Electric Cars

A groundbreaking study analyzing the health of 500,000 electric vehicle batteries over five years has offered reassuring insights into their durability. The comprehensive research, undertaken by the EV battery diagnostics firm Aviloo, assessed 20 prominent electric car models across North America, South America, Europe, Asia, and Australia. The findings largely dispel concerns about rapid battery degradation, revealing that the majority of EV batteries maintain a significant portion of their original capacity, even after accumulating tens of thousands of miles. This extensive data confirms that electric vehicles are a robust long-term investment, though individual vehicle choice and usage patterns can notably influence battery longevity.

Aviloo's evaluation focused on the 'state-of-health' (SOH) scores, which represent the percentage of a battery's initial usable capacity that remains. A higher SOH directly correlates with a greater retained driving range. The study tracked median SOH scores at key mileage intervals: 50,000 kilometers (approximately 31,068 miles), 100,000 kilometers (approximately 62,137 miles), and 150,000 kilometers (approximately 93,205 miles). This systematic approach allowed for a clear comparison of how different EV models performed over time and distance.

At the 50,000 km mark, the Hyundai Ioniq 5 emerged as the leading performer, retaining over 97% of its battery capacity, effectively performing like a new vehicle in terms of range. Following closely was the Mercedes-Benz EQA, which maintained 96.56% of its capacity. Notably, almost all 20 models in the study recorded median SOH scores above 90%. Exceptions included smaller EVs like the Renault Zoe and Nissan Leaf, which utilize air-cooled batteries. Aviloo's analysis suggested that smaller battery capacities in these models necessitate more frequent charging cycles to cover the same distances, contributing to accelerated degradation.

The trend of impressive battery retention continued at the 100,000 km milestone, where the Hyundai Ioniq 5 once again secured the top position, exceeding 95% remaining capacity. Other strong contenders at this stage included the Mercedes-Benz EQA (95%), Hyundai Kona Electric (94.3%), BMW i4 (94.3%), and Ford Mustang Mach-E (93.45%). Excluding the aforementioned outliers, all models maintained at least a 90% median health score, underscoring the overall resilience of modern EV battery technology.

By the 150,000 km mark, most EV models showed median battery capacities ranging from 90% to 94%. The smaller Mini Cooper SE (87.11%), Leaf (86.67%), and Zoe (87.33%) exhibited lower retention rates. The Ioniq 5 and EQA remained at the forefront, with 93.79% and 93.97% capacity, respectively. The BMW i4 (93.62%), Kona EV (92.95%), and Volvo XC40 Recharge (92.79%) also demonstrated excellent long-term performance. Interestingly, Tesla's Model Y and Model 3, while respectable, fell into the mid-to-lower range of the group, with the Model Y at 90.3% and the Model 3 at 88.94% after 150,000 km. The Hyundai Ioniq 5 consistently stood out as a leader in battery longevity across various mileage points.

While the study generally paints a positive picture for EV battery longevity, it also highlighted the significant variability in outcomes. For instance, a Model Y after 150,000 km could retain anywhere from 82.9% to 94.9% of its capacity, and a Model 3 between 80.28% and 94.53%. Factors such as warmer climates, frequent use of fast charging, and regularly maintaining a 100% charge for extended periods can accelerate degradation. Additionally, different battery chemistries employed by manufacturers play a crucial role in how batteries age. Calendar age also contributes to battery wear. These variables emphasize that while EV batteries are generally robust, owner practices and environmental conditions can significantly impact their performance over time. This research provides valuable insights for both current and prospective EV owners, indicating that a 10% range reduction after 100,000 miles is a reasonable expectation, though individual experiences may vary.

Revolutionizing Commercial EVs: Compact Power, Zero Emissions

The Genesis of an Electric Power Take-Off System

The electric semi-truck brand Windrose has engineered an entirely electric power take-off (PTO) unit capable of delivering a robust 70 kW of energy without consuming any diesel fuel. This development could provide their substantial battery electric vehicles (BEVs) a distinct competitive edge in the market.

Windrose's Journey and Market Impact

Antwerp-based Windrose has navigated a journey filled with both scrutiny and acclaim. Despite early skepticism labeling it anything from a “Tesla Semi imitator” to a “publicity stunt,” the R700 electric semi has consistently impressed testers. Notably, one unit successfully transported a combined load of 75,000 lbs over 578 miles between Colton, California, and Buckeye, Arizona, along the crucial I-10 freight route.

Empowering Vehicle Transport Fleets with Electric Capability

Building on its proven performance, Windrose is now extending its electric capabilities to vehicle transport fleets. These specialized carriers (as depicted below) have substantial power requirements for their operations. Wen Han, CEO of Windrose, stated, "We believed that all cars, including EVs, should be moved by electric trucks. Unable to find a suitable electric power take-off (EPTO) solution for ramp and rack power, we created our own. It's the size of an iPad, seamlessly integrated into our custom-designed e-axle, delivering 70kW from our 800V high-voltage platform with zero emissions."

Demystifying the Power Take-Off (PTO) Concept

For those unfamiliar, a power take-off (PTO) functions as a mechanical power output, channeling energy to external machinery such as a dump bed, cherry picker, or plow. In traditional diesel trucks, the PTO typically draws power from the transmission or engine, utilizing the running engine for mechanical force. However, electric trucks lack an idling combustion engine, necessitating power conversion from their battery to mechanical energy for auxiliary equipment. This generally involves incorporating an electric motor and power electronics to drive pumps or other accessories.

Addressing the Challenge of Electric PTO Integration

While companies like Mack and Volvo can integrate electric drive motors with their existing automated transmissions, trucks employing independent electric motors without a transmission, such as the Tesla Semi, face a challenge in providing compatible power for the vast ecosystem of trailers, hydraulic pumps, cherry pickers, cranes, and plows designed for conventional mechanical PTOs.

Windrose's Innovative EPTO Solution

Windrose has pioneered an alternative solution by embedding its EPTO within a compact module directly integrated into the company's proprietary e-axle. This ingenious approach has garnered considerable attention within the industry. Ken North, an emerging technologies consultant for the North American Council for Freight Efficiency (NACFE), lauded the innovation, remarking, "An EPTO has the potential to transform an electric highway truck into a Swiss-Army-Knife of application possibilities, especially here in Canada. Excellent work, Windrose!"