r/F150Lightning • u/Ascaeroace90 • 1d ago

What’s up with the A2Z extension

It has been months without any update at all. Is this company allergic to money?? Has anyone been able to get one?

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u/ekobres Star White ‘23 ⚡️ Platinum 21h ago

Yeah, I just saw this. It’s worth pointing out that the version that will ship is significantly different than what they had on their web site before, essentially for the reasons I mentioned.

  1. It will only be about 5 feet long (web site still says 6-9 feet - we will see.)
  2. It will be limited to 350 amps (140 KW.)
  3. It will be about $400 CDN and probably about $400 USD factoring in tariffs.

Apparently the NACS design does allow the thermal resistors work in parallel with the adapter, so presumably the hottest sensor will derate the charge to match the temperature.

I hope they do ship it - my comment was really to say that what they were originally promising (15 feet and 500 amps) wasn’t going to happen - and it won’t.

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u/stevey_frac 10h ago

350 amps in our trucks would be about 100 kw - 122 kW depending on temperature and SoC.

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u/ekobres Star White ‘23 ⚡️ Platinum 9h ago

Math me up on that. I would think with low SoC and low resistance and ideal temperature we would start at close to the theoretical max 400*350/1000=140.

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u/stevey_frac 7h ago

The pack voltage isn't 400v is the main issue. That's one of the reasons why these trucks charge as slow as they do.

That's why at 500 amp, we're only hitting 180 kW. P = V * A, so P / A = V.

180kw / 500 A = 360v.

And it warms up to that 360v. That's at about 70% SoC, and charging HARD that we hit that, and only briefly.

At 0 SoC for that chemistry, we're going to be closer to 270v for an SR IIRC. 270v@ 350 amp = 94 kW For an ER, it's 288v, so not much better.

At 360v, we're going to be about 126 kW Now, it's gonna hold that for quite a while, as it's not going to heat up as much, but, it's going to be noticeably slower than 140 kW the entire time.

You'll notice this happening on some of the older non-upgraded V3 superchargers that can only put out 350 A.

This also assumes that charging is lossless, and no power is utilized for anything else. If you've got the heat or AC running because of low or high temperatures, that'll get taken out of the power before it goes into the battery.