New Battery
01-11-2019, 02:19 PM
#1
Rennlist Member
Thread Starter
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.
01-11-2019, 07:17 PM
#2
01-12-2019, 11:47 AM
#3
Rennlist Member
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.
01-17-2019, 10:15 AM
#4
Rennlist Member
Thread Starter
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.
My ground cable looked good, but went through and cleaned and tightened all the grounds in that area while I had everything opened up.
01-17-2019, 05:53 PM
#6
Rennlist Member
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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01-18-2019, 02:51 AM
#8
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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.
Ed
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.
Ed
01-18-2019, 03:07 AM
#9
Rennlist Member
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.
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.
01-18-2019, 09:51 AM
#10
Rennlist Member
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.
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.
01-18-2019, 10:06 AM
#12
Rennlist Member
EDIT: turns out I didn't have excessive current draw, so I have no explanation for all the dead AGM batteries other than they just don't work well in our cars.
Last edited by TheOtherEric; 03-13-2019 at 11:54 AM.
01-18-2019, 10:15 AM
#13
Rennlist Member
I am now using CTEKs for all the cars.
01-18-2019, 06:09 PM
#15
Rennlist Member
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.