Ignition battery

[Andy]

This thread is intended to continue the discussion of the emergency ignition battery that started in -
http://forum.cubcrafters.com/showthr...Tips-amp-Hints

This battery has a manufacturer's design life of 5 years but the CubCrafters maintenance manual template suggests it should be replaced annually.

https://www.power-sonic.com/wp-conte...ifications.pdf

In four years one of the ignition batteries I replaced annually was indeed bad.

That seems to suggest that this maintenance strategy is not working. How long had that battery been bad before it was replaced? Did the battery voltage during the emergency ignition test show the battery was failing before it was replaced?

I suggest that periodic discharge testing and careful monitoring of the battery voltage during the emergency ignition test is a far better strategy than assuming the battery will be good for at least, but not more than, one year.

My FX-3 maintenance manual requires a 6 monthly discharge test with replacement on condition. I may revise the test interval based on test results.