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40A 9.6kW Premium OpenEVSE custom outdoor case with RGB LCD & Real Time Clock, Ammeter and WiFi connected - EVSE K25-50A

  • 60999
  • Save $ 5000

Now includes the WiFi option!

40A 9.6kW Premium OpenEVSE custom outdoor case with RGB LCD & Real Time Clock, Ammeter

  • Premium OpenEVSE 40A in a beautiful custom case for indoor/outdoor use!

In the package, you will receive:

  • Your very own Premium OpenEVSE 40A charging station completely build with the following cables already wired in
    • A Low Temp rubber J1772 "Whip" (plugs into car)
    • A input cable with 14-50P plug (also known as 'RV' plug and Range plug)
  • Level 2 240volt fast charging
  • Built by BSA Electronics in Las Vegas, NV
  • 3 years parts/labor warranty


Product Description

The 40-amp OpenEVSE station is ready to plug into any NEMA 14-50 outlet (240v 50amp), and it works with all production EV’s on the road today. It offers faster charging and more features like a nice LCD at a far lower price than any of the competitors.

It is perfect for customers who are tired of long slow charging with their stock “brick” chargers. I can speak from personal experience; my 2013 LEAF went from 24 hr charge time down to 5 hours! Don’t pay the dealer $1500 for an AeroVironment 30A charger with NO LCD that’s permanently on the wall. (That’s what many including myself have been quoted!) Get yourself an OpenEVSE Charging Station and support the open source hardware/software movement.


  1. More power and features for the money than any other charging station
  2. Can be used with any power source: Plugs into a dryer, RV park or regular wall outlet with available adapters. Save hundreds of dollars on installation - just install a common NEMA 14-50 outlet and you are ready to plug in your OpenEVSE
  3. Great for both Home or on-the-road charging: OpenEVSE can be removed from the wall via slotted screw holes in seconds if you wish to take it with you as a portable charging option. OpenEVSE is just 8.75"x5"x3.5" and weighs ~12lbs with cables.
  4. Real Time Clock (RTC) for Delayed Charging
  5. Ammeter in display to show how much current your drawing
  6. Indoor and Outdoor rated


This Premium version gives you all top of the line parts from the OpenEVSE store. I used the best LCD.. the RGB model that changes colors for different status and Real Time Clock that allows you to set a delay timer great for those of us that can sign up with discounted night time electric rates. I also added the optional Ammeter that shows current draw in amps right in the LCD and now with firmware v3.7.8 and up the EVSE keeps track of kW used per session as well as lifetime, with memory!

It will charge any J1772 compliant car at up to 40A. However you can dial it back to whatever you have for a supply like a 30A dryer outlet (adapters available from me)


The EVSE may be set in multiple steps between 6A-40A in 2 amp increments. This advertises the available current to the EV which intern draws what it is designed for. You can go into the menu and set it for less if you take the EVSE on the road with you to fit what you may find in the wild.


I can now customize the firmware to whatever values you like before shipping. I chose these values to give the user flexibility for various outlets found in the wild. I stop at 40A as this is what the cables are rated for. This unit is constructed with 50A components. It is built to plug into a common 14-50 outlet used in RV parks and Range/Oven’s



  • OpenEVSE board
  • A Low Temp rubber J1772 "Whip" (plugs into car)
  • The contactor is a quality 50A 240v unit
  • The input cable is 50A 6ga. with the popular NEMA 14-50 plug. This is the one all the Tesla guys have installed as well as the standard at RV parks!
  • You can even use the PlugShare app and set the filters to include NEMA 14-50 and see all of them in the country, there are a surprising number of them.
  • It has a nice RGB LCD display.
  • Ammeter for on screen amperage draw plus watt-hour (Wh) session meter and lifetime kilo-watt-hour (kWh) meter on LCD
  • I used a Non-illuminated metal Menu/Select button. With IP65 water resistance rating (pic shows older illuminated button w/ lower water resistance)
  • Heat shrink tubing used throughout.
  • All parts are new.


Here is a link to me demoing a similar unit:



If you would like this unit customized with a twist lock plug for example or something other than the NEMA 14-50 plug I can do that for the difference in parts. For example a L6-30. This would allow you to use many adapters. I also build custom adapters, Please email me with your custom request.


Custom order possibilities:

I get a lot of inquires about custom builds. YES I definitely take orders for anything you would like to see in your EVSE. Example I can build this one here for the same price and make the Whip longer for only a few dollars a foot up to 50ft. Feel free to ask a question.

It will charge any J1772 compliant including home built/converted cars with a J1772 inlet installed.

New Tax Credit now available! 

Federal tax credit for installing EV charging equipment. The tax credit for EV charging equipment is officially called the Alternative Refueling Tax Credit (IRS Section 30(C)). For Consumers, this allows for a 30% tax credit up to a total of $1,000 on EV charging equipment, including installation. The IRS will provide new forms for this tax credit early in the year. Please check with your tax accountant to verify that you qualify.

Case Specs:

  • 8.75 x 5.25 x 3.30 in. / 222.25 x 133.35 x 83.82 mm
  • UL Listed to UL 508A, Type 1, 2, 4, 4X, 12 and 13 specifications (File E352997)
  • Designed to IP66 of IEC 529 specifications
  • Silicone rubber gasket makes this ideal for outdoor use in a wide range of conditions
  • Surface-mounting flanges
  • Stainless steel screws thread into brass inserts for reliable cover seal.
  • Durable, impact-resistant UV Stabilized Polycarbonate material with polished finish


Main Board Specs:

  • Open Source - Hardware (Creative Commons 3.0 BY-SA) and Firmware (GNU GPL v3)
  • Fully supports SAE J1772 Recommended Practice
  • Software adjustable pilot (6A -- 50A)
  • 4W Switch Mode Power Supply Integrated
  • Built in GFCI with 20ma trip point
  • Supports all J1772 states including "ventilation required"
  • Supports Diode check
  • AC L1 -- L2 auto detect Current setting for each (only L2 available on this build)
  • Ground verification and Stuck Relay detection

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