EV and hybrid battery health test (SoH) with a full pre-purchase inspection, Sydney and NSW
The battery is the car. Test it before you pay.
EV & Hybrid Battery Health Check — $199 add-on, Sydney, Newcastle, Central Coast, Wollongong & Blue Mountains
- Battery test
- $199 add-on
- Forecast
- 5 years ahead
- Where
- Seller's address
- Certificate
- Publicly verifiable
- $199 add-onAdded to any package
- Five NSW regionsWe come to the seller
- Fully insuredIndependent of any dealer
- Read-only testNothing written to the car
AVILOO publishes its FLASH testing method and certificate information. Diagnostic compatibility and the method available for your vehicle are confirmed before inspection.
AVILOO method and limitationsVehicle-data analysis
AVILOO calculates FLASH State of Health using available vehicle data and its statistical model, rather than relying solely on a dashboard range display.
Three-minute FLASH test
The manufacturer lists a three-minute test runtime. Vehicle access, setup and the rest of an inspection take additional time.
Dated manufacturer result
An AVILOO-issued certificate records the test-time result. It is distinct from an Aussie Auto Care certificate and any separate forecast in the report.
Battery testing available on
We test electric vehicles from Tesla, BYD, MG, Polestar, Hyundai, Kia, Nissan, Toyota, Lexus, Volvo, BMW, Mercedes-Benz, Volkswagen, Cupra, GWM Ora, Mini and others. Hybrid battery tests are available for Toyota and Lexus models only.
Hybrid battery tests are available for Toyota and Lexus models only. Coverage depends on the vehicle's diagnostic protocol, tell us the year, make and model when you book and we confirm before the job is locked in.
Buying an EV or hybrid up in the Mountains? Blue Mountains inspections include the same $199 battery add-on, from Lapstone to Mount Victoria.
A clean service book tells you nothing about the pack.
On a petrol car, the engine's condition shows up in noise, smoke and oil. On an EV, the most expensive component in the vehicle degrades silently, and neither the odometer nor the dashboard will tell you how far along it is.
The pack is the most expensive part
A high-voltage battery replacement is by far the largest single repair on an electric car. Discovering a weak pack after purchase is not a $500 surprise, it changes what the whole car is worth.
Kilometres don't predict health
Two identical cars with identical odometers can sit several percent apart on State of Health, depending on charging habits, DC fast-charge frequency and how the car was stored.
Sellers can't prove it without a test
A dashboard range display alone cannot establish battery condition. A dated diagnostic SoH estimate adds information, interpreted alongside its method, available vehicle data and limitations.
How to read a State of Health number
The percentage on its own means nothing until you know which band it falls in. This is the same scale our inspectors use when they write the recommendation on your report.
Below 70%
Under the floor most manufacturers warrant to. Replacement or heavy depreciation is the realistic outcome.
70–79%
Meaningful range loss. Worth buying only at a corrected price, and only with the forecast in hand.
80–89%
Normal wear for age and kilometres. Fine to buy, but the loss belongs in the price you pay.
90–100%
Effectively factory-fresh capacity. Buy with confidence and use the certificate at resale.
Understand the battery result. Keep projections in perspective.
The chart is an illustrative five-year scenario, not an AVILOO certificate result. Any projection in your inspection report uses recorded battery data and model assumptions. It cannot establish future range, resale value or the date of a fault.
- Illustrative State of Health scenario, not a promised report horizon
- Modelled range, not a measured road test
- Warranty eligibility depends on the applicable manufacturer terms
- Read any report projection with its recorded assumptions and duration
5-year battery forecast
92% today → 82% in 5 years
Modelled loss
2.3% / year
Illustrative projection only. On a real inspection the curve is built from your car's State of Health result and its actual charge/discharge behaviour.
Today
92%
≈ 430 km
2029
86%
≈ 401 km
2031
82%
≈ 383 km
"It's had light use" isn't a figure. This is.
Move the slider to see what a given State of Health means in kWh and kilometres on the car you're looking at. The calculator is an illustration; inspection values depend on the available diagnostic data and method.
Capacity gap calculator
See what a few percent of State of Health actually costs you.
Capacity you're not getting
10.5 kWh
64.5 kWh usable today
Range you're not getting
67 km
≈ 413 km on a full charge
Straight arithmetic on the figures you enter, no pricing assumptions. A car advertised as "like new" at 86% SoH is 14% down on the battery it was sold with. That is the gap you take to the negotiation, and it's the gap we measure.
Buyers use our report two ways.
Renegotiate
A documented battery-health concern can support a discussion with the seller. Our Elite tier goes further, we negotiate with the seller on your behalf using the findings.
Walk away
Battery anomalies can inform a decision not to buy. They do not establish a warranty entitlement or a future failure date.
Supported battery data, with limitations explained.
State of Health (SoH)
A test-time estimate of capacity relative to when new. The source and diagnostic support matter; SoH alone is not a valuation.
Usable energy, now vs new
Available usable-energy values compared with the when-new reference. Values may be vehicle-reported or estimated, rather than directly measured.
Cell voltage spread
Available differences between cell voltages, interpreted with charge level and temperature. An anomaly is not proof of a failing module.
Pack temperature behaviour
Supported temperature readings at the time of assessment. Missing sensor data limits what can be concluded about the pack.
BMS & high-voltage fault scan
Available stored and pending battery and charging-system codes. Cleared codes may not remain recoverable; diagnostic access varies by vehicle.
Real-world range estimate
A calculated guide based on available capacity and consumption assumptions, not a measured road-range test or a promise of future range.
And the whole car, not just the battery
The battery test sits on top of a complete pre-purchase inspection, brakes, tyres, suspension, steering, 12V system, structural and accident-damage indicators, PPSR history and a road test. EVs are still cars, and they still get crashed, curbed and neglected.
Two real EV documents, un-edited.
No mock-ups and no marketing sample. Explore a historical EV inspection report and a separate AVILOO battery-test document. Contents depend on the purchased package and supported diagnostics.
Four steps, no workshop visit.
01
Book with the battery add-on
Pick your tier and add the EV / Hybrid Battery Test at checkout. Give us the year, make and model so we can confirm diagnostic coverage before we lock the job in. Hybrid battery tests are available for Toyota and Lexus only.
02
We come to the car
A mobile inspector meets the seller at their address, private driveway or dealership, anywhere across Sydney metro.
03
Battery + full inspection
The complete mechanical and safety inspection, plus a read-only session with the battery management system for the pack data.
04
Report + certificate
Your inspection report and dated battery results. AAC certificate verification is separate from AVILOO documents and any model-based report projection.
Inspection plus battery test, one flat figure.
The EV / Hybrid Battery Test is a $199 add-on on any tier. GST included, no travel charges in any region we cover.
Essential + Battery
$398
$199 inspection + $199 battery test
- Full visual safety and mechanical check
- OBD-II diagnostic scan
- Battery health + separate report projections
- Same-day written photo report
No mechanical guarantee on this tier
Comprehensive + Battery
$528
$329 inspection + $199 battery test
$495 with code SAVE10 (10% off the inspection)
- 150+ checkpoint inspection
- PPSR, repair-cost estimates, odometer rollback check where supported through the scanner
- Battery health + separate report projections
- Cell-level data and BMS fault scan
- Report issued instantly on-site
Comprehensive: up to $1,000 cover for 14 days or 1,000 km, whichever comes first, from inspection (Terms apply). High-voltage batteries and electric drive components are excluded.
Elite + Battery
$648
$449 inspection + $199 battery test
- Everything in Comprehensive
- Senior inspector + paint-depth on every panel
- Battery health + separate report projections
- We negotiate with the seller for you
Elite: up to $3,000 cover for 30 days or 1,000 km, whichever comes first, from inspection (Terms apply). High-voltage batteries and electric drive components are excluded.
EV/Hybrid Battery Test: +$199 add-on to any inspection (not included in any package; make/model support confirmed at booking). A PPSR check (finance owing, write-off and stolen status) is included with Comprehensive, Elite and Ute, Van & Light Truck; Essential doesn't include one.
An asset you keep — and resell with.
Example certificate summary
92%
State of Health · Excellent
Usable energy
70.2 kWh
Cell delta
18 mV
Pack temp delta
3.1 °C
BMS fault codes
None stored
Illustrative figures. An AAC certificate records available test-time readings or estimates and its own verification number.
A dated certificate records the battery assessment.
The certificate carries its own number and a public verification link. Anyone you send it to, including the person who buys the car from you in three years, can open that link and confirm the result came from us, on the date we tested it.
- Identifies the result source and assessment date
- Any model forecast is separate in the inspection report
- AAC verification link; manufacturer documents remain separate
- Named inspector on every certificate
Founder
Aussie Auto Care
Every day, I speak with people buying a car they'll rely on for years to come. Some are parents searching for their teenager's first car, some are buying a safe family vehicle, and others have spent years saving for the right one.
I know how important this decision is, and I never take your trust for granted.
I've seen the disappointment of discovering hidden problems after buying a car. That's why we don't just inspect vehicles, we help protect people from making an expensive mistake. Every inspection is carried out as if we were helping our own family.
If I wouldn't recommend a car to someone I love, I won't recommend it to you.
And if we rate the first car Avoid, we'll give you 15% off your next Comprehensive or Elite inspection because I don't want the cost of another inspection to stop you from finding the right car.
Your trust means everything to my team and me. We'll be honoured to help you make this important purchase with confidence.
Founder
Aussie Auto Care
Customer testimonials
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Everything buyers ask about EV batteries.
No. The EV/Hybrid Battery Test is a $199 add-on and isn't included in any package. Choose any package and add the battery test at checkout.
State of Health expresses current battery capacity relative to its when-new capacity. Diagnostic methods may read a BMS estimate or calculate an estimate from available vehicle data. Range also depends on driving, temperature and consumption; SoH alone does not establish the distance a car will travel.
We test battery-electric vehicles from mainstream brands sold in Australia, Tesla, BYD, MG, Polestar, Hyundai, Kia, Nissan, Volvo, BMW, Mercedes-Benz and others. For hybrid battery tests we work on Toyota and Lexus models only. Coverage depends on the vehicle's diagnostic protocol, so tell us the year, make and model when you book and we'll confirm before your inspection is locked in.
No. The test is read-only, we connect to the vehicle's diagnostic port and read what the battery management system already records. Nothing is written to the car, no software is modified, and no forced discharge is performed.
Battery assessment time depends on diagnostic coverage, setup and vehicle access, in addition to your chosen inspection. AVILOO lists a three-minute FLASH device runtime; that is not the duration of the complete on-site visit. We confirm access requirements when arranging the inspection.
A battery projection uses a recorded health value and modelling assumptions. Any projection appears separately in the inspection report, with its saved horizon; it is not part of the dated battery certificate or a guarantee of future performance.
Yes. We inspect at private addresses and at dealerships across Sydney. We ask the dealer for the same access we ask a private seller for: keys, the diagnostic port and enough time to complete the inspection properly.
The report records the supported battery findings, available fault codes and cell data, plus the inspector's recommendation. These can inform a purchase or negotiation, but do not guarantee a discount or predict a future failure.
An Aussie Auto Care battery certificate can be checked through its verification link. It records the result at the test date, not current condition years later. A manufacturer-issued AVILOO document is a separate document; any forecast belongs in the inspection report.
Buying a used Tesla? See our Tesla pre-purchase inspection · Buying a Sportage Hybrid? Read our Kia Sportage buyer's guide · Buying an Outlander PHEV? Read our Mitsubishi Outlander PHEV buyer's guide · Buying an MG4, ZS EV or HS PHEV? See our MG pre-purchase inspection
Don't buy the range on the dashboard. Get the battery assessed.
Book an EV inspection anywhere in Sydney and get the State of Health, the cell data and any diagnostic limitations before making your purchase decision.
EV battery test — $199 on any inspection
SoH estimate, cell data and a 5-year forecast