Aviloo Alternative:
Why 47 Parameters Say More Than One Number

1. Why You’re Looking for an Aviloo Alternative

Aviloo is a Vienna-based startup and currently the best-known company in Europe for EV battery certificates. While less established in the US market, they are rapidly expanding internationally — having closed a €30 million funding round in early 2026. Their FLASH Test (3 minutes) and PREMIUM Test (7 days) are widely used by dealers and insurers across Europe, and the CARA certification has become a recognized industry standard.

Despite all that, people reach us every day with the same question: „I have an Aviloo certificate — but the car is behaving strangely. What’s really going on with the battery?“

Maybe you know the feeling: You saw a SOH number, you know the battery is at „87% health“ — but you don’t know why it balances oddly during certain charging cycles, why individual cells run hot, or whether there’s moisture in the system.

A single percentage number doesn’t answer those questions. That requires a different approach. And that’s exactly what we want to make transparent in this article.

2. What Aviloo Does Well — A Fair Look

First things first: Aviloo deserves respect. The Vienna-based team has created a genuine market for a problem that was previously invisible. Used EV buyers had no reliable way to check battery health for years. Aviloo changed that.

The Aviloo test analyzes approximately 15 parameters around charging behavior, voltage curves, and temperature. The result is a single SOH number (State of Health) that reflects overall capacity loss.

3. What Aviloo Can’t Do — The Blind Spots

Aviloo looks at the battery from the outside — the way a blood pressure monitor measures blood pressure. An important number, but not the full picture. Here are the specific limitations:

🧱 Brick-Level Analysis Is Missing

A Tesla battery (e.g., Model 3 LFP) consists of up to 96 individual Brick groups (cell packs). Aviloo gives you the overall state — but if 3 out of 96 Bricks are significantly weaker than the rest, the difference barely shows in the overall number. You see 89% SOH, while internally there’s an imbalance that can develop into an expensive problem over 12–18 months.

SoHWHAT analyzes all 96 Brick-CAC (Charge Acceptance Capacity) values individually. You see every single building block.

💧 Moisture Detection — The Invisible Threat

Moisture inside the battery pack is one of the most common causes of slow degradation and safety risks — especially in vehicles from flood-prone areas or with damaged seals. Aviloo doesn’t check for this.

SoHWHAT detects moisture signatures in the electrical behavior and can identify early warning signs before any visible damage occurs.

⚡ Weak Short — The Silent Killer

A „Weak Short“ is a microscopic internal short circuit in individual cells. It’s often undetectable in normal operation, but it can accelerate — especially during fast charging or at high temperatures. Aviloo has no detection for this.

SoHWHAT analyzes differential charging behavior (dSOC — differential State of Charge) at the cell group level, detecting anomalous self-discharge rates that point to micro-shorts.

📊 One Number vs. 47 Parameters

The fundamental problem: When you only see one number, you don’t know what’s behind it. 87% SOH can mean: uniform, natural aging across all cells. Or: 94% SOH in 90 Bricks and 40% SOH in 6 Bricks pulling the average up. These two scenarios are fundamentally different — both technically and financially.

4. SoHWHAT vs. Aviloo — The Feature Table

The difference isn’t just the number of parameters. It’s the origin of the knowledge: SoHWHAT wasn’t developed at a desk — it was developed in the workshop, on over 250 Tesla batteries that we’ve opened, repaired, and reassembled. We know what happens inside because we’ve seen it.

5. Real-World Example: Same Battery, Different Results

Imagine: A Tesla Model 3 Long Range, 2020, ~40,000 miles. Tested once with Aviloo, once with SoHWHAT.

What does this mean in practice? The vehicle could have been sold without issue under the Aviloo certificate — and within 12–18 months the buyer would have noticed a battery degrading unevenly, becoming increasingly inconsistent in range. Not an emergency, but not ideal either.

With the SoHWHAT report, the seller knows: A balancing service can be performed (often under €200 / ~$218), fixing the issue — and then the car can be sold transparently and with confidence.

6. Which Tool Is Right for Whom?

No tool is best for every situation. Here’s an honest assessment:

In short: If you need a certificate, Aviloo is a reasonable choice. If you want to understand what’s really going on with your battery — because you’re buying, selling, repairing, or simply want to be certain — you need more depth.

7. Conclusion: Aviloo Is a Good First Step

Aviloo built the market for battery certificates and did solid work doing it. With €30 million in backing, the company will continue to grow — and that’s good for the entire EV industry. More transparency in used car purchases is always progress.

But a certificate is not the same as a diagnosis.

SoHWHAT doesn’t come from the marketing department. We come from the workshop. We have opened, analyzed, repaired, and reinstalled over 250 Tesla batteries. We know what a battery looks like on the inside when it’s healthy — and when it isn’t. That knowledge is embedded in our 47 parameters, in the Brick-Level analysis, in the Moisture Detection, and in the TrueHealth Score.

If you want a number: Aviloo is enough.

If you want the truth: you know where to find us.