Which Level 2 EV Charger Should You Buy? A Marin Electrician’s Take

No — that’s the most common mistake. A charger can only deliver as much as your car’s onboard charger accepts, and many EVs cap out below the highest charger ratings, so extra amperage is wasted money. It also has to fit your panel: a higher-amperage charger needs a bigger circuit and more spare capacity, which an older service may not have. The right move is to match the charger to the lower of your car’s limit and your panel’s capacity, which usually lands well below the maximum on the shelf.

Both are safe and code-legal when installed correctly, so it comes down to fit. A plug-in charger on a 240-volt outlet is flexible — easy to swap, replace, or take with you — and is fine for most indoor garages. A hardwired unit is cleaner-looking, supports higher continuous output, and is often the better or required choice for outdoor installations. Location tends to decide it: indoors, either works; outdoors or at higher amperage, hardwired is usually the call. Your electrician can recommend based on your setup.

Only if you’ll use the smart features. The genuinely useful one is scheduling: setting the charger to run during off-peak, lower-cost utility hours can meaningfully reduce what you spend charging, and usage monitoring appeals to some owners. But if your routine is simply to plug in overnight and go, a basic charger does exactly that for less money. Don’t pay for Wi-Fi and apps you won’t open — buy smart if it matches how you’ll actually charge, and buy simple if it doesn’t.

For safety and reliability, yes — stick with a safety-certified unit from a reputable manufacturer. A charger delivers significant current for hours at a time, so build quality and proper certification matter, and an off-brand bargain unit is not where to cut corners. Beyond that, brands differ in features, warranty, and app quality more than in basic charging performance. Choose a certified, well-reviewed charger that fits your amperage and features needs, and you’ll be in good shape regardless of which reputable name is on it.

Nearly all Level 2 home chargers use a standard connector compatible with most EVs sold in North America, and adapters cover the exceptions — so compatibility is rarely the issue. What matters more is matching the charger’s amperage to your car’s charging capability and your panel. Some automakers offer their own branded chargers, which are fine, but you’re not locked into them. Confirm the connector matches your vehicle (or that an adapter is available), then focus on sizing and features rather than worrying about basic compatibility.

Yes — ideally before you buy, not after. The charger’s amperage determines the circuit size it needs, and whether your panel can supply that circuit comes down to its spare capacity, which a load calculation confirms. Buying a charger only to discover your panel can’t support it means either a smaller charger, a load-management device, or a panel upgrade. Having an electrician check your panel first lets you buy the right-sized charger with confidence, rather than guessing and potentially returning an oversized unit.