Can't really see this taking off, battery type is specific to application and in a forklift the lithium ion battery really doesn't have anything extra to offer a forklift over a lead acid battery.

Granted they have a higher power density but light weight is not an advantage in a conventional truck as the weight has to be made up else where. Plus purchase costs would be huge compared to a lead acid battery pack

Lead acid just ticks to many boxes to make this viable