Tesla Cybertruck owners who rely exclusively on the Supercharger network are reporting increased cases of high-voltage battery failures.
The first person to raise this issue is Mathew from Maryland, who says Tesla gave him a complimentary one-year Supercharger access with his Cybertruck purchase.
To maximize the benefit of the free Supercharger access, Matthew states that since taking delivery of the truck in September 2025, he has used the Supercharger network solely to charge his vehicle.
And now, after 10 months, his truck began flashing a high-voltage battery error, and when he took it to Tesla service, he was told he would need a new high-voltage battery.
The frustrated Cybertruck owner shared his experience on the Cybertruck Owners Club forum.
He writes…
“My Cybertruck needs a new high-voltage battery after only 12,000 miles and 8 months of ownership.
You read that right. The high-voltage battery in my Cybertruck needs to be replaced after just 12k miles. I asked my service center how often this happens, and they said at least once a month. For other Tesla models, it’s about 10-15 times per month, even though they sell nearly 2,100 cars each month.
Has this happened to anyone else, and if so, were there any problems afterward?”
Initially, Matthew was not sure why the high-voltage battery on his relatively new truck failed and asked fellow Cybertruck owners…
“Has anyone heard that consistently using a fast charger instead of a slow charger can harm the battery?”
In response, Cybertruck owners who experienced similar high-voltage battery failures said they often used Tesla’s Supercharger network, and they believe this might have contributed to their battery pack problems.
A fellow Cybertruck owner from Chicago, Griswold, writes…
“I used superchargers exclusively for about 9 months because of the free 1-year supercharging deal. My truck has under 5,000 miles, and now I’m getting a high-voltage battery error.
Anyone with experience here? What happens next? I have already put in a service ticket.
The error cleared, but I don't plan to drive it until I get it serviced. Would it not charge at all? I just charged yesterday morning, and on the third trip of the day, I got the error.”
In response, Matthew writes…
“This is exactly what I did starting in September, when I used the free supercharger access to supercharge exclusively.
Now, my high-voltage battery pack has failed out of nowhere.
When I received alerts that my truck wouldn't charge, I took it to the charging station, and the charge port wouldn't even open.”
A third Cybertruck owner from Pennsylvania with a 2026 Cybertruck reports that his high-voltage battery pack failed after only three months.
This owner notes that it has been almost a month since he dropped off his Cybertruck at Tesla Service for a battery replacement, but he is still waiting for parts to be available.
He writes…
“Just over 3000 miles on a 2026 Premium Cybertruck VIN 874xx. Got three alerts: unable to charge due to Voltage Sense Harness, triggers limp mode, and may not restart alert on June 28. No loaner until July 21.
Mine is the only truck at the Service Center for high-voltage battery replacement; all others are PCS. Still waiting for parts which were ordered on June 29.”
Unlike previous Cybertruck owners, this owner reports his battery pack failed after just 3,000 miles, even though he has never used a supercharger.
He writes…
The three high voltage battery alerts appeared suddenly without warning. I have never used supercharging; I only charged at home using the mobile connector set to 28 amps since the Cybertruck was new, about 7 months ago.
Overall, both groups—those who only supercharge their Cybertruck and those who exclusively charge at home—experience high-voltage battery pack failures. However, failure rates are appear higher among those who only supercharge.
Please let me know what you think in the comments. Share your ideas by clicking the red “Add new comment” button below. Also, be sure to visit our site, torquenews.com/Tesla, regularly for the latest updates.
For more information, check out: Tesla Cybertruck Owner Claims His Truck Has a 500-Mile Range at 55 MPH – He Adds, “It Only Costs $16 To Travel 500 Miles”
Tinsae Aregay has been following Tesla and the evolution of the EV space daily for several years. He covers everything about Tesla, from the cars to Elon Musk, the energy business, and autonomy. Follow Tinsae on Twitter at @TinsaeAregay for daily Tesla news.
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