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The best EV charger for campgrounds and RV hookups

An RV site is a 240-volt outlet in a field. With the right portable and two adapters, it is also an overnight charge.

By Sawyer V. · Published September 10, 2026

An electrical hookup post at an RV campground

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This is one of the genuinely useful things a portable charger unlocks, and hardly anyone writes about it. Campgrounds and RV parks are full of exactly the outlets an EV wants, they are everywhere, and a night on a 14-50 hookup fully replaces a long driving day.

Campground picks

Ranked for a first home charger. Every row jumps to the full write-up below.

#ProductBest forMax outputPrice
1J+ Booster 2The best portable overall. J1772, 25 ft cable.The best portable overall40 A9.6 kWCheck price on Amazon#ad how we are funded
2MUSTART Level 2 portable chargerBudget portable. J1772, 25 ft cable.Budget portable40 A9.6 kWCheck price on Amazon#ad how we are funded
3Lectron portable Level 2 chargerTravel and rentals. J1772, 21 ft cable.Travel and rentals32 A7.7 kWCheck price on Amazon#ad how we are funded

What each hookup gives you

RV site outlets and overnight range
HookupVoltsCircuitMax chargingMiles/hr10 hours
NEMA TT-30120 V30 A24 A / 2.9 kWabout 10about 100 mi
NEMA 14-50240 V50 A40 A / 9.6 kWabout 34about 340 mi
NEMA 5-20120 V20 A16 A / 1.9 kWabout 7about 70 mi
Maximum charging is 80% of the circuit rating -- the continuous-load rule. Miles at 3.5 mi/kWh. Full outlet guide.

The 14-50 row is the one to aim for. It is the same socket used for a home charging circuit, so a portable plugged into an RV pedestal charges exactly as fast as it would in your own garage.

What to carry

  1. A portable Level 2 charger with a NEMA 14-50 plug. The core of the kit.
  2. A TT-30 adapter. This is the one that turns a huge number of ordinary campsites into a charge. Buy it from your charger's manufacturer or one they approve.
  3. Adjustable current on the charger. Site wiring varies enormously in age and quality. Being able to dial down to 16 amps is what lets you use a pedestal you are unsure about.
  4. A 5-15 adapter, as the always-works fallback.

Never chain two adapters together. Each junction is a heat source under a sustained load, and stacking them concentrates the risk where nobody is looking. Adapters, sorted out.

The etiquette, which matters here

  • Book a site with the hookup you need and say you will be charging an EV. Most parks are entirely relaxed about it once asked.
  • Expect to pay. Sites price by hookup amperage for a reason -- you are buying electricity, and a full overnight Level 2 session is real energy.
  • Do not use a pedestal at a site you have not paid for. That is theft, and it is the behavior that gets EVs banned from parks.
  • Turn the current down on unfamiliar wiring, then check the plug is not warm before bed.
  • Route the cable so nobody trips, and coil it in the morning.

The campground chargers in detail

Three portables with adjustable current and adapter support, each with the case against it.

1. The best portable overall

J+ Booster 2

J+ Americas · J1772 · 40 A / 9.6 kW · 25 ft cable

A 40 A portable in a military-grade aluminum body, ETL certified to UL standards and IP67 rated, weighing 2.2 lb without cables. The portable that behaves like a wall unit.

What is good

  • 40 A, matching many wall-mounted units
  • Eight amperage settings from 6 A to 40 A, so it fits almost any outlet
  • Adapters for a wide range of outlets, including NEMA TT-30 for campgrounds
  • IP67 and drive-over resistant, which portables usually are not
  • 2.2 lb without cables, so it genuinely travels

What is not

  • Costs more than most portables, and more than some wall units
  • Every extra outlet adapter is a separate purchase
  • Still a portable, so it is not rated for permanent outdoor mounting
Published specifications for the J+ Booster 2
Maximum output40 A / 9.6 kW at 240 V
Adjustable6, 8, 12, 16, 20, 24, 32 or 40 A
Power range1.4 kW to 9.6 kW
ConnectorSAE J1772
Cable21 ft or 25 ft, depending on version
Adapters includedNEMA 14-50 and 5-15
Further adapters available5-20, 6-15, 6-20, 6-50, TT-30
Weight2.2 lb without cables; 7 lb with cables and adapters
BodyMilitary-grade aluminum, drive-over resistant to 6,600 lb wheel loads
RatingIP67 waterproof and dustproof
CertificationETL certified to UL standards

Skip this if: Skip it if you only ever charge in one place. A hardwired wall unit is cheaper for a fixed installation.

Specifications above are the manufacturer’s published figures. Source: J+ Americas. We have not tested this unit — see how we pick.

Check price on Amazon#ad how we are funded

2. Budget portable

MUSTART Level 2 portable charger

MUSTART · J1772 · 40 A / 9.6 kW · 25 ft cable

A 40 A portable with an LCD display, adjustable current and a delay timer, at the budget end of the category. The display is genuinely useful on a unit with no app.

What is good

  • 40 A from a portable, the same speed as many wall units on a NEMA 14-50
  • LCD display shows current, voltage and power without needing an app
  • Built-in delay timer for off-peak charging with no phone involved
  • Adjustable current, so it works on smaller circuits too

What is not

  • Two-year warranty, shorter than the three-year category standard
  • We could not verify a specific safety listing from published sources -- confirm before buying
  • No app or connectivity of any kind
Published specifications for the MUSTART Level 2 portable charger
Maximum output40 A / 9.6 kW at 240 V
Adjustable15, 25 or 40 A, depending on version
ConnectorSAE J1772
Cable25 ft
PlugNEMA 14-50
DisplayLCD showing current, voltage, power and status
Delay timer1 to 10 hours
Warranty2 years

Skip this if: Skip it if you need a documented safety listing you can verify -- see the note below before buying.

Specifications above are the manufacturer’s published figures. Source: MUSTART. We have not tested this unit — see how we pick.

Check price on Amazon#ad how we are funded

3. Travel and rentals

Lectron portable Level 2 charger

Lectron · J1772 · 32 A / 7.7 kW · 21 ft cable

A plug-in portable that runs at Level 2 speed from a NEMA 14-50 and drops to a standard wall outlet with the included adapter. The travel unit, not the garage unit.

What is good

  • Level 2 speed from a NEMA 14-50 without an installed charger
  • Falls back to a standard household outlet with the adapter
  • Small enough to keep in the trunk

What is not

  • 32 A ceiling, meaningfully slower than a 48 A wall unit
  • Not weather-rated for permanent outdoor mounting
  • Repeated plugging and unplugging wears a NEMA 14-50 receptacle faster than a hardwired unit
Published specifications for the Lectron portable Level 2 charger
Maximum output32 A / 7.7 kW at 240 V
ConnectorSAE J1772
PlugNEMA 14-50, with an adapter for a standard outlet
UsePortable. Lives in the car, not on the wall

Skip this if: Skip it if this is your only charger and you have a garage. A wall unit is faster and does not live in your trunk.

Specifications above are the manufacturer’s published figures. Source: Lectron. We have not tested this unit — see how we pick.

Check price on Amazon#ad how we are funded

FAQ

Questions people actually ask

Can I charge my EV at a campground?
Often, yes. RV sites commonly have NEMA TT-30 or 14-50 outlets. A 14-50 hookup gives full Level 2 speed, about 34 miles of range per hour. Book the site and expect to pay for the electricity.
What adapter do I need for an RV park?
A NEMA TT-30 adapter covers the common 30-amp pedestal; many sites also offer NEMA 14-50, which most portable chargers plug into directly. Use adapters made or approved by your charger's manufacturer.
How much range does a TT-30 hookup add overnight?
About 10 miles of range per hour, or roughly 100 miles over a ten-hour night.
Is it OK to charge from an RV pedestal without asking?
No. Campgrounds sell electricity by hookup, and using a pedestal you have not paid for is theft. Book the site and say you will be charging.

Sources

Where these numbers come from

  1. Portable Level 2 EV charger 40A (UL) -- J+ Booster 2 — J+ AmericasCurrent settings, adapters, weight, IP rating and certification. Fetched 2026-09-10.
  2. MUSTART Level 2 EV charger, 40 A, NEMA 14-50, 25 ft — MUSTARTPublished output, display, delay timer and warranty.
  3. Lectron Level 2 EV chargers — LectronPublished output, plug type and included adapters.
  4. NEC Article 625: EV charging equipment — WireRef

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