Earlier tonight I did some investigation on the Blink
EVSE and determined that the EVSE functions are implemented on a separate board than the Linux computer functions. They are connected by a small multipin harness, and when this harness is unplugged, the EVSE becomes "dumb
". It will then always charge just like a non-smart AV or similar.
In addition, you can optionally unplug the Linux computer board which will shutdown those functions and save some standby power. I measured almost 20 watts standby in the stock configuration, and when taken to "dumb
" EVSE mode, the standby power dropped to 12 watts. (an 8 watt savings!)
This may be a useful temporary solution until Ecotality gets their bugs fixed, so you can rest easy knowing the you'll wake up with a charged car instead of a dead one!
While I was in there I also noticed that the unit is equipped with a cellular modem, which I assume is used when the unit is installed somewhere without internet service.
They used an off-the-shelf single-phase electronic meter
to measure consumption, which is read by the linux board.
Notice: Modification or even opening the case of the Blink
EVSE may be a violation of your contract with Ecotality, so consider this before doing anything!
If you wish to turn your Blink
into a reliable, but dumb
EVSE, simply open the case and unplug the multipin blue cable from the top of the unit on the back board. If you want to shut down the Linux computer also, you can pull the 3-wire blue cable from the bottom of the front board. Note: cut power to the EVSE before opening the case, there is 240V present!
I'll post some pictures when I get time.