How to choose a portable charger
Decide whether you want a primary charger that travels, or a backup for the trunk. The Lectron 40A, EVDANCE 40A and TLE LEVEL 40A are true Level 2 units — on a NEMA 14-50 outlet they add roughly 30 miles of range per hour, the same as a wall charger, and any of them can be your daily home charger if you have a 14-50 outlet in the garage. The EVDANCE 16A dual-level and the TopAutoGear are 16A units: cheap, light, and the right thing to keep in the trunk for the day you arrive somewhere with a low battery and no station — but slow by design, and slower still on a 120V socket.
Level 1, Level 2, and the units that do both
The category label hides three genuinely different products, and the listings rarely make the distinction for you.
- Level 1 only. A 120V cord, typically 12–15A. Adds roughly 3–5 miles of range per hour. This is the cord that came with the car. Buying a second one only makes sense as a spare for a second home or a trunk you never unload — our Level 1 roundup covers those honestly, including how slow they really are.
- Dual-level 16A. Ships with both a 120V and a 240V plug, so one cord covers a household socket and a dryer-style outlet. On 240V a 16A unit delivers about 3.8 kW — roughly 12 miles of range per hour. Not fast, but three to four times a wall socket, and it fits outlets a 40A unit cannot use. The EVDANCE 16A and TopAutoGear are both this type.
- True 40A Level 2. 9.6 kW on a NEMA 14-50, which is the same power a fixed 40A wall charger delivers. This is the only class that genuinely replaces a home charger. The Lectron, EVDANCE 40A and TLE LEVEL picks above are all in it.
If you are choosing between classes rather than brands, the question is not which is best — it is which outlet you will actually be standing in front of most often.
Amperage only matters if the outlet can feed it
A portable never delivers more than the circuit behind the socket allows, and the 80% continuous-load rule applies to a cord exactly as it does to a wall unit. In round numbers, for a 240V outlet:
- NEMA 14-50 on a 50A circuit — 40A, about 9.6 kW. The full-speed case, common at RV parks and in newer garages.
- NEMA 14-30 or 10-30 dryer outlet on a 30A circuit — 24A maximum, about 5.8 kW. You must dial the charger down yourself; the adapter will not do it for you.
- NEMA 6-20 on a 20A circuit — 16A, about 3.8 kW. This is the ceiling the dual-level units are built for.
- Standard 5-15 household socket — 12A at 120V, about 1.4 kW, whatever the charger is rated for.
That last line is the one that surprises people: plugging a 40A charger into a household socket does not make it fast. Our amps and circuits guide shows the arithmetic, and the NEMA outlet guide explains what the numbers on the socket mean.
Plugs and adapters
The best portables ship with, or accept, multiple plug adapters, so one charger covers a dryer outlet, an RV pedestal and a standard wall socket. Adjustable amperage is a genuine bonus: it lets you dial the charger down for a weaker circuit so you don’t trip a breaker at an unfamiliar outlet.
The rule you must not break: a plug adapter changes the shape of the plug, not the circuit behind it. Put a 40A charger on a 30A dryer outlet through an adapter and you have to set the charger to 24A manually. The outlet will not stop you and the breaker may take a while to object. Our NEMA adapter guide covers which adapters are worth carrying.
Cable length is the spec people regret
Reach is the difference between parking where you like and parking where the cord reaches. Among the picks here the published figures are 25 ft on the EVDANCE 40A, the TLE LEVEL and the EVDANCE 16A, 21 ft on the Lectron and 17 ft on the TopAutoGear. Away from home that gap matters more than at home, because you do not get to choose where the socket is. Measure the run you actually need before you optimize for amperage.
What these listings publish — and what they don’t
This is a category where the paperwork thins out fast at the budget end, and we would rather say so than paper over it. The Lectron publishes an IP66 connector and a 1-year warranty; the EVDANCE 40A publishes an IP67 connector and a 1-year warranty; the TopAutoGear publishes IP54 and an unusually long 5-year warranty. The TLE LEVEL and the EVDANCE 16A publish neither an enclosure rating nor a warranty term, which is exactly why they are cheaper — the spec table on this page prints “Not published” rather than a guess. Check the certification mark on the listing photographs before you order; our certification guide explains what UL 2594 and ETL actually cover and how to verify a claim.
The honest limit
No portable beats the outlet it’s plugged into. On a standard 120V socket, even a capable Level 2 unit falls back to Level 1 speed — that’s the physics of the outlet, not a flaw in the charger. If you want real speed at home, plan for a NEMA 14-50 outlet (see our outlet guide), and read our amps and circuits guide to size it.
What we’d skip
Skip a Level 1-only portable if you actually need to add meaningful range overnight — a few miles per hour won’t keep up with normal driving. And skip any “fast portable” that’s vague about its amperage or plug type; those two specs are the entire product.
Which of the five is for you
Buy the Lectron 40A if this is going to be your actual home charger as well as your travel one. It is the most completely specified unit here — a published IP66 connector and a stated warranty at a real 40A — and the 21 ft cable is the only thing we would check against your garage first. The full review goes deeper.
Buy the EVDANCE 40A if you want the same capability with more reach. It publishes an IP67 connector — the highest ingress rating in this group — and 25 ft of cable, for less than the Lectron. It is the pick we would hand most people who are buying one charger to do everything; the review covers the trade-offs.
Buy the TLE LEVEL 40A if you want genuine 40A capability for the least money and you are willing to accept a thinner spec sheet to get it. It publishes 40A and a 25 ft cable and does not publish an enclosure rating or a warranty term, and our review is explicit about what that means. Treat it as an indoor-and-garage unit.
Buy the EVDANCE 16A dual-level if you genuinely do not know what outlet you will find. It carries both a household and a 240V plug with 25 ft of cable, which is the most adaptable configuration here even though it is not the fastest. For PHEVs, whose onboard chargers often cannot exceed this rate anyway, it is arguably the right buy outright — see our plug-in hybrid guide.
Buy the TopAutoGear if you want the cheapest credible thing to forget about in the trunk. It is 16A and 17 ft, which is the least of everything here, but it publishes IP54 and a 5-year warranty — the longest on this page by a wide margin — and an emergency charger you never use is a warranty product more than a performance one.
Portables as a permanent home charger
A 40A portable on a NEMA 14-50 delivers the same 9.6 kW as a fixed 40A wall unit, costs less, needs no hardwiring, and comes off the wall when you move. That makes it the default answer for renters and apartment dwellers, and a legitimate answer for owners too.
What you give up is real but narrow: no permanent mount or holster, usually no app or scheduling, and a plug-and-receptacle connection rather than a hardwired one. That last point matters more than the others. The receptacle is the part of a plug-in install that fails — ordinary 14-50 outlets are built for the intermittent loads of ranges and RVs, not a 40A draw held for eight hours a night. If a portable is going to be your everyday charger, put it on an industrial-grade receptacle from our NEMA 14-50 outlet roundup, and read plug-in versus hardwired before you decide. If you would rather have the wall unit after all, our home charger roundup is the page for that.
One portable is built specifically for that everyday-charger role rather than for the trunk, and it is the one to read about if this section describes your plan: the Grizzl-E Mini Connect 40Ais a cast-aluminum Type 4 unit that dials from 7A to 40A and ships with four plug adapters. It costs more than everything above — more than most fixed wall chargers, in fact — and our review is specific about which of its published figures do not agree with each other.
