worked on plenty of this brand
imo they aren't any better than the next brand
every brand has their own set of issues and this brand has its issues just like any other.
as for a 16hr run time?
take a look at the dataplate, most dataplates state an amp hour rate at a specific run time (ie: 843A@6hrs)
Most truck mfg's use a 6hr rate based on a single shift of runtime.
So unless this brand reflects this claim on their dataplate information i do not think a 16hr runtime is official mfg spec.

***smoke and mirrors my friends***

other claims for latest and greatest technology that didn't pan out

i have seen other claims with battery technology where they came out with fast high rate charging systems that can charge a full size industrial battery in 1 to 3 hours and allow for a normal 8hr shift of runtime and then go back and recharge it in 1 to 3 hrs.
Although as attractive as that was for the customer to be able to recharge a truck faster and get it back out on the floor without having to have multiple batteries for a single truck, we found out that during the charging process a battery fire or charger meltdown was a very high possibility so even though it is appealing to the customer to be able to charge batteries faster the dangers associated with this type and method of charging was not as safe as they claimed it was. Plus it is considerably more expensive to buy this technology so most consumers shy'd away from the expense and it is not near as popular.