The range math, and the test that actually settles it
Fifteen amps at 120 volts is about 1.8 kW. At our standard reference of roughly 3.5 miles of range per kWh, that works out to about 6 miles of range per hour. Plug in at 8pm and unplug at 6am and you have added somewhere around 60 miles, before charging losses take their cut.
The instinct is to compare that to a Level 2 charger’s 34 or 40 miles an hour and conclude it is hopeless. That is the wrong comparison. The right one is against how far you drive. The average US driver covers roughly 35 to 40 miles a day. If that describes you, Level 1 refills your daily driving overnight with room to spare, and the charging speed becomes completely invisible — you plug in, you go to bed, the car is full.
So the test is simple, and it is about your life rather than the hardware: take your weekly mileage and divide by seven.If the number is under about 40, Level 1 keeps up. If it is 60 or 80, you will slowly lose ground on weekdays and spend weekends catching up — workable, but you will think about it. If it is over 100, you need Level 2. Our charge-time guide puts these rates against real battery sizes, and our Level 1 vs Level 2 comparison takes the decision apart properly.
Two groups for whom this is not a compromise at all. Plug-in hybrid owners have batteries in the 8 to 18 kWh range — a Level 1 charger fills one of those overnight comfortably, and a Level 2 charger would spend most of the night idle. And second cars that do school runs and errands rarely out-drive 60 miles a night.
Why 15 amps matters
Level 1 chargers are not all the same speed, and the difference is larger in proportional terms than anything in the Level 2 world. The bundled cable that came with many EVs runs at 12 amps; this unit runs at 15. That is a 25% increase in charging rate — roughly 6 miles an hour against 5, or about 12 extra miles across an overnight session.
Fifteen amps is also the ceiling. A standard North American 120V branch circuit is typically rated at 15 or 20 amps, and the NEC’s continuous-load rule limits a 15-amp circuit to 12 amps of continuous draw — so a 15-amp charger is designed for a 20-amp circuit. This is worth understanding before you buy, because it explains the one real-world annoyance below.
The practical consequence: this charger wants an outlet that is not sharing its circuit with much. If the garage outlet is on the same circuit as a freezer, a workshop bench and the outdoor lights, you may trip a breaker. That is not a defect in the charger — it is the circuit telling you it is oversubscribed. If it happens repeatedly, have an electrician look at what is on that circuit rather than simply resetting it.
Build, safety and the rule that is not optional
Lectron publishes an IP65 rating on the control box, which means dust-tight and protected against water jets — more weather resistance than a charger that lives indoors strictly needs, and welcome on a unit that will realistically get left on a garage floor or coiled in a trunk. The cable is 16 feet, which is short by Level 2 standards but reasonable here, since a 120V outlet is usually closer to the car than a purpose-installed 240V one.
The unit is ETL listed to the UL 2594 and UL 2231 standards. That is the same third-party safety bar the expensive chargers clear: UL 2594 covers EV supply equipment, UL 2231 covers personnel protection systems for EV supply circuits. Price is not the safety signal — the mark is. Our guide on whether cheap EV chargers are safe explains how to read these listings and which claimed certifications mean nothing. Lectron publishes over-voltage, over-current and short-circuit protection on the unit; it does not publish a warranty term, which our spec table records as “Not published” rather than guessing.
And the rule: plug it directly into a wall outlet.Never a household extension cord, never a power strip, never a multi-outlet adapter. A Level 1 charger pulls its full rated current for hours at a stretch, which is a duty cycle that ordinary cords are not built for, and each additional connection point is somewhere heat can build. If the outlet is out of reach, the answer is to reposition the car or have an outlet installed — not to bridge the gap with a cord.
What it costs to run
Here is the part people find counterintuitive: charging level does not change the cost of a charge. Electricity is billed in kWh, and putting 40 kWh into a battery costs the same whether it went in at 1.8 kW or 11.5 kW. Level 2 buys you time, not cheaper electricity.
The one caveat is charging losses, which are proportionally slightly higher at Level 1 because the vehicle’s own systems draw power for the whole (longer) session. The second caveat is scheduling: if your utility has time-of-use pricing, a Level 2 charger can fit an entire charge inside the cheap overnight window, while a Level 1 session may spill into peak hours. That is exactly the gap the Wi-Fi version of this charger exists to close, and it is why we rate that model above this one for anyone on a time-of-use rate. Run your own numbers on our cost-to-charge guide.
Who should buy it — and who should skip it
Buy itif you cannot install a 240V circuit, or if you can but the arithmetic says you do not need one. Renters, apartment dwellers with a reachable outlet, plug-in hybrid owners, and anyone whose daily driving sits comfortably under 40 miles are all genuinely well served here. It is also a sensible thing to keep in the trunk of a Level 2 household as a universal backup — a 120V outlet exists everywhere.
Skip itif you want the charger to schedule around an off-peak rate — the Wi-Fi model does that, and on Level 1 the scheduling is worth more than the three amps it costs. Skip it too if you already have, or can get, a 240V outlet: at that point the Lectron 40A gives you roughly six times the charging rate for a moderate step up in price, and our main charger roundupcovers the field. And skip it if your daily driving is over 100 miles — no amount of overnight trickle will keep up with that.