Sinexcel-Re, 2/F, Building #5, Baiwangxin Industrial Park, Nanshan, Shenzhen (2026)

20/09/2026

🇺🇸🇨🇳 Chinese EV & Battery Companies May Join Xi’s U.S. Visit

According to Reuters, executives from several major Chinese companies may join President Xi Jinping during his upcoming visit to Washington.

Companies reportedly under consideration include BYD, CATL, Xiaomi and Gotion.

The final delegation has not yet been confirmed.

For the battery industry, the news is interesting because it comes as Chinese EV and battery companies continue to navigate international markets, supply chains and different regulatory requirements.

The potential delegation also highlights how closely connected the global battery industry has become with:

🔋 Battery manufacturing
🚗 EV production
🌎 Global supply chains
🤝 Technology partnerships
⚖️ Market access and regulations

As the battery industry continues to expand globally, these factors will remain important alongside battery technology and manufacturing capacity.

18/09/2026

🔋 Battery Internal Resistance vs. DCIR: What's the Difference?

Internal resistance and DCIR are closely related, but they don't mean exactly the same thing.

🔹 Internal resistance describes the resistance inside a battery that causes voltage loss and heat generation.

🔹 DCIR is a specific test method that uses a controlled DC current pulse to measure the battery's voltage response.

A simple DCIR calculation is:

DCIR = ΔV / ΔI

DCIR testing can help engineers evaluate:

⚡ Power capability
🔋 Battery performance under load
🌡️ Heat generation
📉 Aging and degradation
🔍 Cell-to-cell consistency

One important point: DCIR results depend strongly on SOC, temperature, current, pulse duration, and other test conditions.

So when comparing batteries, consistent test conditions are just as important as the resistance value itself.

11/09/2026

🔋 Battery Rate Performance Testing for Lithium-Ion Batteries

How does a lithium-ion battery behave when the discharge rate increases?

Rate performance testing provides a practical way to find out.

Engineers test the battery at different C-rates and monitor:

⚡ Capacity
🔋 Energy output
📉 Voltage drop
🌡️ Temperature
🔄 Capacity recovery

A typical test might move from a low C-rate to higher C-rates and then return to a lower rate.

This helps evaluate the battery's high-rate capability, polarization, and overall performance under different power demands.

It's also useful when comparing different battery materials, cell designs, and chemistries.

Higher current doesn't just mean faster testing—it can reveal limitations that may not be visible at low C-rates.

08/09/2026

India Moves Toward Mandatory Battery Storage for New Renewable Projects 🔋

India is proposing mandatory battery storage for new solar and onshore wind projects from July 2027.

Under the draft rules:

🔋 At least 10% of project capacity would need battery storage
⏱️ 2-hour storage duration from July 2027
⏱️ 4-hour duration proposed from July 2029
⚡ New projects would also need grid-forming inverter capabilities

The message is clear: as renewable energy grows, energy storage and grid stability are becoming just as important as generation capacity.

BESS can help store surplus solar and wind power and deliver it when electricity is needed.

This could create new opportunities for the battery energy storage and testing industry as India continues its renewable energy expansion.

04/09/2026

🔬 Facebook Version

Cyclic Voltammetry (CV) Battery Test: How Does It Work? 🔋

Cyclic Voltammetry is a powerful technique for studying electrochemical reactions in battery electrodes.

A typical CV test involves:

🔹 Preparing the test cell
🔹 Setting the voltage window
🔹 Selecting the scan rate
🔹 Sweeping the voltage back and forth
🔹 Recording and analyzing the current response

The resulting CV curve can help researchers understand:

⚡ Redox reactions
⚡ Reaction kinetics
⚡ Electrode reversibility
⚡ Ion diffusion behavior
⚡ Electrochemical stability

For deeper battery analysis, CV can also be combined with EIS, GITT, PITT, and charge-discharge testing.

Understanding the electrochemical behavior is an important step toward developing better battery materials and cells.

What battery testing method would you like us to explain next?

01/09/2026

🔋 Nickel Exposure Reported at CATL’s Hungary Battery Plant

CATL’s battery plant in Debrecen, Hungary, has temporarily suspended work in three areas after nine employees were reported to have experienced elevated nickel exposure.

The affected areas include:

🔹 Cathode and anode foil laser cutting
🔹 Electrode foil winding
🔹 Cell drying

Authorities also identified deficiencies in the provision of protective equipment.

The plant is still in its ramp-up phase. While battery module production has already started, full-scale cell production has yet to begin. CATL plans to eventually expand the site’s capacity to up to 100 GWh per year.

This incident is a reminder that as battery manufacturing scales up, workplace safety, process control, and quality management become increasingly important.

High-volume battery production isn't just about capacity—it’s about producing batteries safely, consistently, and reliably.

28/08/2026

🔋 What Is GITT Testing in Lithium-Ion Batteries?

A standard charge-discharge test can tell us how much energy a battery can store.

But what if we want to understand how lithium ions move inside the battery?

The process is relatively straightforward:
⚡ Apply a small constant current for a short period
⏸️ Stop the current and let the battery rest
📊 Observe how the voltage changes and recovers
🔁 Repeat the process at different states of charge
During the current pulse, the battery experiences voltage changes caused by polarization, resistance, and lithium-ion transport.

During the rest period, the voltage gradually relaxes toward equilibrium.

By analyzing these changes, researchers can study:

🔹 Lithium-ion diffusion behavior
🔹 Diffusion coefficients
🔹 Voltage polarization
🔹 Electrochemical kinetics
🔹 Battery behavior at different SOC levels

GITT is especially useful in battery research because it provides a deeper look at what is happening inside the electrode materials—not just how much capacity the battery can deliver.

As battery technologies continue to evolve, from silicon anodes to solid-state batteries, advanced characterization methods like GITT are becoming increasingly important.

27/08/2026

❄️ Cold weather is still one of the biggest challenges for lithium-ion batteries.

When temperatures drop, batteries can lose usable energy, deliver less power, and charge more slowly.

That’s why Addionics’ new battery architecture is interesting.

Instead of focusing only on new battery materials, the company is working on the internal architecture of the battery itself. Its 3D porous current collector design aims to improve how ions and electrochemical reactions move through the cell, helping batteries retain more performance in cold conditions.

This could be important for applications such as:

🚗 Electric vehicles
🚛 Electric trucks
🚁 Drones
⚡ Energy storage
🛰️ Aerospace systems

But better battery designs also need to be tested under real operating conditions.

Engineers still need to evaluate:

🔹 Low-temperature capacity
🔹 Cold charging performance
🔹 Power capability
🔹 Internal resistance
🔹 Thermal behavior
🔹 Long-term reliability

The next breakthrough in batteries may not come only from new chemistry.

It may also come from rethinking how the battery is designed from the inside.

How important do you think low-temperature battery performance will become as EVs and energy storage expand into more demanding environments?

20/08/2026

🔋 LG Energy Solution Starts Battery Production in Lansing, Michigan
The facility is expected to reach more than 35 GWh of annual production capacity and will serve both the EV and energy storage markets.
Here’s what makes it interesting:

⚡ NMC cells → planned for Toyota EV applications, where energy density and weight are important.

🔋 LFP cells → already being produced for stationary energy storage, where cost, cycle life, and long-term durability are key.

🚗 Tesla → is also expected to source LFP cells from Lansing from 2027.

This reflects a broader trend in the battery industry: manufacturers are increasingly diversifying their production across different battery chemistries, applications, and markets.

Cell capacity, cycle life, internal resistance, charge-discharge performance, temperature behavior, and long-term reliability all need to be evaluated based on how the battery will actually be used.

As EV and energy storage markets continue to grow, battery manufacturing and battery testing will become increasingly interconnected.

What do you think will drive the next wave of battery demand — EVs or energy storage?

18/08/2026

🔋 Global Lithium Supply Chain: Why Chile Matters for the Future of Batteries

The global demand for lithium continues to grow as electric vehicles and energy storage systems expand worldwide.
According to recent industry reports, Coal India is considering acquiring a Chile-focused lithium business owned by Wealth Minerals, while the two companies have also applied for a lithium extraction licence in Chile.

This development reflects a larger trend: countries and companies are working to secure critical battery materials and build more resilient supply chains.

Lithium is a key raw material for many battery technologies, but a sustainable battery ecosystem requires more than resource availability.

From lithium extraction and refining to battery manufacturing, recycling, and performance validation, every stage plays an important role in building reliable energy solutions.

As the battery industry continues to evolve, collaboration across mining, materials, manufacturing, and testing will become increasingly important.

A stronger and more sustainable battery supply chain will help accelerate the global transition toward electric mobility and clean energy.

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