The easiest way to check the battery level is in the AvaNet. Open the instrument panel and look at the panel’s top flap. There you will find information about the battery level. You can also check the battery status directly on the AvaTrace by pressing ”check”. If the LED remains lit, the batteries are OK. If the LED blinks rapidly, it is time to replace the batteries.
Check out this video if you want to learn how to change battery pack.