Welcome to the Halftime Show.

The factories outside Longhua checkpoint was running a full send shift at 7am when I walked past it this AM. It always is.

I've stopped finding that remarkable. That's how you know Shenzhen has gotten to you.

Let's lock in.

CATL unveiled the world's first mass production sodium ion battery (Tianxing II series) on January 22nd. Planned for passenger vehicles in July 2026.

No lithium or cobalt or supply chain dependency on scarce materials.

A winter range MONSTER: 400km range, charges at -30°C.

The world's largest battery maker just made a decade of EV supply chain anxiety potentially obsolete.

→ CATL holds 38.1% of the global EV battery market, more than the next four manufacturers combined. When this company moves to a new chemistry at commercial scale, the industry follows. (Electrek)

→ Sodium is the sixth most abundant element on earth. Lithium is not. CATL's CTO: "We plan for sodium battery energy density to reach LFP levels within three years." The supply chain risk that justified a decade of EV tariffs runs on lithium scarcity. Sodium doesn't have that problem. (CleanTechnica)

→ CATL's sodium ion battery charges at -30°C, retains 90% capacity at -40°C, first to pass China's new national battery safety standard. The cold weather limitation that held back EV adoption in northern climates for a decade. (CarNewsChina)

→ BYD's new flash charging system targets full charge in 5 mins and 320 miles of range. Plans to build 4,000+ ultra fast chargers across China to support the rollout. Light on chemistry specifics at announcement - trust but verify territory as production vehicles arrive. (Axios)

→ Chinese automakers launched 91 of 180 new global car models between 11/2024 and 10/2025. BYD received approval for 38 new models in one twelve month period. Volkswagen got 6. Nissan got 2. Speed of product launch is a manufacturing moat, not a tech moat. (Rest of World)

The entire geopolitical argument around EVs has rested on one material: lithium.

Lithium is scarce. Geographically concentrated. Strategically controlled. It’s why:

Sodium is the sixth most abundant element on earth. It's in seawater. Every country on earth has access to it. It’s also 1/20th the cost of Lithium.

CATL launching the world's first mass production sodium ion battery for commercial vehicle: at 175 Wh/kg energy density, 400km range, and cold weather performance that outperforms lithium - changes the entire policy argument underneath it.

The cold weather detail is the one I keep returning to.

EV adoption in Scandinavia, Canada, Russia, and Northern China has consistently lagged because lithium batteries lose capacity in extreme cold. Sodium ion cells retain 90% capacity at -40°C and charge immediately when frozen.

That's a category expansion into climates where EVs have never fully worked.

Sodium go Brrrrrrrr.

CATL holds 38% of the global battery market. When they commit to a new chemistry at commercial scale- deploying across passenger EVs, commercial vehicles, and battery swap systems in 2026- the industry will inevitably follow.

While lithium ion batteries aren’t going anywhere, it’s becoming increasingly clear that the future of EVs will be defined by multiple battery chemistries coexisting.