This battery pack makes Tesla Roadster 400 lbs lighter, but it ain’t cheap
A battery pack manufacturer has released a new solution for Tesla Roadster with aging battery packs. It would slash the car’s weight by about 400 lbs, but it’s not cheap.
In many ways, the Tesla Roadster sparked the electric vehicle revolution.
It was the first commercially available consumer EV with lithium battery cells – enabling over 200 miles of range on a single charge.
The vehicle had comparable or better performance than many other gas-powered vehicles in its segment.
The Roadster had its problem. It was a suboptimal solution as it was still heavily based on the Lotus Elise and not designed from the ground up to be electric, but it did its job as a proof-of-concept.
Tesla only manufactured about 2,000 of them between 2008 and 2011 before moving on to the Model S and other vehicle programs that were built to be electric from the ground up.
Despite being 13 to 16 years old, many Roadsters are still doing well. Electrek’s own Jamie Dow drives his daily. That’s despite Tesla not doing anything with the Roadster program since 2017 when it launched the Roadster 3.0 replacement pack.
Battery technology has improved a lot since then, and a company has decided to take advantage of that and offer a new battery pack for Tesla Roadster owners.
re/cell, a Texas-based supplier of remanufactured battery packs for EVs, has unveiled a new Roadster battery pack that aims to slash hundreds of pounds off of the sports car.
Unlike Tesla’s latest vehicles, which are equipped with skateboard-like platform battery packs, the Roadster has a pack that sits behind the seats in the back and the modules are in the shape seen above.
It does cause problems with balancing the weight of the vehicle.
The pack is able to achieve the Roadster’s peak power output, but it should be a lot more fun to drive by shaving up to 400 lbs off of the car’s original 2,877 lb (1,305 kg) weight.
It does come with a lower energy capacity than the original 53 kWh, but you should be able to achieve very similar range (over 220 miles) thanks to the efficiency gain from the weight loss.
Here are the full specs of re/cell’s new Roadster battery replacement pack:
- Peak Power Output: 260 kW / 285 kW
- Weight Savings: up to 400 lbs / 180 kg
- Volume Savings: 3.7 cu ft / 100 liters
- Energy Capacity: 38 kWh / 47 kWh
- Rated Range: 220-240 miles / 350-390 km
- Cell Type: 18650 / 3500 mAh
- Cell Configuration: 31p99s / 39p99s
re/cell describes some of the improvements that they were able to make to the pack:
The revolutionary cooling-block design is a single-piece molded core with Palladium-class cooling ribbons for improved cooling and temperature management. The contact area for heat transfer is 50x larger than the cooling tubes used in the original Roadster sheets and the overall surface area for cooling and heating is now more than double. No more vacant cooling voids allowing for hot spots or uneven cooling or heating – the entire cell is now fully encapsulated and temperature controlled!
However, this offer is not going to be for everyone since Roadster owners need to be willing to invest $28,000 in their aging vehicle, which is the price of the pack if you give your existing pack to re/cell.
Interestingly, the company is also thinking about offering other upgrades that can be enabled by space freed up by the new pack.
For example, re/cell believes it would be easier to make the pack capable of DC fast-charging. liquid cooling for the PEM and Motor
Electrek’s Take
I really enjoyed driving the Roadster 3.0, and I’d be curious to see how much better it would handle with 14% less weight.
There are just no other electric vehicles out there that weigh just 2,400 lbs. Even a Fiat 500e weighs nearly 3,000 lbs.
I can’t wait for small electric sports cars around 2,500 lbs. They should be so much fun and it sounds like this, despite not being designed from the ground up for it, could be an interesting preview.
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Tesla is going to build a new Megafactory in Texas near Houston, according to a tax abatement agreement with Waller County.
At the time of writing, Tesla had yet to comment on the new project, but the Waller County Commissioners Court confirmed the project on Wednesday when they approved a tax abatement deal with the company:
Under the proposed agreement, Tesla will receive tax abatements from Waller County based on property improvements. The deal includes $44 million in facility improvements and $150 million in Tesla manufacturing equipment that Tesla will install. The next phase involves a new $31 million distribution facility with about $2 million in Tesla distribution equipment and building upgrades.
Tesla is going to take over a 1-million-sq-ft building that it already held the lease on at the Empire West industrial park near Katy, Texas – just outside of Houston.
Logistics company DB Schenker occupied the space where it handled parts for Tesla, but it will move out and Tesla plans to build Megapack production lines at the site:
Tesla will operate a new Megapack battery storage manufacturing facility at a 1 million-square-foot building, which was initially constructed with no tenant on speculation that it would attract jobs and economic development.
Tesla has previously referred to plants producing Megapacks as “Megafactory”. The company already operates one in Lathrop, California, and one in Shanghai, China, where it just started production.
Those factories are set up for a production capacity of 40 GWh worth of Megapacks per year.
It’s not clear if Tesla plans for a similar capacity at this new factory, but the county announced project should result in creating 1,500 jobs.
In addition to the existing building, the project will include the construction of an additional “600,000-square-foot distribution facility with some manufacturing capabilities.”
Unlike its automotive business, Tesla’s energy business has been growing at an impressive pace – although prices and margins have come down last year.
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![Is Genesis taking notes from Porsche? New GV60 Magma caught with the Taycan [Video]](https://i0.wp.com/electrek.co/wp-content/uploads/sites/3/2025/03/Genesis-GV60-Magma-Porsche-2.jpeg?resize=1200,628&quality=82&strip=all&ssl=1)
Genesis is gearing up to unleash its alter ego with its upcoming Magma lineup, its debut into the world of high-performance luxury vehicles. First up is the Genesis GV60 Magma, due out later this year. As testing wraps up, the GV60 Magma was spotted alongside none other than the Porsche Taycan.
The first dedicated Genesis EV model, the GV60, will kick off another new chapter for the Korean luxury automaker.
Genesis unveiled the GV60 Magma last March, claiming it will kick off “the brand’s expansion into the realm of high-performance vehicles.” The performance EV includes an improved battery, chassis, and motor for added performance.
The Magma model boasts a wider, lower stance for more control. Other key upgrades include a wider front air intake to help cool the batteries, motor, and brakes. It also includes air curtains to maximize efficiency and an added roof fin channels air to the rear wing, generating downward force.
Genesis upgraded the interior to match the GV60 Magma’s luxurious, sporty design. It includes unique sports car-like bucket seats with exclusive “double-diamond stitching” in the Magma orange and titanium coloring.
Genesis GV60 Magma spotted with the Porsche Taycan
With its official debut coming up, the sporty Genesis GV60 Magma was spotted testing alongside a Porsche Taycan and Hyundai’s IONIQ 5 and IONIQ 6 N models.
Despite the camouflage, the video from CarSpyMedia reveals a few new design elements, like the two-line headlight featured on the updated GV60 model.
Genesis will launch the GV60 Magma later this year in its home market, followed by the US, Europe, and others. Production is scheduled to start in the third quarter of 2025.
Will the Genesis GV60 Magma keep up with the Porsche Taycan or Tesla Model S Plaid? Priced and specs will be revealed closer to launch, but it will sit above the Performance AWD trim, which starts at $69,900 in the US. With up to 429 horsepower and 516 lb-ft of torque, it can hit 0 to 60 mph in 3.7 seconds.
| Horsepower | 0 to 60 mph (seconds) |
Starting Price | |
| Genesis GV60 Performance | 429 | 3.7 | $69,900 |
| Genesis GV60 Magma | ? | ? | ? |
| Porsche Taycan | 402 | 4.5 | $99,400 |
| Porsche Taycan Turbo GT (with Weissach Package) |
1,092 | 2.1 | $230,000 |
| Tesla Model S Plaid | 1,020 | 1.99 | $89,990 |
In comparison, the Porsche Taycan starts at $99,400 with up to 402 hp and a 0 to 60 mph time in 4.5 seconds. The Taycan Turbo GT, equipped with its Weissach package, packs 1,092 hp for a 0 to 60 mph sprint in just 2.1 seconds, but it costs $230,000.
Tesla’s Model S Plaid starts at $79,990 and can accelerate from 0 to 60 mph in 3.1 seconds with 1,020 horsepower. Which performance EV are you choosing?
Source: CarSpyMedia
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