The MUSTART 40A portable is the pick when you want real Level 2 charging that moves with you for the least money. It is a true 40-amp unit with an LCD readout and an outdoor-rated connector, and it usually costs less than almost any other legitimate Level 2 portable. If the lowest price on a capable travel charger is the goal, this is the one.
The MUSTART is the value anchor of our best portable chargers roundup - the charger you buy when the budget is tight but you still want genuine 240V speed. This is the closer look. We compile the listed specs and owner reports and do the math - we have not bench-tested the unit - so treat this as documented research, not a lab test.
Who it is for
This is the portable for the price-first buyer: a renter who wants Level 2 without a wall install, a second charger to keep in the trunk, or anyone who needs 240V charging that travels and does not want to pay a premium for a brand name. If you need the extra reach of a 25-foot cable or want a 120V plug in the box too, the EVDANCEis more flexible - the MUSTART's whole pitch is the low price for a capable unit.
The specs that matter
MUSTART lists it at 40 amps / 9.6 kW with a J1772 connector, a NEMA 14-50 plug, and a 21-foot cable. Three things define it:
- True 40-amp Level 2 speed. This is not a slow travel cord - on a 50-amp circuit it delivers the same roughly 30 miles of range per hour as many wall chargers. That is the key point: cheap does not mean slow here.
- An LCD readout. The display shows charging status and fault codes at a glance, which is genuinely useful on a portable - you can see it is working, and see why if it is not, without an app.
- Outdoor-rated connector and enclosure. It is built to tolerate the weather a portable meets in real use, not just a dry garage.
What is good
The MUSTART's case is simple and strong: it delivers real 40-amp Level 2 charging for one of the lowest prices on Amazon, with an LCD that makes it easy to live with and an outdoor-rated build that survives being a travel unit. For a lot of buyers - especially renters and second-charger shoppers - that combination of genuine speed and rock-bottom price is exactly the right trade. Plug it into a proper 14-50 outlet and it is, functionally, a home charger you can also pack.
Where it falls short
The compromises are honest ones. The 21-foot cable is shorter than the 25-foot cords some rivals ship, so measure your outlet-to-port distance before you commit - see our cable length guide. It is a value brand, so fit and finish are functional rather than premium, and there is no app or smart scheduling. And, like every portable, it lacks the energy monitoring of a smart wall unit. None of that undercuts what it is - the cheapest capable portable - but know the trade before you buy.
Using it safely
A 40-amp continuous draw demands a proper outlet. The MUSTART belongs on an industrial-grade, listed NEMA 14-50 receptacle on a dedicated 50-amp circuit installed by a licensed electrician - a cheap outlet is the classic overheating failure point, not the charger. Never run it through a household extension cord, and if you plug it into a smaller circuit, make sure the total load stays within the breaker's continuous limit.
Bottom line
The MUSTART 40A portable proves you do not have to spend much to get real Level 2 charging that travels. It gives up cable length, brand polish and smart features to hit its price, but keeps the thing that matters - genuine 40-amp speed - plus a helpful LCD and a weather-tolerant build. If you want a longer cable or a delay timer, step up to the EVDANCE; if you want the lowest price on a capable portable, buy this. See the whole field in the portable chargers roundup.
