so lets say they can tweak their machine to be able to run 2 shifts on a single battery charge. It's still going to have to be recharged which is going to take at least 8hrs and then the cool down time after that.
So are they really gaining anything from this?
Still going to require multiple batteries to run a productive and efficient operation.

The consumer will have to buy the special battery that can actually last 2 shifts unless they are claiming ANY battery will last this long based on how the truck runs. So still stuck with the above scenario.

And lets say they claim using a battery charger that will quick "opportunity charge" a battery will eliminate the charge time and cool down time, this is not like putting a battery through a full charge cycle and i don't care what they say about this type of charging, it is not healthy for the battery in the long run.
And lets not forget my previous post about high rate charging systems and the dangers of those type of systems, not to mention the cost of them to begin with. The trade off is not good enough imo.

I would feel safe to say jungheinrich has made a trade off of tweaking the truck with low power settings to allow the machine to run this long so it will be slower in every respect. I've seen other mfg's attempt this and fail at it because the operators complain about how slow the machine is and wind up turning the settings up to run faster which negates the whole "energy saving" and "long runtime" scenario.

I saw a lot of promise when all the mfg's came out with the newest control systems with the A/C powered drive systems and they do gain a bit of efficiency which does allow a better ratio between run times and battery charge cycle life so in effect they do get more run time out of each battery charge but i have not seen anything like this under normal conditions even with the newer A/C control systems.
And let's not forget how sales literature and promotional advertisements go, they usually wind up being a misconception based on facts they do not reveal in the advertisement that are only found out after the consumer buys the machine only to find out there is a catch to achieving this goal they claim, or that the special ground breaking claim they make can only be met under certain conditions that they fail to mention in the promotional sales media.

I guess only time will tell to see if this is truly a miracle milestone in the material handling industry.