When a conventional lead/acid batter explodes, it's generally due to a buildup of hydrogen gas generated by the battery. I'm pretty sure that these "modern" batteries don't produce these gasses.
Mark
Maybe not explosive but highly toxic.
Back in the 80s the Minuteman III Launch Facilities had massive Lithium Ion batteries installed for extended survival power. It cost millions of dollars.
Maintenance troops penetrating the sites started noticing bulges in the batteries and the Air Force found they were deteriorating and leaking extremely hazardous gases into the underground, closed, Launcher Equipment areas.
The maintenance troops then had to take out special detectors which had to be lowered into the equipment area prior to the teams climbing down.
The batteries were removed after a few years at the cost of several million more dollars.
Lithium Ion batteries that size are really dangerous.