Hmm.. did a search, nothing turned up. Posted the same basic question on Rennlist - so if you've seen this before, sorry..

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I made the mistake of displaying the system voltage on the multi-instrument-display.. and noticed on startup that the voltage appears to be around 12V. Once started it comes right up to 13.6-14.8V - so I'm guessing the display is fairly accurate (and I compared it to my DVM - and they read the same.)

Car starts and runs fine - but going on a road trip in a few weeks, so a preventive battery replacement appears to be in order soon.

Question - to those who have replaced their batteries on the 958 series: Is there a vent tube? I've looked at a lot of AGM batteries (it appears there are two manufacturers pasting different brand labels on two basic AGM size 49 batteries) - and on some of them there is a "Vent Tube Required" notice. I know various flooded-cell batteries always had a vent tube - did the OE AGM battery use one?

Also - what did the dealer charge to reset the "registration" of the battery? It's probably not critical as long as you stay with the same type (AGM vs flooded - AGM uses a higher charge voltage) - but probably still worth having done.

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Thanks!

 

I can answer the vent tube question - yes there is a vent tube. Happily the standard for the Type 49 design seems to be tight enough that the existing vent tube fit just fine. As did the plug for the vent in the other end of the battery.

Still no answer on "registration"..