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Old 01-11-2019, 03:19 PM
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RJKK
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Default New Battery

Nothing like dropping in a new battery and having the car fire loud and proud a heartbeat after turning the key. Knew the old battery was losing its punch, just didn't realize by how much.
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Old 01-11-2019, 08:17 PM
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Railmaster.
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Originally Posted by RJKK View Post
Nothing like dropping in a new battery and having the car fire loud and proud a heartbeat after turning the key. Knew the old battery was losing its punch, just didn't realize by how much.
Nice to hear! Have You fitted the battery vent tube?
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Old 01-12-2019, 12:47 PM
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HalfGerman
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How was the ground cable? Didn't like the look of mine so I swapped it, also chose a AGM battery. I made sure I wrote a date on the battery when I installed so I can quickly check how old it is for the future.
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Old 01-17-2019, 11:15 AM
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Yes, fitted the vent tube - the new Interstate versions let you choose either the left or right side of the battery to run the vent tube which is handy.
My ground cable looked good, but went through and cleaned and tightened all the grounds in that area while I had everything opened up.
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Old 01-17-2019, 01:25 PM
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I did the Anti gravity Lit-Ion batt. Great product and light...
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Old 01-17-2019, 06:53 PM
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Originally Posted by RJKK View Post
My ground cable looked good, but went through and cleaned and tightened all the grounds in that area while I had everything opened up.
Actually, if you are going to worry about any ground straps, its the one between the chassis and the starter lug barrel nut. That one is exposed to the elements and out of sight.
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Old 01-17-2019, 07:02 PM
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Originally Posted by HalfGerman View Post
...also chose a AGM battery.
I've never seen an AGM with a vent tube and since it is in an enclosed area, it should have one. FYI, they can gas.
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Old 01-18-2019, 03:51 AM
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AGM isn't suitable for our cars. The newer cars with higher circuit voltage need them and the alternator put out higher voltages as well. Our older style system won't charge AGM's fully. I assume in the long run, the battery will die early.
My wife's AMG just needed 2 new AGM's and I had inquired about using standard lead acid batteries instead. They told me quickly that standard batteries would frequently get overcharged, internally kind of boil and also die early.
Would be nice to read about your experience with AGM's over time.
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Old 01-18-2019, 04:07 AM
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Originally Posted by EckFe1 View Post
Would be nice to read about your experience with AGM's over time.
Ed
My latest vehicles came with an AGM...not by choice. My 2015 Porsche 911 Carrera 4 GTS came with an AGM and so did my 2016 BMW R1200 GS Adventure.

The trouble with an AGM is you cannot maintain them. I highly doubt I will get my usual 15+ years out of them as I have with my factory installed lead acid batteries in my previous vehicles. We'll see.

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Old 01-18-2019, 10:51 AM
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Originally Posted by IXLR8 View Post
My latest vehicles came with an AGM...not by choice. My 2015 Porsche 911 Carrera 4 GTS came with an AGM and so did my 2016 BMW R1200 GS Adventure.

The trouble with an AGM is you cannot maintain them. I highly doubt I will get my usual 15+ years out of them as I have with my factory installed lead acid batteries in my previous vehicles. We'll see.
Iíve been buying AGMs (Optima Red and Yellow) for my 993s for 15 years and only get 2-3 years out of them. Why do I keep buying them? Because unlike lead-acid they never leak in the trunk, plus when they die under warranty (common) you get a new one for free.
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Old 01-18-2019, 10:59 AM
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Originally Posted by TheOtherEric View Post
Iíve been buying AGMs (Optima Red and Yellow) for my 993s for 15 years and only get 2-3 years out of them. Why do I keep buying them? Because unlike lead-acid they never leak in the trunk, plus when they die under warranty (common) you get a new one for free.
Eric, have you kept your AGMs on a tender and on the correct, AGM setting?
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Old 01-18-2019, 11:06 AM
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Originally Posted by Mark in Baltimore View Post
Eric, have you kept your AGMs on a tender and on the correct, AGM setting?
Usually I do, yes. But I havenít found it to help much, meaning that Iíve had them die early while on a tender. Iíve been having a bit of a current draw that I need to sort out, and that might be contributing.
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Old 01-18-2019, 11:15 AM
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Originally Posted by TheOtherEric View Post

Usually I do, yes. But I havenít found it to help much, meaning that Iíve had them die early while on a tender. Iíve been having a bit of a current draw that I need to sort out, and that might be contributing.
Thanks, sir. Good to know. I went through two Odysseys with the race car, but I killed them because I kept on forgetting to put them on a tender. I am now using CTEKs for all the cars.
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Old 01-18-2019, 05:27 PM
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Originally Posted by TheOtherEric View Post
Iíve been buying AGMs. Why do I keep buying them? Because unlike lead-acid they never leak in the trunk.

How do they leak? Does the case split or does your charging system overcharge them?

I've never had one leak on me yet.
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Old 01-18-2019, 07:09 PM
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Originally Posted by IXLR8 View Post
How do they leak? Does the case split or does your charging system overcharge them?

I've never had one leak on me yet.
Not sure exactly how they leak, but they can and do. The only time I ever tried a lead acid battery, it leaked after the first track day. I don't recall if it was a failed or unattached vent tube or what, but I do recall a LOT of scrubbing with baking soda afterwards. Ditched that battery right away. Not worth it. Sure AGM sucks, but at least they don't leak.
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