MyWatt

It comes down to two things: your car's charging port and the outlet you have at home.

• Tesla, or any car with a NACS port (2025+ Hyundai, Kia, Nissan, Rivian and more): go with the 16A or 32A portable NACS charger. It plugs straight into your car.
• Car with a J1772 port (most non-Tesla EVs and plug-in hybrids before 2025): go with the 48A wall charger.

Not sure which port you have? Use the Find your charger tool at the top of this page: pick your car and we show you the charger that plugs right in.

Level 1 uses a regular 120V wall outlet (NEMA 5-15). It's slow: about 3 to 5 miles of range per hour. Fine for a plug-in hybrid or very short commutes, but a full charge can take days.

Level 2 uses a 240V outlet (like a dryer or RV outlet) or a hardwired wall unit. It's 4 to 10 times faster, which means a full battery overnight for most EVs.

All three MyWatt chargers are Level 2. The 32A portable can also do Level 1 with its 5-15 plug, and the 16A comes with a 5-15 adapter, so you can charge from a standard outlet when you're away from home.

On a 240V outlet, here's what to expect (exact numbers depend on your car's efficiency and onboard charger):

Most Americans drive under 40 miles a day. Even the 16A covers that in a single night.

Good to know: your car decides the maximum it can take. If its onboard charger is limited to 7.2 kW, a 48A charger will still charge it at about 7.2 kW.

EV charging is a continuous load, so US electrical code requires the circuit to be rated at least 125% of the charging current:

• 16A charger: NEMA 6-20 outlet on a 20A breaker.
• 32A charger: NEMA 14-50 outlet on a 40A or 50A breaker.
• 48A wall charger: hardwired on a 60A breaker for the full 48A, or plugged into a NEMA 14-50 on a 50A breaker (set to 40A).

Already have a dryer or RV outlet in your garage? You may be good to go. If you need a new 240V circuit, have a licensed electrician install it. It's usually a few hours of work.

No, and this is the most important safety rule. A charger pulls high current for hours. Most extension cords aren't rated for that, so they heat up, melt the plug and can start a fire. Charger makers and electricians all agree on this one.

If your outlet is too far from where you park, our portable chargers come with a long cable (about 20 to 25 ft). If that's still not enough, the right fix is a new outlet closer to your parking spot, installed by an electrician.

Yes, with the right adapter.

• Tesla with the 48A J1772 wall charger: use a J1772-to-Tesla adapter. Many Teslas came with one in the box; otherwise it's an easy accessory to find.
• J1772 car with a NACS portable charger: use a NACS-to-J1772 adapter. Pick one rated for at least the charger's current.

Adapters work well, but a direct fit is always simpler. That's why our Find your charger tool shows you first the charger that plugs right into your car.

For daily driving, most automakers recommend setting a charge limit around 80%. It's easier on the battery over the years. Charge to 100% before a road trip.

Exception: cars with an LFP battery (some Tesla Model 3 and Model Y, for example) are often recommended to charge to 100% regularly. Check your owner's manual or your car's app.

And yes, it's perfectly fine to plug in every night. Your car stops charging by itself when it reaches its limit.

Simple math: kWh used × your electricity rate.

An average EV uses about 0.3 kWh per mile. At a typical US rate of around 17¢ per kWh, that's roughly 5¢ per mile, or about $1.50 to $2 for a 30-mile day. Compare that to $4 to $5 in gas for the same trip.

Save even more: many utilities offer cheaper night rates. Set your charging to start after the off-peak hour (in your car's app or with the charger's delay timer) and let it run while you sleep.

Yes, charging in the rain is safe. The charger doesn't send any power until it's securely connected to your car and has run its safety checks.

Our chargers are rated IP55 to IP65 (depending on the model) against dust and water jets. For a long life:

• Keep the outlet itself protected: an outdoor outlet needs a weatherproof "in-use" cover.
• Hang the cable and plug on a holster instead of leaving them on the ground.
• Don't leave the connector in a puddle or under snow.

• Warranty: every MyWatt charger is covered by a 3-year warranty. If anything goes wrong, contact us and we'll make it right.
• Shipping: 4 to 8 business days anywhere in the US, tracked and insured.
• 30-Day Money-Back: not happy with it? Send it back within 30 days for a full refund.

Questions before you order? Reach out through our contact page. A real person answers.