crazyal
Super Member
My take on the Walmart electric truck idea would be to have a battery on the truck but a larger battery on the trailer that could be recharged when the trailer was at the dock.
Since Walmart sends the trucks to the same store with a trailer, and all stores are within a days drive of the regional distribution center, drop trailer and return with empty while the store crew unloads the trailer it could be recharging. So each store would have a charger and the distribution center would have one for the truck battery and one for the trailer.
A few years ago they were playing around with an electric truck with a large battery and a small high speed diesel that could maintain truck on the flats and the batteries would help out on the hills with regenerative brakes recharging on the downhill.
David
I'm thinking that since the stores are all pretty close together each one will be fitted with charging stations for each bay. The truck will back in to be unloaded while the driver plugs the truck in. While it may not fully charge the truck it could put enough extra charge into the battery so it can make it through the day. WalMart has a few advantages. First they can afford to pay for then take all the tax breaks to do it. They have lots of stores and depots so a charging station is not far away. They can afford to have spare tractors waiting at each store just in case one needs more time to recharge. But most of all they don't need to make a profit off of their trucks. To them the PR of going green can offset the added costs (installing their own supercharging stations at each store, the extra trucks, the extra batteries, etc.).