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2,105 Posts
Discussion Starter · #1 ·
Hey guys,

As you can see from the title, I am looking for recommendations on a portable EVSE with adjustable amp ratings. Only levels I really need are 24 amp for using a dryer outlet on a 30 amp breaker, and 32 amps for full speed charging if I can find an outlet on a 40 amp breaker.

I had planned on the Tesla EVSE with an adapter to J1772, but at least one member here has had trouble with two separate Tesla EVSE's.

The Tesla EVSE is $300 but you need an adapter to go to J1772, for another $250 and at least two additional power adapter for NEMA 10-30 and NEMA 14-30 in addition to the NEMA 5-15 and NEMA 14-50 that come with the MCU.

I found the Maxgreen L2 for $399.99 that can charge at 16, 24, or 32 amps.
Zencar sells a similar unit, but they don't have any new ones for sale on Amazon, just one used one.

Are there any other easily portable adjustable units?

Anyone have experience with any of the above listed units?



233 Posts
I have had very good experience with OPENEVSE products

  • Very clear user interface with text prompts. Two-line color display
  • Automatic L1 and L2 detection.
  • Default current limits from 6-80A for L2, and 6-16A for L1
  • Simple, push-button programming
  • All flavors of products, from a finished product to semi-assembled
I have at least 6GW delivered through mine and it has been dragged from Maine to New Jersey for over a year.

My option was to purchase a semi-assembled 'kit' in late 2017 for $299 that required I supply the connection pigtail (Purchased a 14-50 stove connector from Home Depot, and then made some adapters as needed). Assembly was exactly that--drop parts into a NEMA waterproof enclosure and screw them in. Overall, I had about 4 hours from start to charging the Bolt.

My default setup is to set L1 current limit to 12A, knowing that the Bolt will be limited to this and will start at 8A. For L2, I chose 20A as a safe limit for an unknown circuit. Once I can see what the circuit can provide, such as at a trailer park, I can easily ramp up the current limit to 30-32A,

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