The internal battery in my Garmin 430 died.
Has anyone had to replace theirs and did you send the whole unit to Garmin?
I heard Garmin charges upwards of $800 to do it!

Have you asked at Northern Lights Avionics?

I was hoping not to have to send it in anywhere.

I had mine replaced a Western Avionics in Spokane WA, about 2 years ago. I think it was around $250 total.

I did mine two years ago when it was in for annual (next door to the avionics shop), think it was in the same ball park price as Skywagonfloater, nothing like $800, I would have remembered that.

Steve

the battery is a fairly common lithium backup battery Sanyo CR15250sSE-FT, it's available on line from amazon or many other sources for $10-15.00. as for replacing it, here is a link to Van's air force forum that has instructions, read what they say and decide if you want to try it yourself.

http://www.vansairforce.com/community/s ... hp?t=89709

it doesn't sound to complicated, but I work in a radio shop.