Click noise, every 30 sec's, voltage drops .3v, next click voltage returns?

Update: Click noise, every 30 sec's, voltage drops .3v, next click voltage returns?

FlyNNN said:

Since I saved some money by not having to buy a new battery, I purchased a new charger from Canadian Tire. A "smart" charger that knows what a AGM battery is.

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Wow! What a beautiful couple they make. New AGM battery and smart charger. My Jeep hasn't been this "perky" in a long time. Instant starts. 13 or more volts at start-up are what this RENIX likes.

FlyNNN said:

A strange by-product of this situation; my vehicle now starts IMMEDIATELY upon turning on the ignition (like it should!). Normally took 2-3 secs before the engine would fire up. It's been 15 years since that last occurred. The delay started after a return from a dealers service center. Never could figure out what caused the delay or how to resolve.

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I've been pondering about this. I have a theory that while the Jeep's computer was in a un-powered state for a couple of days, stored data about run settings were cleared and the system reverted back to default settings. I didn't think the RENIX computer did that. Just a theory. It has been starting great ever since. This problem with the antenna (?) has turned out to have some positive consequences.

FlyNNN said:

Couldn't get much simpler. After all the years of participating in Jeep forums, I have never come across this subject (albeit, I was never looking either). Thanks.

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Its usually the simple things that get overlooked. A/C ripple will quickly destroy the battery..