Lithium thionly chloride batteries have a lithium metal anode and thionly chloride (SOCl2) as active cathode; it has the highest specific capacity and specific energy in all practical chemical power sources and is widely used as a new energy system in electronic devices. This battery is ideal for such long-term applications as power for electronic devices and electric power, water, and gas meters, and especially as a backup power source for memory ICs. They deliver a voltage of 3.6 V and are cylindrical in shape, in 1/2AA to D format, with spiral electrodes for power applications and bobbin construction for prolonged discharge.