CATL 46145 LFP

CATL 46145 LFP battery cell specifications

Not many details of the CATL 46145 LFP cell as yet. However, it’s worth sharing as we know already that CATL are lined up to supply 46xx cells for the 2025 BMW Gen6 packs. The specifications appear in this CATL document that lists the basic parameters for their UPS Battery Rack System [1]. This post … Read more

BYD FC4680P

BYD FC4680 LFP cell

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”. Independently measured values shown in bold Key features Dimensions Safety Data Data as shown on manufacturers specification sheet. … Read more

PowerCo Unified Cell

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

LG Chem 18650 lithium ion cells

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

Estimating Cell DCIR

electrical symbol showing single cell and internal resistance

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