How we rank (and what we don't do)
Everyone in this category says they tested twenty chargers in a lab. We haven't tested any — and we say so. Here is exactly what we do instead, so you can check it.
The honest part, first
We do not run a test lab, own the chargers we compare, or measure them on a bench. Sponsored placements: zero. Free units accepted: zero. Chargers we claim to have tested: zero. We lead with that because the alternative — implying hands-on testing we didn’t do — is the exact thing that makes buying guides untrustworthy. What we bring instead is a method anyone can reproduce with the manufacturer’s own numbers.
What we actually do
Every pick is scored on transparent, checkable inputs:
- Published specs.Maximum amps and kW, connector type (J1772 / NACS / CCS), cable length, indoor/outdoor (NEMA) rating and warranty — read from the manufacturer’s own listing and dated on the product card. Where a brand doesn’t publish a figure, we print “Not published” rather than guess.
- Electrical-load math.The circuit and breaker a charger needs, using the 80% continuous-load rule (a 40A charger needs a 50A circuit; a 48A charger needs a 60A circuit). This is what stops you buying a charger your panel can’t feed.
- Cost-to-run math.Cost per full charge, per mile and per month at a stated electricity rate, and cost versus gasoline — computed with the formula and rate source shown, not asserted. Our cost calculator lets you run it on your own rate.
- Real-world signal, attributed.Where we reference owner- reported reliability or a third-party lab result, we attribute it to that source — we never relabel someone else’s testing as our own.
- Value.The live price weighed against all of the above. Buyer-first: if a cheaper unit does the same job, it’s our pick, and we say when to skip the pricier one.
How picks and rankings are chosen
Rankings are editorial and argued in prose — we don’t attach a fabricated numeric “score,” because a score would dress spec-reading up as testing we didn’t do. Order reflects which charger best fits the most buyers, with distinct “best for” labels so a 40A value pick and a 48A performance pick both have a home. Commission never changes the order.
Prices, and why they might say “Check price”
Prices come only from a live retailer data layer and carry the date they were pulled. If the daily refresh hasn’t run within 48 hours, the number disappears and the page shows “Check price on Amazon” — we would rather show nothing than a stale figure. We never display an invented or remembered price.
How often we update
Prices refresh daily. We re-verify picks, specs and links roughly every 90 days, refresh cost math when electricity or gas prices move materially, and update connector and install guidance when standards shift (the NACS transition being the big one right now). If you spot an error, the contact form goes straight to us.
Sources
- U.S. DOE Alternative Fuels Data Center — Charging Electric Vehicles at Home — DOE guidance on Level 1 vs Level 2 home charging, 120V/240V service and installation (accessed July 19, 2026)
- U.S. DOE Alternative Fuels Data Center — Electric Vehicle Charging Stations — DOE overview of charging levels, power output and connector types (J1772, CCS, NACS) (accessed July 19, 2026)
- EPA ENERGY STAR — Electric Vehicle Chargers — ENERGY STAR on certified EV chargers, safety certification and standby energy use (accessed July 19, 2026)
- U.S. EIA — Electric Power Monthly, Average Retail Price of Electricity (Table 5.3) — EIA average retail residential electricity price by month, in cents per kWh (accessed July 19, 2026)
- SAE International — J3400 North American Charging System (NACS) for Electric Vehicles — The SAE standard for the NACS connector (Tesla's plug), alongside the J1772 AC standard (accessed July 19, 2026)