Lithium Battery-school
Who is CATL?

CATL is the leading Lithium and as of 2023 Sodium-ion battery manufacturer in China and the World.

CATL (Contemporary Amperex Technology Limited) is a Chinese battery manufacturer that produces lithium-ion and as of 2023 sodium-ion batteries for electric vehicles (EVs) and energy storage systems. The company was founded in 2011 and has quickly become the leading EV battery manufacturer in the world. It supplies batteries to a number of major automakers, including Tesla, Volkswagen, BMW, and Toyota. CATL has also established a number of partnerships and collaborations with other companies in the EV and energy storage industries.

The company provides research and development, production, and sale of electric vehicle and energy storage battery systems. It also provides battery management systems, materials, battery cells, and battery recycling and reuse systems. These batteries are used in electric passenger vehicles, electric buses, electric trucks, and other special vehicles; and spare parts. The products of energy storage systems find their applications in renewable energy, communication base stations, grid frequency modulation, commercial and industrial buildings, and household energy storage. It also operates its business from Ningde, Fujian, China also has production in Germany, and overseas offices in Japan, France, and the USA regions.

LiFePo4 Video from CATL

Official CATL VIDEO

HOW China’s CATL makes its batteries

Lithium Battery-school News
Next-Generation Automotive M3P Batteries by CATL

CATL, the world’s largest Lithium Battery Manufacturer, has recently announced a new battery type, with a modified version of the LMFP chemistry, LMFP stands for Lithium Maganese Ferro Phosphate, its very similar to the LFP (LiFePo4) chemistry only that the manganese allows for the voltage to rise from the 3.2 to around 4.1v, this means there is higher energy inside the same form factor or another way to say that is the higher energy density.

CATL doesn’t do things unless they are tested, thought out, and ready for mass production.

Why Voltage matters

My two cents, what do we know about voltage and the effect it has on every type of Lithium Battery cells?

We know that the lower the nominal and fully charged voltage the longer the lifespan, if you look at LTO (Lithium Titanium oxide aka Li2TiO3) the nominal voltage lies at 2.3v and the lifespan can reach 20000 cycles with the fully charged voltage at only 2.8v.

Or if we look at what’s called ternary lithium cells, such as NMC (Lithium Nickel Manganese Cobalt Oxide aka LiNiMnCoO2 and NCA (Lithium Nickel Cobalt Aluminum Oxide aka LiNiCoAlO2) chemistry, the ones currently used by most Tesla’s (excluding the Chinese made Tesla’s that are not performance models) the nominal voltage is 3.7, but the full charged voltage is 4.2v, which is high, and it’s known that higher voltages translate into lower lifespans, which is why LFP does pretty well and can reach 6000 or even 10,000 cycles if treated well. It is also reported that Tesla will be one of the largest customers of CATL for the new M3P battery, with reports that the Tesla Semi will also use them.

So with rumors of the new M3P battery being manufactured by CATL, what have they managed to do, that gives a lifespan similar to LFP but still with the higher operating voltage? At this point we don’t know, as the information is not known, at least from my research I can’t find any further details on what they have added to the chemistry to enable the lifespan such as LFP.

According to CNEVPost, the M3P cells use the same olivine structure as LFP batteries. However, they replace iron with magnesium, zinc, and aluminum. There is speculation as to whether the Chinese website meant manganese instead of magnesium, but the information has not been corrected according to Autoevolution, so we are left to speculation.

Official data shows that the energy density of the CATL (LiMnZnAl) batteries will be about 15-20% higher than that of the LFP types, which hovers around 210 kWh/kg. This is a huge increase, and it’s believed it’s at a similar cost as the LFP battery.

It is also reported that Sunwoda and Eve Energy are all in the early stages of producing LMFP, with samples already being delivered to their partners for testing.

At this stage, we believe at first it will be very hard to get your hands on these cells, so I would estimate 2024 or even 2025 before this cell could be used for energy storage like we do today with the LFP cells.

And we still believe that LFP will have a longer lifespan, simply because of the voltage. We also now recommend a 90% DOD charge profile. 2.8v bottom and 3.45v top for your battery pack. We also believe keeping the draw at under 0.5C is a really good idea if you are wanting to achieve the huge cycle numbers and still have a good battery a few years from now.

Sources
1. CATL Promises M3P Cells For 2023, But What Are They? – autoevolution
2. Tesla Model 3 With CATL’s M3P Battery to Launch in China, Offers Better Range, Lower Price – autoevolution
3. Rumor: China-Made Tesla Model 3 To Get CATL’s M3P Batteries (insideevs.com)
4. Tesla Semi Specs Change, Chinese Model 3 To Use CATL M3P Batteries – CleanTechnica
5. CATL to announce first vehicles to be powered by Qilin Battery on Aug 27 – CnEVPost




News Home
EVE vs CATL

Both EVE and CATL are professional LFP Prismatic manufacturers in China.
CATL is the world’s largest battery manufacturer, and EVE is inside the TOP 10.
Both companies work with car manufacturers, like Tesla, Geely, and Dongfeng Motors.

Both of these companies are poised for huge growth in the coming decade.

Both of these manufacturers have produced slightly different battery compositions to cater for either a high C rate discharge or a longer life low C rate prismatic cell. The LF280K from EVE is now widely respected and known to be of high quality.

CATL however, is not selling cells directly to the public, so all CATL cells are sold on the grey market, on places such as Alibaba, and Made in China. Many of these sellers, do sell B-grade cells, so you are taking a huge risk to purchase from these marketplaces.

EVE does allow the purchase of LFP cells directly to the public however, most people choose not to purchase from EVE because they don’t understand that a huge percentage (98%) of Alibaba and Aliexpress cells are actually B grade cells. They also have very complicated shipping procedures which are very difficult for the average person wot work with.

EVE Logo 610x2861 1 wpp1630410453474
Model
Voltage
Capacity
Height
Length
Width
Weight (g)
LF50K
3.2v
50ah
185
135.3
29.3
1395
LF80
3.2v
80ah
170.5
130.3
36.7
1630
LF90K
3.2v
90ah
200.5
130.3
36.7
1970
LF100MA
3.2v
100ah
118.5
160
49.9
1920
LF105
3.2v
105ah
200.5
130.3
36.7
1980
LF173
3.2v
173ah
207
174
41
3250
LF230
3.2v
230ah
207.3
174
53.9
4110
LF280
3.2v
280ah
200
173.7
72
5220
LF280N
3.2v
280ah
200
173.7
72
5300
LF280K
3.2v
280ah
204.6
173.7
72
5420
LF304
3.2v
304ah
208.8
173.5
72
5490
1200px Contemporary Amperex Technology logo
Model
Voltage
Capacity
Height
Length
Width
Weight (g)
CB50
3.2v
50ah
135
175
30
1390
CB60
3.2v
60ah
220
135
29
1900
CB86
3.2v
86ah
133
173
47
2160
CB100
3.2v
100ah
170
200
34
2270
CB105
3.2v
105ah
167
200
34
2260
CB120
3.2v
120ah
170
174
48
2860
CB140
3.2v
140ah
171
200
46
3200
CB176
3.2v
176ah
205
174
54
3800
CB202
3.2v
202ah
201
174
54
4120
CB271
3.2v
271ah
207.2
174
71.7
5470
CB280
3.2v
280ah
207.2
174
71.7
5340
CB310
3.2v
310ah
208
174.5
72.5
5800

How to tell them apart visually

Let’s begin with the most common cell the 280ah capacity cells. The first thing you will notice is both have the QR code in the same location. However, the EVE cell has oval-shaped terminals and the CATL has circular.
Genuine EVE cells will also state the cell model. eg LF280 or LF280K

CATL 280AH

EVE LF280K

catl280AH 2022 1
LF280K QR
eve-lf280k-qr
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