New Tesla Model Y Supercharging Reality Check: Brand New Battery or Bust?

New Tesla Model Y Supercharging Reality Check: Brand New Battery or Bust?

Hey everyone, DennisCW here! If you've been following my channel, you know I'm all about diving deep into the latest Tesla tech. Today, we're tackling a hot topic: the new Tesla Model Y Performance (that's the refreshed 2024/2025 model with the brand-new battery pack). Rumors are swirling that its supercharging performance sucks. Is it true, or just a case of a fresh-out-of-the-box battery needing some love?

We headed straight to a 250 kW Tesla Supercharger to plug in and find out. Spoiler: the results might make you think twice about road trips... for now.

Protecting Our Ride: Enter the EVJ

Before we dive into the charge test, a quick shoutout to vehicle protection. Sketchy Supercharger cables can be a nightmare—broken nozzles, vandalism, you name it. That's where the EVJ (EVject) comes in. This breakaway device sits between the Supercharger and your Tesla, letting you drive away in seconds if needed.

Here's how it works:

1. Plug the EVJ into the Supercharger first.
2. Connect the other end to your Model Y—perfect fit, charging starts instantly.
3. Need to bail? Hit stop, unlock the port, and drive. The cable disconnects safely.

Demo in action? Check the video above. Want one? Use promo code Dennis for 30% off your first EVJ—link in the description!

The Supercharge Test: 20% SOC to Glory?

Arrived with 20% state of charge (SOC). On paper, this V4 Supercharger should hit 250 kW peak. Early charging graphs from other owners topped out around 200 kW max, but at 20% SOC? We should crush that.

Set the limit to 80%—Tesla predicts 30 minutes. Not terrible, but slower than older Model Ys. Let's see the real-time curve:

• Starts decent...
• Hits ~200 kW? Nope.
• Drops to 190 kW, 187 kW, 178 kW by 25% SOC.

Oof. That's not the fireworks we expected.

Why the Struggle? New Battery Blues

Blame the brand-new battery chemistry. It's not preconditioned or rated for peak supercharging yet. Tesla might be playing it conservative to protect longevity. Not the EVJ's fault—we demoed a clean drive-away mid-charge.

Verdict: Not road trip ready right now. 30 minutes from 20-80% is okay for daily use, but long hauls? We'll stick to our other EVs for now.

The Good News: Fixes Are Coming

Don't panic—this will improve. Software updates, battery calibration, and refinements are Tesla's MO. Fingers crossed for summer upgrades. In the meantime, precondition your battery and monitor those graphs.

What do you think? Share your Model Y supercharging stories in the comments below! Hit like, subscribe for more Tesla tests, and I'll see you in the next one.

Drive safe, DennisCW