warranty exchange ...
(the EVSE not the car :biggrin
This is the second MC240 that has not worked, so I thought it worthwhile to ask if anyone had any other ideas.
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warranty exchange ...
(the EVSE not the car :biggrin
I charge my car nightly, but it rarely takes as much as an hour and a half to complete (standard mode).
Is there any advantage to backing off the home connector from 70A to, say, 48A or less?
Does the charge rate affect the lifetime of the batteries?
Does the efficiency of charging change, either due to losses in the charging system/batteries or due to cooling system operation?
Would it change the noise levels in the garage, or how hot it gets in there?
Explain "not worked" ... did it work and then fail ? Did it behave oddly ? Did the two MC240s show the same symptopms or sequence of symptoms ( in your prior post you said "has never worked" for the current one ) ? What are you plugged into ? Are you sure the wire/breaker is properly rated ? Are other loads on that circuit ? Have you tried using the MC240 on a completely different circuit (even go to an RV park, for example) ? etc etc ...This is the second MC240 that has not worked, so I thought it worthwhile to ask if anyone had any other ideas.
Explain "not worked" ... did it work and then fail ? Did it behave oddly ? Did the two MC240s show the same symptoms or sequence of symptoms ( in your prior post you said "has never worked" for the current one ) ? What are you plugged into ? Are you sure the wire/breaker is properly rated ? Are other loads on that circuit ? Have you tried using the MC240 on a completely different circuit (even go to an RV park, for example) ? etc etc ...
I don't have an MC240, but I do believe it has some indicator lights on it. Any unusual symptoms there ? Did the electrician who "check[ed] out the circuit" also install it ? It's possible neutral and ground are reversed ... which the other "high-draw device" may not care about ... what is that device ? ( Still best to try an RV Park. OR, depending on your location, there are some 14-50 locations listed at EVCN. )... but another high-draw device works fine on the circuit when the MC240 is unplugged and the other device is plugged in. ... I had an electrician check out the circuit.
I don't have an MC240, but I do believe it has some indicator lights on it. Any unusual symptoms there ? Did the electrician who "check[ed] out the circuit" also install it ? It's possible neutral and ground are reversed ... which the other "high-draw device" may not care about ... what is that device ? ( Still best to try an RV Park. OR, depending on your location, there are some 14-50 locations listed at EVCN. )
This has been covered elsewhere here.
240V @ 30Amps seems to be the sweet charge spot.
Agreed. we are too efficient here. :smile:Try finding that in 39 pages of messages! I just looked again and still can't find it.
Doug
We also offer the driver the option of charging to only 3.8V/cell (~50 percent) or 4.10V/cell (~90 percent) to further extend calendar life if the full vehicle range is not needed on the next few trips.
I'm not 100% :biggrin: sure what that refers to, but it might be a "Storage Mode", which was initially meant to keep SOC around 50%. Remember the article is published late 2006 before any cars were ever delivered. Storage Mode with current firmware doesn't go that high, and so this mention of 50% is likely obsolete.I noticed in the blog Tom linked to that it says (emphasis added):
I thought the "Normal" mode charged it ~70% and the "Range" mode charged the battery to ~90%. Does the "normal" charge mode really only charge the batteries to 50%?
I thought the "Normal" mode charged it ~70% and the "Range" mode charged the battery to ~90%. Does the "normal" charge mode really only charge the batteries to 50%?
I don't think it will start charging at 50%; I believe it will drop significantly lower before the charger kicks in. Also, if you start from a very low charge ... it won't go up to 50%. And again, as I said above, the article is older, and firmware updates (based on revised strategies ?) likely have superseded what is being described in Nov2006 regarding the "50% mode".If you're going to leave the car for more than a few days, you can put it into Storage Mode and it won't charge until the charge level drops to 50%, then charges just enough to keep it around 50%. Last time we took a big trip, we left the car with a near full Standard Mode charge, set it to Storage Mode and plugged it in. When we got back 3 weeks later, it was just a bit above 50% and had never needed to charge.
That's interesting. So over 3 weeks you lost about 90 miles of range? I wonder how that compares to the boil off rate of for HFCVs using liquid hydrogen. (In the lab, our 100 liter liquid helium dewars seem to lose about a liter a day.)Last time we took a big trip, we left the car with a near full Standard Mode charge, set it to Storage Mode and plugged it in. When we got back 3 weeks later, it was just a bit above 50% and had never needed to charge.
Agreed. we are too efficient here. :smile:
30A at 240V is the charge time vs battery life happy point. I charge (for now) at 240 at 16 amp just fine for me except those times I come home late with a low charge. Just a bit more would be nice.
Planning for my car, I think the NEMA 6-20 configuration has some nice properties. About 4kW, plug is as easy as a typical house plug. About 16 mi/h charging. Easy to install a receptacle, say at friends' or family houses. 12/3 gauge extension cords can be adapted easily.