Monday, February 24, 2020

Ray's new chademo charger

https://photos.app.goo.gl/X3eMKs6Gz1pgLcC37

The charger is from http://evseadapters.com :
https://www.evseadapters.com/products/portable-chademo-ccs-combo-dc-quick-charger/

7+ kw from a "normal" 240vac source.  Shown in a chair in the first photo.
The third photo shows the source power adapter, J1772 -> NEMA 14-50R.  The charger is equipped with a NEMA 14-50P.

I first test charged an imiev which has a 3.3kw onboard charger.   The chademo charger was set to a limit of about 4kw so it was not appreciably faster than from J1772.  With full power supply, it should charge any chademo equipped car at 7+kw.  Note that commerical chademo stations have an upper limit of 50kw though it is rumored that many do  not do more than about 30kw.

2/26/2020
Ray has corrected my imiev charge power estimate in a comment below.  With normal AC J1772 charging, the imiev is limited to 3.3kw.  The test DC charge was about 5kw and could be "dialed up" to over 7kw.  That is, my imievs can be charged in less than half the time.
Ray wishes to clarify his reasoning for buying an external DC charger instead of having the onboard AC charger repaired on his RedLeaf.  A Dallas Nissan dealer gave a quote for the repair of about $3k.  The Nissan dealer charged a $300 fee for that quote; a good example of why Teslas are gaining popularity.  Ray correctly reasoned that he would be putting $3k into a $1k-$2k car bringing it's worth to $2k-$4k.  The more costly DC charger (about $3.5k, I believe) is portable and can but used on multiple cars even after the target car dies again.

At this writing, the jury is out on charging the pictured Tesla.  The charger was indicating a normal charge but the car, 4th photo, was indicating no charging.
Note there is almost no reason to use the chademo charger on a Tesla.

1 comment:

  1. Your battery was around 360 volts, so with 14 amps going in, the power would be 360 v X 14 A = 5040 Watts. If we had increased the current to 20 amps, then 360 v X 20 A = 7200 Watts. The instructions recommend starting at 14 amps, and if nothing overheats or starts burning, then increase power level.

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