Dynon Skyview HDX Backup Battery life

[Notarpilot]

Well, it seems after 4.5 years my original backup battery is no longer holding a sufficient charge to complete the annual battery check. How long have you guys been finding your backup batteries lasting?

 

[airguy]

I replaced my first one at 7 years, second one has 4 years so far and working fine

 

[ned]

I purchase mine in 2014 and it passed the test again in May 2026. skyview touch

 

[Stevec]

Mine have been there since 2013 and still passed the test this year.

 

[PYoder]

Five years and one of my two is not passing

 

[Foxlees]

Mine has been going now for 11 years with out fail.
S

 

[Bardample]

Purchased 2014, still ok at 2026