Head-to-head · Best Level 2 Portable EV Chargers

Grizzl-E Mini Connect (40A) vs J+ BOOSTER 2

Which is the better buy? Side-by-side on rating, price, strengths, and watch-outs — with the published ratings we averaged to get there.

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The short answer

Grizzl-E Mini Connect (40A) comes out ahead by a clear margin (4.9 vs 4.6). Grizzl-E Mini Connect (40A) is best for: Drivers who want one charger that works as a permanent home unit and a travel charger, and who value rugged build and smart scheduling over a low price. Read the strengths below before deciding.

Higher ratedRanked #1 in Best Level 2 Portable EV Chargers

Grizzl-E Mini Connect (40A)

4.9

1 source$480as of Oct 10

The Grizzl-E Mini Connect is the standout portable Level 2 charger, earning a perfect 5/5 from EVChargingStations. It pairs a NEMA 4X aluminum body with Wi-Fi scheduling, adjustable 7-40A output and a carry case full of plug adapters. The lack of a display and its higher price are the only real knocks.

Strengths

— Wi-Fi connected with the Grizzl-E Connect app for scheduling and energy monitoring, per EVChargingStations
— UL Certified and made in Canada

Watch-outs

— No display screen for at-a-glance charging data
— Not yet Energy Star certified

$480 · Buy at grizzl-e.com Full review →

Ranked #2 in Best Level 2 Portable EV Chargers

J+ BOOSTER 2

4.6

2 sources

The J+ Booster 2 is a 40 A, dual-voltage portable J1772 charger with an aluminium body and a 21 ft or 25 ft cord. It takes swappable NEMA 14-50 and NEMA 5-15 adapters. InsideEVs drove two pickup trucks over it, froze the cord and submerged the unit, and the charger kept working; it scored 4.4/5. EVchargerReviews.net (4.7/5) ran it at 40 A for hours with no thermal throttling and called it the most premium portable unit it had tested. It suits drivers who want one rugged charger for the garage and the road. Anyone with an existing NEMA 14-50 outlet installed upside down, or on a tight budget, should look elsewhere.

Strengths

— Kept working after InsideEVs drove an F-150 Lightning and a Rivian R1T over it
— Ran for hours at 40 A with no thermal throttling in a 50 kWh stress test
— IP67-rated, and it passed InsideEVs' submersion test after more than 30 minutes underwater

Watch-outs

— Input cables are only about a foot long, so outlet position and orientation matter
— The most expensive portable charger EVchargerReviews.net has tested
— The cord earned only an average score in InsideEVs' deep-freeze test

Buy at jplusbooster.com Full review →

How they stack up

Grizzl-E Mini Connect (40A)

The most rugged and feature-complete pick, with Wi-Fi and adjustable output the bare-bones Splitvolt lacks; it costs more than the MUSTART, Lectron and Splitvolt units.

J+ BOOSTER 2

The Booster 2 is a premium alternative to the Grizzl-E Mini Connect (40A) and the Splitvolt 40A NEMA 14-50. Its main selling points are a crush-rated aluminium body, IP67 sealing and swappable locking plug adapters. Its controls are a single button and LED indicators, so buyers who want an LCD and app scheduling may prefer the Lectron 40A J1772 Portable (Wi-Fi).

Specs side-by-side

Spec	Grizzl-E Mini Connect (40A)	J+ BOOSTER 2
Max Output	40A / 9.6 kW	—
Adjustable Amperage	7-40A	—
Cable Length	25 ft	21 ft or 25 ft
Plug	NEMA 14-50 (4 adapters incl.)	—
Enclosure	NEMA 4X cast aluminum	—
Connectivity	Wi-Fi (Grizzl-E Connect app)	—
Connector	J1772	J1772
Certification	UL Certified	—
Wattage	10000 watts	—
Max Current	—	40 A (adjustable from 6 A)
Max Power	—	9.6 kW (NEMA 14-50)
Input Adapters	—	NEMA 14-50; NEMA 5-15 optional
Weight	—	Under 8 lb (21 ft version)
Ingress Rating	—	IP67
Crush Rating	—	6,600 lb

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