
    In this Article you will the details about the Rivian R1T Battery pack and Module Construction, Standard Specification, Key Pack Metrics.
  • Optimal Busbar Joint Overlap
    What is the optimal busbar joint overlap? It should be noted that the experimentally derived optimum is for plain busbars and does not include a hole for the fixture. Braunovic [3] shows the impact on resistance of the joint overlap. The resistance ratio … Read more
  • Electrical Contact Resistance
    The Electrical Contact Resistance at a metal to metal contact is primarily governed by: The surface structure can be further described by the surface flatness, surface oxidation and water adsorption. These joints in a battery pack will either be welded or bolted. Initially … Read more
  • Benefits of Aluminium Cell Housings for Cylindrical Lithium-ion Batteries
    A 4680 cell concept The battery industry is targeting larger cell formats, which enable simplified module design and cell-to-pack or even cell-to-chassis solutions. In this regard, hard case battery cells and in particular cylindrical cells will play an important role in enabling the … Read more