from chemistry to pack
CATL’s automotive-grade NMC811 prismatic cell ships with a headline safety feature: a “Dual Vent Safety Design.” The specifications: We believe this cell is for ACC. Jerry Wan shared details of this CATL cell on LinkedIn and it got us thinking: Why vent design matters more on NMC811 A cell’s vent only has one job: get … Read more
We have initial data for the 2026 BYD Short Blade 2.0 cell based on a shared [1] teardown of a 75.6kWh pack. Specifications Charge Rate – supports a massive 8C peak charge rate. Under optimal conditions with the right charger, this rate allows the short blade battery to charge from 0% to 80% (and potentially … Read more
Author Dr. Simon Madgwick of Nuvvon Inc. In yet another breakthrough Nuvvon has used its Solid Polymer Electrolyte (SPE) to combine a high silicon anode with a high nickel cathode. See below data set for 1Ah 40% silicon graphite vs NMC 811. Crucially, the SPE is able to accommodate traditional expansion issues associated with high silicon, without … Read more
The Ampace JP40 is a tabless 21700 cylindrical format cell designed to deliver high current discharge. Metrics A significant improvement in performance is achieved with the tabless design. The manufacturing video appears to show the ends of the jelly roll being bent over by an anvil that quickly comes in and punches the roll end … Read more
The Tesla 4680 Cell Generation 2 is interesting as this has been in the battery and electric vehicle news so much. We originally looked at the Tesla 4680 cell back in November 2022, since then lots of progress and once again The Limiting Factor have done a teardown. The “roses” that collect the edges of … Read more
We are very lucky to have the specifications of two battery cells made by the same company and one being LMFP and the other LFP. Thus an opportunity to look at LMFP vs LFP in a like for like scenario. Both cells are from K-Tech New Energy Company Co Ltd (part of Greenway Battery). K-Tech … Read more
What makes a Blade or Prismatic cell what it is? Blade cells are long, thin and have a terminal at each end. But so do some prismatic cells. Is it the ratio of the side dimensions? The following graph shows data from the Cell Database where we have plotted the ratio between the middle dimension … Read more
CATL BTF0 161Ah LFP is the cell used in the 55kWh Tesla Model 3 SR pack. Sandro Stock et al [1] have published a cell teardown and analysis. This gives an insight to the cell characteristics and design. The cell is made by CATL. Spcifications Jan Schöberl et [4] Metrics It has two jelly rolls, … Read more
The Hina NaCR32140-MP10 is a sodium ion based chemistry cylindrical cell with a capacity of 10Ah. In the original release of this cell we saw a specification showing 12Ah (left image). However, the volume production shows this 32140 format is a 10Ah Sodium Ion cell. Key Metrics The maximum power has been calculated based on … Read more
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