Tesla Battery Health & Degradation Tracker
See your Tesla's estimated pack capacity and degradation, built from your own charge history — with an honest baseline-building state when there isn't enough data yet. Free during Amped's beta.
Built from your own charges, not a guess
Capacity is estimated from charge-session deltas — sessions with at least a 20% state-of-charge swing, on AC, adding more than 1 kWh. Every qualifying charge tightens the estimate.
Degradation against a real baseline
Your estimated capacity is compared to a baseline — either your rated pack capacity or a measured baseline once enough charges have been recorded — so the degradation percentage means something.
A trend, not a single number
Monthly capacity medians plot over time on a capacity chart, so a dip or a plateau is visible as it happens rather than buried in one headline stat.
When there is not enough data yet
New cars and new packs start in a baseline-building state that says exactly how many qualifying charges are still needed — never a fabricated estimate or confidence score.
Export what you see
Download the monthly capacity samples as CSV whenever you want your own copy of the numbers.
FAQ
How does Amped estimate my Tesla's battery capacity?
From charge-session deltas — sessions with at least a 20% state-of-charge swing, charged on AC, adding more than 1 kWh. It takes three or more qualifying charges before an estimate appears.
What is the degradation percentage measured against?
Your estimated capacity compared to a baseline — your car's rated pack capacity, or a measured baseline once enough charges have accumulated. The baseline source is always shown alongside the number.
What if I haven't charged enough yet?
Amped shows a baseline-building state and the exact count of qualifying charges recorded so far, instead of inventing a capacity or confidence figure before there is real data behind it.