No. As with any battery being charged it is best not to do this in the event of a faulty charger. Follow these safety tip for charging ANY type of battery. Never leave the battery or the vehicle unattended when recharging it. When charging a battery, place it on a non-flammable, and remove any flammable items nearby. Unplug chargers from the battery or vehicle always after the battery reaches full charge. Disconnect chargers when not in use.