from chemistry to pack
The BYD FC4680P cell is a Lithium Iron Phosphate chemistry in the Tesla 4680 cell format. 4680 => 46mm in diameter and 80mm high A small plug in the top is described as an “explosion proof valve”. Only high level data is available on manufacturers spreadsheet and no independent test data has been found. Key … Read more
The PowerCo Unified Cell is a vision from VW to simplify it’s battery packs with one cell design that works across more than 80% of it’s products. When they say design, they actually mean cell format as it appears they are intending on having 3 different chemistries to support the cost / performance trade. Remember … Read more
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 built based on the support and sponsorship of: Quarto Technical Services, TAE Power … Read more
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 SOC discharge curves. Within this data is the DCIR value for the … Read more