How we judge chargers, brands, installers, and product claims

What goes into a guide

We use manufacturer documentation and install manuals, published specifications, NEC and utility guidance, and a large amount of buyer-friction analysis: what breaks budgets, what fails after the honeymoon, and what owners regret after the first month of living with a charger.

The specs we verify on every charger: maximum amperage and whether it needs hardwiring to reach it, the plug type if it is plug-in (NEMA 14-50 or 6-50), the connector on the cable (J1772 or NACS), whether the unit is UL or ETL listed, cable length, whether it does load management or power-sharing, warranty length and what it actually covers, and how much of the product depends on a cloud app that could go dark. And on every recommendation, the installed range, not just the box price, with the panel-upgrade risk named.

A charger price without the install range next to it is marketing, and we don't print it that way.

Where the buyer's voice comes from

Product pages tell you what a charger should do. Owners tell you what the install actually cost, whether the electrician pushed a panel upgrade, and what broke six months in. We source from owner forums like r/evcharging and r/electricvehicles, car-specific owner communities, YouTube charger-review comments, electrician boards for the install-reality voice, verified purchase reviews, and manufacturer and installer teams we question directly about real installed ranges, lead times, warranty terms, and the biggest mistake their buyers make.

How we use manufacturer replies

If a manufacturer or installer answers our questions, that can improve factual clarity. It can help us verify amperage and connector specs, warranty terms, install lead times, or the failure modes their support team sees most.

It does not improve placement on a roundup page. A reply is evidence. It is not a ranking boost. Access improves accuracy, never ranking.

The weaknesses database

For every charger we cover seriously, we keep a record of sourced, defensible negatives: the issue, the detail, the source, and how severe it is. A pattern of GFCI nuisance trips in owner groups, a warranty claim that took months, a cable that cracked in the cold, or an app that lost features when the company changed hands. Raw scraped signals stay unverified until a human has read the source and confirmed the pattern. One angry post is an anecdote. Five owners with the same firmware failure is a data point.

How verdicts are formed

We judge fit, not prestige. A 48-amp hardwired charger can be excellent and still wrong for someone on a 100-amp panel who would have to pay for a service upgrade to run it, when a 32-amp unit would fill their car by morning and skip the upgrade entirely. The verdict explains where a charger belongs, where it doesn't, and what the buyer gives up either way. It is allowed, and often correct, to recommend the cheaper charger, the lower amperage, or load management over a panel upgrade. It is also allowed to recommend no Level 2 charger at all: for a low-mileage driver, the Level 1 cord that came with the car is sometimes enough, and we say so.

What we never do

We never fabricate ratings, prices, owner quotes, or test results. If we haven't verified a number, we don't print it. Incentive and rebate figures are dated on the page, because they change. If the evidence is thin, the page says so. If we're not sure, we say we're not sure.

How we handle safety

Safety pages are written more conservatively than product pages, because a Level 2 charger is one of the largest continuous electrical loads in a house and, installed wrong, it starts fires. Wire and breaker sizing, GFCI, 14-50 outlet safety, and permitting are treated as life-safety topics: we cite NEC and manufacturer install manuals, we keep those pages free of product links and email capture, and we never soften the answer to keep a page commercially useful. When the safe answer is “hire a licensed electrician” or “pull the permit”, that is the answer we give. We never coach unlicensed 240V wiring.