NOTE: Lithium-ion batteries ought to now not be installed checked luggage. Delivery the DeWALT FlEXVOlT™ Battery The DeWALT FLEXVOLT™ battery has two modes: Use and shipping. Use Mode: When the FLEXVOLT™ battery stands by myself or is in a DeWALT 20V Max* product, it will perform as a 20V Max* battery. When the FLEXVOLT™ battery …