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User dana (Tridium's hardware engineer) explains what you're seeing on this thread:
https://www.niagara-central.com/ord?...onThread/13385

Originally Posted by corny

Im changing mine... just dont have one on my truck so Ive had to order one. Just never heard of one failing the batt test and then passing and then failing again and then passing again......day in, day out.... thought it was odd.

Maybe right on the verge of dying...like a flashlight going dim...keeps surging above and beyond the battery pass/fail voltage?

Im changing mine... just dont have one on my truck so Ive had to order one. Just never heard of one failing the batt test and then passing and then failing again and then passing again......day in, day out.... thought it was odd.

Not trying to be a Smart*ss, but why not change the battery?

Not trying to hijack the thread but I have a jace 600 today and going back thru the logs it appears that the battery is failing the battery test a couple times a day but then it passes.

Its almost a continuous loop of battery test fail then about 7-8 hours later it will pass then an hour after that it fails and continues the loop..

fail....7-8 hours....pass....1 hour....fail......7-8 hours.....pass.....1 hour......fail.....etc...

Like the battery is charging but not holding its charge.

None of mine are "critical" so I don't replace them until they fail the "battery test" the JACE runs on them. I have some that are going on 8 years.

Jace 6 Battery Replacement Interval

Been a while...but I'm back...like a bad penny.

Question: How often do you replace your PM Contract Jace Batteries?

The Manual says every 3 years, but later on says every year if Jace ambient is > 122*F.

So I'm wondering if Battery life reduces linearly as Jace ambient increases.

The reason I ask is we have 5 Jaces in one Equipment Room that's about 100* plus in the summer (chillers and steam heat exchangers).

I know, the safe way is to replace every year, but those batteries aren't cheap anymore.