Tesla's LFP Model 3 Wants 100% Charges. Polestar's Pack Prefers Staying at 10-80%. Here's Why.

If you're cross-shopping a Tesla Model 3 and a Polestar 2 in Australia, you're looking at the only two brands EV TrustSeal can currently certify here, which makes this comparison more directly useful than most. But the number that actually matters long-term isn't on either spec sheet: it's how each car's specific battery chemistry ages, and the two take genuinely different approaches.

The warranty terms are close enough not to decide this for you

Start with what each manufacturer guarantees, since it's the closest thing to an apples-to-apples number either company offers.

Tesla backs the Model 3 for 8 years, with the mileage cap depending on trim, 100,000 miles on Standard Range, 120,000 on Long Range and Performance, with a 70% capacity floor. Polestar backs the 2 for 8 years or 100,000 miles (160,000 km), also with a 70% floor. Functionally, these are the same promise. Neither warranty term should be the deciding factor between these two cars.

What should matter more is what each battery actually does over that time, and that's where a real difference shows up.

The chemistry split that changes how you should charge either car

Here's the detail most comparisons skip entirely, and it's the one that actually affects day-to-day ownership.

Many current Model 3 RWD variants use LFP (lithium iron phosphate) chemistry, which tolerates regular charging to 100% with comparatively little long-term stress. Tesla actively recommends charging LFP-equipped Model 3s to 100% regularly, it's part of how the battery management system calibrates itself accurately.

The Polestar 2 uses NMC-type cells across its lineup, which behave differently. These cells generally prefer staying within roughly a 10% to 80% charging range for long-term health, and habitually charging to 100% or running down near empty adds more stress over time than it would on the Tesla's LFP pack.

In plain terms: the car that wants you to charge it full regularly and the car that doesn't are opposite to what many buyers assume, since Tesla's broader lineup (Long Range and Performance trims) actually uses nickel-based chemistry closer to Polestar's, while it's specifically the RWD Model 3 that flips the advice. Know which variant you're looking at before assuming either charging habit applies.

What the real-world numbers show

Independent testing on the Model 3 (drawing on the Carla dataset) breaks down retention by specific pack at around 62,000 miles: the CATL LFP pack in RWD models averaged 93.3%, the LG cylindrical pack in Long Range and Performance trims averaged 91.5%, with older Panasonic-equipped early builds somewhat lower, around 88-90%.

On the Polestar 2, real-world data points cluster in a comparable range at higher mileage: one well-documented case study showed 88.8% state of health at 100,000 miles, and aggregated fleet estimates suggest roughly 2% annual capacity loss, putting a typical Polestar 2 around 90-92% at the same mileage point.

Read carefully, these numbers are closer to each other than the chemistry difference might suggest, both cars generally hold up well. The chemistry difference is less about which one "wins" and more about which charging habits actually suit the specific car you're looking at.

What this means if you're choosing between them in Australia

Since both brands are within EV TrustSeal's actual Australian coverage, either choice is one you can get independently verified without hardware or a workshop visit, which isn't true of most other EVs sold here.

If you're looking at an RWD Model 3, ask whether the owner has been charging it to 100% regularly, that's actually the healthy pattern for that specific pack, and irregular charging habits (always stopping at 50-60%) can be a mild negative sign rather than a positive one on this particular variant.

If you're looking at a Polestar 2, or a Long Range or Performance Model 3, ask the opposite question: has this car spent a lot of time sitting at 100% or being run down near empty? That's the pattern more likely to accelerate wear on nickel-based cells.

Either way, the charging history someone tells you about is not something you can verify from a spec sheet or a dashboard. The actual measured condition of that specific battery is.

Get the specific number, not the average

EV TrustSeal audits both Tesla and Polestar vehicles in Australia, no dongle, no workshop visit. Connect the car's manufacturer account, drive and charge normally, and receive a graded, VIN-locked certificate accurate to within 3% within hours, verifiable independently by a buyer. For the full picture on each model, see used Tesla Model 3 battery health and Polestar battery health.

Frequently Asked Questions

Should I charge my Model 3 to 100%?

If it's an RWD model with an LFP pack, yes, regularly charging to 100% is recommended and helps the battery management system calibrate accurately. If it's a Long Range or Performance model with a nickel-based pack, staying mostly within a lower daily range and reserving 100% charges for longer trips is generally better for long-term health.

Should I charge my Polestar 2 to 100%?

Not as a daily habit. The Polestar 2's NMC-type cells generally prefer staying within roughly 10% to 80% for everyday charging, saving 100% charges for trips where you need the extra range.

Is the Tesla Model 3 or Polestar 2 battery more reliable?

Both hold up reasonably well based on available real-world data, with retention figures in a broadly similar range at comparable mileage. Which specific pack variant is under the car you're looking at matters more than the brand badge.

Can I get either car's battery independently checked in Australia?

Yes. Tesla and Polestar are currently the only two brands EV TrustSeal covers in Australia, so both a Model 3 and a Polestar 2 can be audited from home with no hardware required.

Same warranty promise, different charging habits

The badge on the back of either car tells you less than the specific pack and the specific charging history. Get the number that actually matters before you buy, or before you rely on a seller's assumption about which one is "the good battery."

If you're choosing between a used Model 3 and a Polestar 2 in Australia, get the specific car's number rather than the brand's reputation. Connect your car free at evtrustseal.com.