EV
Electric vehicle charging at home

EV Battery Health Test. Done From Home. No Dongle. No Workshop.

An unproven battery leaves the price open to argument. One charge at home is all it takes to generate a certificate anyone can verify in seconds, so there's no worst case left to argue. Sell with proof. Buy with confidence.

Check Your Battery

Simple steps.
No payment
until your result
is ready.

Check Your Battery

Step 1

Connect your car. Free. 60 seconds.

Sign in with your manufacturer account, the same app you use every day. Read-only, battery data only, no payment.

Step 2

Press Start Audit, plug in, wake up to your result.

One charging session is all it takes: from under 20% up to 80%, home AC charging only. Press Start Audit first, then plug in. LFP? Charge to 100% first.

Step 3

Unlock and share. $149.

Download your certificate and add it to your Carsales, Gumtree or Facebook Marketplace listing. Buyers scan the QR code and verify on our servers, independent of you.

Proof strong enough to
stake a price on.

Every reading comes straight from the manufacturer cloud that already governs your car.
No dongles, no screenshots.

Official cloud data

Read via authorised API connection.

Encrypted end to end

Battery health data only. No car controls, no location.

Original Equipment Data

No estimates, no dongles.

VIN-Locked Report

Tied to your vehicle only.

Supported vehicles

TESLA
POLESTAR
HYUNDAI
KIA
VOLVO
FORD
BYD
Volkswagen

Certification

A certificate buyers cannot argue with.

Read from the manufacturer's official cloud. Not your phone, not a screenshot, not a port anyone controls.

VIN-locked. Cannot be reused, transferred or borrowed by another listing.

Public QR verification. Every buyer scans it and sees our live record.

Independently verified proof settles it before negotiation starts.

Five grades. One clear answer.

Bands are 9 to 14 points wide, so an excellent battery never accidentally grades moderate.
Your result stays private until you unlock and share it.

Excellent

95 to 100%

Peak condition. Buyer hesitation disappears. Full asking price.

Strong

85 to 94%

Normal wear, verified. Negotiation moves to the car, not the battery.

Moderate

75 to 84%

Noticeable degradation. Price fairly upfront and avoid collapsed deals.

Declining

60 to 74%

Significant degradation. Price accordingly, avoid post-sale disputes.

Replace

Below 60%

Replacement likely. Price honestly, or weigh a trade-in.

EV charge connector

Statistics

The research is in.
Certified EVs win.

Auction houses and dealer groups already certify batteries before selling.
Why would you skip it privately?

UK data agrees: certified EVs sold 7.3 days faster on average (43.1 versus 50.4 days). And a UK auction trial of cloud-based certificates, built from manufacturer API data exactly as ours are, found certified Teslas drew 20% more views, 34% more unique views and 10% more bids.

Sources: Aviloo six-country research; Generational UK sales data, Oct 2025; Volteras UK trial, Jun 2026.

Up to 46% faster

Certified EVs sell faster than uncertified counterparts across six-country research.

$1100 to $2700 more

What buyers will pay extra for a used EV with a certified battery health report.

57% of buyers

Would consider a used EV they otherwise would not if it carries an independent certificate.

What sellers tried before.
Why it was never enough.

Your word, your app screenshot, a dongle in a port you control: still your word.
A workshop test is credible, but costly, slow, and hard to schedule.

Native app

OBD2

Workshop

EV TrustSeal

Independent

× No
× No
✓ Yes
✓ Yes

Verifiable record

× No
× No
✓ Yes
✓ Yes

Mfr cloud data

Seller's

× No
× No
✓ Yes

Buyer QR verify

× No
× No
× No
✓ Yes

Time

n/a

1 to 2 hrs

3 to 5 hrs

Within hours

Cost

$0

$50

$250 to $350

$149

Stop guessing
what you could simply
prove.

The battery was fine. That's the deal EV TrustSeal exists to save.

R

"If you could provide an accurate legitimate 3rd party picture of my battery health for $99, I would pay this."

Recencybias3 / r/AustralianEV

O

"Second hand buyers of ICE vehicles pay for their own pre-purchase inspections. This is a very similar concept."

Ok_Lunch_2933 / r/AustralianEV

D

"As a buyer, the choice would be easy, if one owner is willing to do the test and another is not."

Dennis-v-Menace / r/AustralianEV

Pricing

Choose the proof you need.
No subscription.

Available now

Battery Health Certificate

$149

USD

Health grade

Verified SoH

Vehicle details

Public QR code

PDF download

Permanent verification URL

Available now

Battery Health + Vehicle Condition

$169

USD

Everything in Tier 1

Manufacturer-reported vehicle condition

Up to 8 manufacturer system checks

Active fault codes and high-voltage battery

Battery conditioning and EV charging system

Drive unit, low-voltage battery and safety systems

Coming soon

Complete EV Certificate

Everything in Tier 2

Vehicle history

Finance status

Stolen and written-off checks

Owner count

Accident history

Changed your mind? Request a refund within 14 days when no report access is recorded after your complimentary 10-minute QR test window. Your statutory rights are always protected.

Frequently asked questions

After. Connect free, and pay the $149 only when your verified result is confirmed ready. No charge to connect, no charge if we cannot generate your result.

Drive until the battery is under 20%, press Start Audit, then charge to 80% in a single AC session. DC fast charging does not qualify.

Yes. They scan the QR code and land on our verification page, served from our live record. You cannot edit what they see.

In Australia: Tesla and Polestar. In the US, UK and Canada: 46 brands including Tesla, Hyundai, Kia, Polestar, Volvo, Ford, Chevrolet, Rivian, Volkswagen, Nissan and BYD. Not on the list yet? Leave your email and you'll hear from us the day your brand goes live.

Within 3 to 5 percentage points, because we measure delivered energy across a wide charging window rather than quoting a dashboard estimate.

You don't pay. If the session is interrupted, drive normally until you are under 20%, press Start Audit, and plug in again.

No. The connection is read-only through your manufacturer's authorised interface. Nothing is installed or written to the car.

A tracking app shows a number on the owner's phone. A TrustSeal certificate is VIN-locked, served from our servers, and independently verifiable by the buyer.

Yes. Your credentials go to your manufacturer's own login screen and never pass through our servers. Battery data only. Revoke any time.

One extra step, done first: charge to 100%, then drive under 20%, press Start Audit, and charge to 80%.

Only if you make it public. Private until you unlock and share the link or QR code.

Your car already measures what matters while it charges and reports it to the manufacturer's cloud. We read that data through an authorised, read-only connection and independently calculate the battery's usable capacity.

Then you found out first, and privately. Your result stays locked until you choose to unlock and share it. Knowing first lets you price the car honestly and keep the deal intact.

No. Every certificate permanently states its audit date and the odometer reading at the time of the test.

Yes. Send the seller this page. The certificate arrives VIN-locked with a QR code you can verify independently.

No. Every certificate is VIN-locked and lives on our servers. An edited PDF fails the live QR verification.
End-to-end encryption
Official manufacturer data
VIN-locked certificate

Stop guessing.
Start certifying.

The question is coming. Have the answer ready.

Check Your Battery