from chemistry to pack
The 2026 Mercedes-AMG GT 4 door Coupe battery pack details have been released, well, quite a few of them. We know the cell is 26mm in diameter and 105mm high. We also know the volumetric energy density is 732 Wh/litre. That then gives us: Cell nominal energy = 40.81 Wh We know that there are … Read more
Molicel, the Taiwan-based manufacturer known for producing some of the most trusted high-power lithium-ion cells, is expanding its 21700 product line. Long a favourite in motorsport, drones and aerospace, Molicel is now building a broader portfolio to serve a wider range of performance and energy demands. Their current roadmap outlines three distinct 21700 series: the … Read more
The Mercedes-AMG GT XX is a 1MW of motor power EV concept car that showcases the future. As per the EQXX it maybe shows us the Mercedes thinking on battery design. The high-voltage battery in the CONCEPT AMG GT XX is a completely new development. It benefits from all the experience from the AMG ONE … Read more
Jiang Jibing, Vice President of EVE Energy and Director of the Battery System Research Institute, was invited to attend the China Electric Vehicle 100 Forum (2025) and delivered a keynote speech on “OMNI All-Purpose Battery”. A look at the 4 reasons why EVE believe in large cylindrical cells [2]: Author: Woody Wu at power9tech.cn Standardization Perfectly Aligns … Read more
Cylindrical cells are commonly joined using several methods, each with distinct advantages and disadvantages depending on the application. Here are the most popular methods: Spot Welding Description: Spot welding uses a controlled electrical current to create localized heat, fusing a nickel strip to the positive and negative terminals of the cells. World Electr. Veh. J. 2018, 9(2), … Read more
The 2024 Porsche 911 T-Hybrid battery pack is interesting as this is a high power HEV pack using 21700 cylindrical cells. In the image you can see the battery pack is quite small and sits over the front axle (top right-hand side of the image). Using the Battery Calculations Workbook it is possible to enter … Read more
Metrics This post has been built based on the support and sponsorship from: Thermo Fisher Scientific, Eatron Technologies, About:Energy and Quarto Technical Services. Specifications It is interesting to note that in the EPA application the LDV 130 version has a usable pack energy of 76.3 kWh and our assumption is this based on the larger vehicle having slightly higher power … Read more
The Rivian R1 Gen 2 Battery has some big claims and appears to be a consolidation of the first generation of design (RIvian R1T Gen 1). The most obvious change is the enclosure profile as this is now a large high pressure casting. This accounts for a lot of their claims: This post has been … Read more
Recent industrial and academic studies have shown that aluminium cell housings can provide several benefits in terms of thermal management and gravimetric energy density in particular1,2,3. However, as Cell-To-Pack and Cell-To-Chassis approaches arise the battery cell and therefore, the battery cell housing, become part of the structure of the battery electric vehicle contributing with their … Read more
The anti-shunt tab design is there to enable a better resistance micro spot weld. The busbar for a cylindrical or prismatic cell has to be welded blind. Meaning you can only weld from the topside of the busbar as the cell itself is a sealed system. The anti-shunt tab design shown on the left welded … Read more