Battery Health Blog
Research, guides, and data on Tesla and EV battery performance.
How Much Does a Tesla Battery Replacement Cost? (2026)
Out-of-warranty Tesla battery replacement typically runs £8,000–£15,000 ($10,000–$20,000) depending on the model — but it's rarely necessary. What actually drives the cost, and how to check before you assume the worst.
Read articleHow Accurate Is Your Tesla's Range Estimate?
Rated range, projected range, and the number you actually get are three different figures. Here's why your Tesla's display doesn't always match reality — and how to read it correctly.
Read articleThe 80% Charging Rule: When It Matters for Your Tesla (and When It Doesn't)
Charge to 80%, they say — but that advice is chemistry-specific. For LFP-equipped Teslas, it's actually the wrong habit. Here's when the 80% rule applies, and when Tesla's own guidance says to ignore it.
Read articleModel 3 vs Model Y: Which Battery Lasts Longer?
The Model 3 and Model Y share a platform, chemistry, and — in most trims — an identical battery pack. Here's what actually differs between them, grounded in real spec data, and what doesn't.
Read articleHow to Make a Tesla Warranty Claim: A Complete Step-by-Step Guide
Walk through the entire Tesla warranty claim process step by step — from checking your coverage and documenting the issue to attending your service appointment, with specific guidance for US, UK, and EU owners.
Read articleHow to Own a Tesla Without a Driveway
No driveway doesn't mean no Tesla. Around a third of UK households don't have off-street parking, and thousands of them already drive electric. Here's what you actually need to know.
Read articleCold Weather and Tesla Range Loss: What's Normal and What's Not
How much range does a Tesla lose in winter? Data-backed guide covering expected losses by temperature, LFP vs NCA differences, why it happens, and 9 ways to maximise your cold-weather range.
Read articleLFP vs NCA vs NMC: How Battery Chemistry Affects Your Tesla
Tesla uses three battery chemistries — LFP, NCA, and NMC. Here's how each one affects charging habits, degradation, range, and cold weather performance.
Read articleHow to Check Battery Health on a Used Tesla Before Buying
The complete buyer's checklist for evaluating a used Tesla's battery. What to check, what's normal, and red flags to watch for.
Read articleTesla Battery Warranty Explained: What's Actually Covered
Tesla's battery warranty decoded — coverage by model, the 70% threshold, how to make a claim, and what's not included.
Read articleHow to Slow Down Tesla Battery Degradation: 7 Proven Tips
7 practical, science-backed tips to extend your Tesla battery's life. From charging habits to climate control, here's what actually works.
Read articleDoes Supercharging Damage Your Tesla Battery?
The truth about Supercharging and battery health. Real-world data on how frequent fast charging affects Tesla battery degradation.
Read articleTesla Model 3 Battery Health: What to Expect Over Time
Real-world Model 3 battery degradation data by mileage and year. Covers Standard Range (LFP), Long Range, and Performance variants.
Read articleWhat Is Battery Degradation and Why Does It Happen?
Battery degradation explained in plain English. Learn what causes Tesla batteries to lose capacity, what the degradation curve looks like, and what's normal.
Read articleHow to Check Your Tesla Battery Health: 3 Methods Explained
Learn three proven methods to check your Tesla's battery health — from quick energy screen calculations to Tesla's built-in diagnostic. Free calculator included.
Read articleEV Batteries Last Longer Than Expected, Study of 8,000 Vehicles Reveals
A new study analysing 8,000 electric vehicles from 36 brands found average battery health of 95% — far exceeding industry fears. Here's what the data means for Tesla owners.
Read article25 Tesla Software Shortcuts Most Owners Don't Know About
From tapping the speed limit sign to set Autopilot in one touch, to turning off climate with a long press — these shortcuts save time every single drive.
Read articleThe Complete Guide to Tesla Voice Commands (2025)
Every Tesla voice command worth knowing — from climate shortcuts and navigation to bug reports, Easter eggs, and what the new Grok AI can do that traditional voice can't.
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