Recent content by Nack

Thats how it currently works with all the electric Semis globally. Do you think they put public chargers at their depots? Do you see a lot of places for a semi to charge with a trailer attached mid route? No electric semis are doing cross country runs, they are for local/regional use and mostly...

I ran across these articles today by the ICCT which I thought were interesting related to the question of HD charging infrastructure: Battery electric trucks - US Northeast electric utilities and planning for tomorrow Also: Powering Seattle fleets - Charging infrastructure strategy for battery...

Good question. Seems incredibly difficult to get enough charging @350kW available in many truck depots to support electric trucks. A number of MCS stations would probably be a heck no for most areas. I am very interested to see how this goes as EV semis start appearing in bigger numbers due to...

How big was the rock you are living under?

Semi related article...

Finalized, no. Far enough along that there will not be major changes so hardware can roll out, yep.

Lead times for sites, especially ones that use an MCS charger are quite long if they can even be supported at all due to local infrastructure. If you have a site that has multiple MCS chargers that will be in use at the same time....whoa. One issue with fleets is a lot of the depot sites are...

Came to post this and you all were on it! It was nice to see the tare weights which eliminates some of the guessing although they ended up what was expected IMO. One key note that a lot of people miss is the truck is not meant for all applications. There has been a lot of talk about this truck...

I'm not aware of either piece of information. I assume the Semi is just rolling out to more "fleet test" partners and not an actual sale which is why we do not have price. I have not seen any actual tractor weight info available either.

I believe NHSTA (or other agency in NA) requires exterior mirror(s)? Not sure about the passcar regulations, but it's been an issue for semi-trucks. If you look some of the newer trucks have very small mirrors which meet the minimum requirements and use cameras as supplement for the decreased size.

Good question. From an engineering and functional safety standpoint you have to think about what happens when things don’t go to plan due to a component failure, sw bug, or communication issue. For the CCS plug where the DC pins are separate from the AC pins you KNOW the electricity sent...

Pretty much any battery in an EV has CC and CV charging. The reason why you switch to CV is so you don’t overcharge and because its balancing so it can’t handle all the juice as its bleeding off the high cells so there is no need for a huge inrush of power. When the battery is empty depending...

Most of the trucks have batteries under the cab as well as on the side of the frame. Replacing them is not trivial! Also keep in mind there are coolant connections as well as electrical connections. Its not really fast or easy to change packs….charging them takes much less time!

Well thats part of the plug shape. I should have said plug shape/pinout or whatever but it is the plug interface (minus communication). Most would argue its silly to use the same pins for AC and DC from a safety and risk mitigation standpoint but its what we are going with in NA. I wouldn’t say...

Usually “calibrating” is confirming the starting point for the Coulomb-counting method of determining SOC. If you don’t get into the extreme low or high <20%/>80% the voltage is essentially the same so you don’t really know if you are 50% or 65% SOC as an example as your starting assumption may...