- Artex® 452-0133 is lithium battery pack. It is replacement battery for aircraft C406 & B406 ELT units. Emergency Locator Transmitter (ELT) battery pack contains lithium manganese Dioxide cells. Each battery pack contains 13.2 grams of lithium metal. Each battery pack is diode protected and double fused. Each battery pack has a net weight of 0.67 kilograms. Each Battery Pack consists of four (4) hermetically sealed battery cells. This item replaces all HM model variants as well.