Tesla Semi battery sizes confirmed: 822 kWh and 548 kWh officially revealed

California's Air Resources Board confirmed Tesla Semi battery capacities at 822 kWh for the Long Range and 548 kWh for the Standard Range, using 4680 cells with NCMA chemistry. These official figures are smaller than Elon Musk's earlier 2022 estimates. For Tesla owners and enthusiasts, this provides concrete data on the Semi's energy storage, clarifying its real-world range and efficiency expectations.

May 08, 2026

Model 3/Y

Tesla updates Model 3 RWD Supercharging specs, suggesting no Sunwoda battery switch yet

May 08

Model 3/Y

Tesla quietly reduces Model 3 Premium RWD battery warranty in Canada

May 08

Tesla Semi

Tesla Semi Battery Sizes Revealed, Highlighting Threat to Diesel Truck Economics

May 07

#Battery

11 articles

Stock & Business • Apr 10, 2026

Tesla adds China’s Sunwoda as fifth global EV battery supplier amid margin pressure

Tesla has added China's Sunwoda as its fifth global battery supplier, with its LFP cells already being used in vehicles built in Shanghai for export. This move is part of Tesla's strategy to diversify its supply chain and reduce costs, as the company faces pressure from declining automotive gross margins.

Charging • Apr 02, 2026

Tesla highway charging: tips to optimize every stop (2026)

The article offers advice for Tesla drivers to make highway charging stops more efficient, moving beyond the car's already automated systems. It suggests that poor timing and overly long sessions can be suboptimal despite the vehicle's built-in trip planning and battery preconditioning. The tips are aimed at helping owners save time and potentially reduce charging costs on road trips.

Tesla Semi • Mar 27, 2026

Tesla executives share deep insights into the Semi’s design, battery, range, and engineering

Tesla executives have provided new technical details about the Semi truck's design, battery, and engineering in a feature with Jay Leno. This reveals significant progress and specific capabilities of the long-awaited electric semi-truck. For enthusiasts, it signals the vehicle is moving closer to full-scale production and delivery.

Tesla Semi • Mar 23, 2026

Tesla Semi has a million-mile battery, claims Tesla

Tesla has revealed new details about its Semi electric truck, including a battery designed to last one million miles. The 500-mile version has also achieved weight savings that allow it to match the payload capacity of traditional diesel trucks. This indicates significant progress toward production and a major competitive advantage in the commercial trucking industry.

Stock & Business • Mar 16, 2026

Tesla and Syrah extend deadline a fourth time to resolve graphite supply dispute

Tesla and Syrah Resources have extended their supply agreement deadline for a fourth time due to unresolved technical issues with battery-grade graphite. This indicates ongoing challenges in securing a stable supply of this key battery material. For Tesla owners and enthusiasts, it highlights the complexities in the EV supply chain but suggests Tesla is working to secure long-term production inputs.

Latest • Feb 25, 2026

Tesla expands US LFP battery supply with LG Energy Solution deal: report

Tesla has reportedly reached a deal with LG Energy Solution to expand its supply of LFP batteries in the US. This move aims to secure a more stable and cost-effective battery supply for its vehicles. For owners and enthusiasts, this could lead to more affordable Tesla models and greater production capacity in the North American market.

Charging • Jan 31, 2026

Mastering Winter in a Tesla: Essential Tips for Optimal Charging

Tesla has released key recommendations for charging electric vehicles in cold weather to maintain efficiency. The tips focus on strategies like preconditioning the battery and home charging routines to ensure faster and more reliable charging during winter. This guidance is meant to help Tesla owners optimize their vehicle's battery performance and range in freezing temperatures.