Tesla Pre-Purchase Inspection: Battery Health in Florida
To check a used Tesla's battery health before buying, have a Tesla-specialized technician run a battery state-of-health diagnostic and an EV module scan, plus a flood and corrosion check. Treat one percentage as a snapshot. Charging habits, heat and, in South Florida, possible saltwater flood exposure matter just as much, and you can verify all of it before you fly.
A battery percentage is a snapshot, not a verdict. Pair it with a module scan and a flood and corrosion check, done by someone at the car, before you book a flight.
How do I check Tesla battery health before buying?
Start with the number, then question it. Ask the seller for the car's battery state of health, its age and mileage, and how it was charged. A percentage on the screen is only the beginning when you cannot see the car in person.
Geotab's January 2026 analysis found average EV battery degradation of 2.3% per year, so some loss is normal. What you want to know is whether this car is losing more than its age and use would suggest.
- Ask for the battery state-of-health reading and a photo of it.
- Ask how often the car used DC fast charging versus home charging.
- Ask whether the pack sat nearly full or nearly empty for long periods.
- Ask where the car has lived, and whether it was ever near floodwater.
- Have a technician at the car confirm the reading with their own diagnostic.
How accurate is a battery health test?
A battery health test is a useful snapshot, but it reflects one moment and one method. It cannot tell you how the car got there or whether something else is wrong with the pack.
Geotab's data shows why history matters. Vehicles relying on high-power DC fast charging above 100 kW see degradation of up to 3.0% per year, roughly double vehicles that mostly charge at lower power. Degradation also accelerates when vehicles spend more than 80% of their time at very high or very low states of charge. A single reading can't show either habit, so combine it with a module scan and the seller's answers.
Is 92% battery health good?
It can be, but it depends on age, mileage and charging history. With average degradation at 2.3% per year, a 92% reading on a car a few years old is in a normal range. On a very new, low-mileage car it may be worth a question.
Heat matters a little. Geotab found EVs in hot climates degrade around 0.4% faster per year than those in mild conditions, though charging power has a greater overall impact. South Florida is hot, so expect a bit more wear, and judge the figure against how the car was charged.
Can a flooded EV battery be safe?
Do not assume so. NHTSA says the batteries in hybrid and electric vehicles are highly corrosive and should not be exposed to standing water, and that flooded vehicles may have high voltage and short circuits that can shock and cause fires.
Saltwater makes it worse. CTIF, the international fire-services association, reported that after Hurricane Helene fires can occur days or even weeks after exposure. It also cited NHTSA figures that Hurricane Ian in 2022 damaged between 3,000 and 5,000 EVs in Florida, with 600 deemed a total loss. Insurer Nationwide explains the mechanism: short circuiting, corrosion and overheating can lead to thermal runaway.
AAA advises that electric and hybrid vehicles exposed to flooding should not be driven or charged until a certified technician has inspected them. It also warns not to start a vehicle if floodwater rose above the door opening, so a seller who started a flooded car may have caused more damage. For general signs, see our South Florida flood car checklist.
What does a used EV inspection include?
A good used EV inspection goes well beyond a test drive. The goal is to answer, from a written report, the questions you cannot answer from another state.
| Your worry | Inspection step |
|---|---|
| Is the battery worn? | Battery state-of-health diagnostic |
| Hidden faults? | EV module scan for stored faults |
| Was it in a flood? | Flood, rust and undercarriage check |
| Hidden crash repair? | Paint-depth readings, panel gaps, frame measurement |
| Cleared warning lights? | Full OBD-II scan, including codes cleared in roughly the last 30 days |
| Can I trust the seller's story? | Photo evidence and a written report with a plain-English verdict |
How a pre-purchase inspection catches this
Inspect First sends a Master Certified Technician who specializes in the make, an EV specialist for a Tesla, to the car, wherever it sits in Miami, Fort Lauderdale, Palm Beach, Boca Raton or Wellington. See our Tesla pre-purchase inspection page for details.
The EV inspection covers a battery state-of-health diagnostic, an EV module scan, and a flood, rust and undercarriage check, plus paint-depth readings on every panel and photo evidence. Anthony Lapadula, the Owner / Operator, then walks you through the findings by phone, and you receive a written report with a plain-English verdict before you book a flight. EV inspections are priced by quote. A history report alone won't show saltwater exposure in every case.
What should I do before flying to see the car?
Get the inspection first, then decide whether the trip is worth it. NHTSA's advice for a suspected battery problem is to contact the dealer, and the same logic applies here: a specialist should check a suspect pack rather than relying on a seller's word.
- Ask for the VIN and the car's location history.
- Book the inspection at the car before buying a ticket.
- Read the report and the verdict, then call to ask questions.
- Walk away if the seller refuses an independent inspection.
Call or text 561-350-9389 or book an inspection. Hablamos Español.
Frequently asked questions
- How much does a Tesla pre-purchase inspection cost in Florida?
- EV inspections are priced by quote. Inspect First's Standard inspection is $299 and Premium / Luxury is $399, but EV work adds a battery state-of-health diagnostic and EV module scan. Call or text 561-350-9389 for a quote. See inspection costs.
- What is normal battery degradation for a used EV?
- Geotab's 2026 analysis puts average EV battery degradation at 2.3% per year. Heavy DC fast charging above 100 kW can reach up to 3.0% per year, and hot climates add about 0.4% a year.
- Can a Tesla be inspected before I fly to Florida?
- Yes. Inspect First sends a Tesla-specialized technician to the car in Miami, Fort Lauderdale, Palm Beach, Boca Raton or Wellington. Appointments are typically within 24-48 hours, and you get a written report before booking a flight.
- Will a Carfax show flood damage on a used Tesla?
- Not always. A history report may not show saltwater flood exposure to the high-voltage pack. An in-person flood and corrosion check, plus a module scan, fills the gap. See inspection vs Carfax.
- Is it safe to charge a Tesla that may have been flooded?
- No. AAA advises that electric and hybrid vehicles exposed to flooding should not be driven or charged until a certified technician has inspected them. Saltwater fires can occur days or even weeks after exposure.
Sources
- New Geotab data shows EV battery health remains strong as fast charging use increases, Geotab, 2026-01-13
- Hurricane- and Flood-Damaged Vehicles, NHTSA, 2026
- AAA urges Floridians to document storm damage, avoid scams following Hurricane Isaias, WEAR/CBS12 (AAA guidance), 2026-10-10
- 11 electric cars and 48 lithium batteries caught fire after exposure to salty flood water in Hurricane Helene, CTIF (International Association of Fire Services), 2024-10
- Proper Handling of Electric Vehicles After Flooding or Hurricanes, Nationwide, 2025
Anthony Lapadula, Owner / Operator of Inspect First. He dispatches a Master Certified Technician who specializes in your car's make, then walks you through the findings by phone, in English or Spanish. 561-350-9389
Before you sign, let a Master Certified Technician check it. We come to the car.