from chemistry to pack
How to Size the Battery for Your Forklift Fleet Author: Max Khabur, Marketing Director ENEROC USA A practical guide to moving a warehouse fleet from propane to electric trucks: the benefits of switching and the four variables that determine what size battery the job requires. Why switch Maintenance. An internal combustion engine needs oil changes, filters, spark … Read more
ATI’s 2026 Target Matrix vs the 2021 NASA Baseline Back in 2022 we covered NASA’s targets for electrified aircraft propulsion, which were deliberately broad: a single system level specific energy figure of 400 Wh/kg, a general expectation of “1000’s of cycles”, and a note that power demand would spike hard during takeoff and landing. That … Read more
Can we find a battery pack from the Battery Pack Database, using a limited dataset of 642 packs. Something that might get you an idea as to what you should be looking at? Note: if you just want to search based on useable energy just delete the values in all of the other search boxes. … Read more
With so much data now available in the Battery Pack Database it is interesting to look at Cell to Pack Mass Ratio by Chemistry and Format. Note that for this analysis we have excluded all of the BESS packs as they tend to not be as mass sensitive as mobile applications. The fixed lines showing … Read more
Most cell selection still begins with datasheets, because they are the only information engineers can easily access early on. That is understandable, but it is also why teams spend months testing “promising” cells that later fail in a real pack. The root issue is simple: a cell is not a battery pack. Effective selection requires … Read more
In the battery application world everyone is always looking for power vs energy density. Wanting the maximum of both. However, as we know from a comparison of power vs energy cell design it is nearly impossible to have both. In simple terms the energy cell has thicker layers of active material, thinner current collectors and … Read more
For most simple peak power calculations we will be interested in the Direct Current Internal Resistance (DCIR) value for a new cell at 50% SOC (25°C, 10s), Open Circuit Voltage (OCV) and minimum voltage. Note: this is just an estimation and this needs to be compared to the manufacturers specifications and tested values. However, as … Read more
In the first instance it is all about requirements. What are the hard points, the inviable parameters? My first thoughts are around these headings: This post has been built based on the support of and sponsorship from: Quarto Technical Services, Eatron Technologies and About:Energy Initial sizing is around Electrical and Thermal. The Battery Calculations Workbook has some great tools to … Read more
Examples of battery pack configurations, going up in total energy content down the page. Sort of as we have separated out the packs that are arranged as multiple packs in parallel, arranging them based on the size of the basic building block. Series and Parallel When assembling large battery packs it is necessary to connect … Read more
We would expect to see an improvement in Cell to Pack Ratio vs Cell Capacity. That means that as the cell get larger so the use of the pack volume becomes more efficient. As expected the transport battery data from the pack database shows this relationship. However, the upper pareto frontier for the data shows … Read more