In emergency situations you want things to work. Well, what do you call an Emergency Locator Transmitter (ELT) without a proper battery? There's only one answer: useless.
The MERL BP-1010 Battery Pack is compatible with the Narco ELT-10. With alkaline as part of its construction this battery pack is set to last. In fact, it has a two-year lifespan. If this description sounds like it will fulfill your ELT needs, search no more-your de-stress beacon has located the proper battery pack.