. . former novartis exec to lead cambridge diabetes startup semma . . september 2015 (21) . january 2014 (16) ."if the battery in a mechanical mod over-discharges and the device doesn't contain enough air holes to allow the battery to vent, there is a risk of explosion." . please keep our community civil. comments should remain on topic and be respectful. . http://lm360.us/Ethridge-mother-of-Scotti-from-Bithramere?Broomssis=87 .