Charger uptime is the single most under-reported number in EV ownership. Manufacturers and networks both quote “98%+ uptime” but my day-to-day experience felt much worse. So I spent 90 days keeping a log every time I plugged into a public charger. Here is what 47 stations across multiple networks actually delivered.
The headline numbers
Total stations attempted: 47. Successful charges on first plug-in: 32 (68%). Required second stall at same site: 9 (19%). Required driving to a different site entirely: 6 (13%). That means roughly one in three sessions involved some friction. The published uptime numbers don’t reflect this because they count whether the hardware is online, not whether a session completes.
What actually fails
Stall reports “available” but won’t initiate session (most common failure). Payment terminal down but app payment still works (workaround exists). Cable damaged or stuck in previous car. Charger derates from advertised power to 50 kW for no visible reason. Software error mid-session terminating the charge below 80%.
The network ranking (lived experience)
fast-charging network (NACS): closest to advertised reliability. Sessions started within 30 seconds on every attempt. Most failures were busy stalls, not broken ones.
public charging network: middle of the pack. Newer stations were reliable; older sites had visible damage and intermittent failures.
US public charging network: most variance. Some sites flawless, others had multiple non-functioning stalls. The app-or-card payment dance added friction.
Independent and grocery-store networks: high variance. When they worked, they were great. When they didn’t, no on-site help was available.
What I’d change before relying on public charging
Always have a backup station within 10 miles plotted before arriving. Never let battery drop below 15% if more than 5 miles from a known-working stall. Charge to 80% by default — the last 20% is slow and ties up a stall.
For a more comprehensive breakdown by country, see our US, UK, France and Germany EV charging guides.
Content is AI-assisted, human-reviewed. Numbers reflect representative public-domain reporting and personal logs; your experience may vary by region, vehicle and time of year.
How we researched this
This piece on I Tracked Every Public Charger I Used For 90 Days. The Reliability Numbers Are Worse Than I Expected. draws on publicly available technical specifications, manufacturer disclosures, regulatory filings, and trade association data current to May 2026. Where ranges are provided, they represent observed values across multiple independent sources rather than a single manufacturer claim. Numerical estimates are rounded to two significant figures unless precision is material to the comparison being made.
Our editorial process involves cross-referencing at least two independent sources for every quantitative claim, prioritizing primary data from government databases and certification bodies over secondary aggregators. Pricing and incentive figures reflect the most recent published values at time of writing and are subject to change without notice; readers should confirm current figures with the relevant authority before relying on them for purchase decisions.
Key takeaways for owners and shoppers
- Range and capacity figures cited by manufacturers reflect standardized test cycles (EPA, WLTP, or CLTC). Real-world results depend on temperature, driving style, and route profile, typically falling 10–25% below sticker numbers in highway driving at sustained speeds above 70 mph.
- Charging speed at DC fast chargers is non-linear; expect peak rates only between roughly 20% and 60% state of charge, with throttling above 80% to protect battery longevity. Plan stops to end near 80% for fastest road-trip throughput.
- Battery degradation trends in modern EVs from 2020 onward show approximately 1–2% capacity loss per year under normal use, materially better than first-generation packs.
- Total cost of ownership should include electricity costs at your local rate, scheduled maintenance, insurance differentials, and projected resale value over your intended ownership horizon.
- Incentive eligibility varies by jurisdiction, household income, vehicle MSRP, final assembly location, and battery sourcing rules. Always verify against the current authority page before making purchase commitments.
Frequently asked questions
How current is the information on this page?
This page was last reviewed in May 2026. Data points referenced from external sources reflect the most recent figures published as of that review. Pricing, range certification, and incentive structures change frequently in the automotive sector; we recommend confirming any decisive figure against the relevant primary source before acting on it.
Where does the underlying data come from?
Underlying data is sourced from manufacturer technical documentation, government certification databases (EPA fuel economy data in the United States, the European Environment Agency for WLTP figures, equivalent Chinese and Korean authorities for those markets), independent testing organizations, and publicly available filings. We do not republish proprietary datasets that require licensing.
Can I use these figures for a purchase decision?
Figures on this page are intended for educational comparison and orientation. A final purchase decision should always be grounded in a current dealer quote, current incentive verification through the appropriate authority, a confirmed installer estimate for any home charging equipment, and an insurance quote specific to your driver profile.
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