On Mar 29, 7:43 am, (Drew Dalgleish)
wrote:



My ameri-king uses only duracells and they have to be replaced every
year.

That's not true. According to ACK's document
http://www.ackavionics.com/images/Mo...ELT_Manual.pdf
You only need to replace the Duracell dated batteries before the
expiration date printed on the batteries. That document is an FAA
approved document.