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When we're using our AC chargers, level 1 or level 2, the truck is converting the 120V/240V AC to the DC battery voltage with the on-truck charger. That charger is a bunch of power electronics, and it has some power loss, and therefore an efficiency. Besides possible errors in sensing energy...

openevse.com, adjustable in 2A increments. I've been using this charger for 5.5 years. No issues and totally user-serviceable.

It's part of the J-1772 charging specification for level 1 charging. Whenever a EVSE sees a 120V input, it limits the charging to a maximum of 12A continuous. The vehicle manufacturer can further limit the maximum current drawn to a level less than 12A continuous. My version of the Bolt EV...

I've been using a OpenEVSE for the past 5 years charging my Bolt EV. I also use it for my SR pro. There's a lot to like about the OpenEVSE products - mine is wired to a NEMA 14-50 and is therefore limited to 40A. You can also adjust the charging current in 2A increments, which is super handy if...