A.
UN 3496 Batteries, nickel metal hydride (Class 9) is only applicable for sea transport. SP A199 applies. Short circuits must be prevented, exposed terminals must be insulated, batteries must be disconnected from the equipment, and protection from unintentional activation must be done, and the words “Not Restricted as per SP A199” must be entered on the air waybill. It can thence be shipped exempted from the regulations.

SP A154 referring to the prohibition of defective batteries are solely aimed at lithium batteries, however, SP A123 applies to all batteries other than lithium batteries. Any electrical storage battery having the potential of a dangerous evolution of heat must be prepared for transport so as to prevent short circuits and unintentional activation. Unless these precautions are taken, they are not permitted for air carriage. Defective batteries often become the cause of dangerous heat requiring precautionary action.