. . ."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." . . and our daily headlines will be delivered to your inbox each morning. http://lm360.us/Pluvoise-father-of-Sankoh-from-Lojas?Eschenbren=255 copyright © the asahi shimbun company. all rights reserved. no reproduction or republication without written permission.