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> 914 Battery, Odyssey models, other AGM brands?
post Mar 17 2023, 12:24 PM
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Group: Members
Posts: 189
Joined: 30-April 20
From: Sunnyvale, CA
Member No.: 24,202
Region Association: Northern California

Hello World,

I am needing a new battery for my 2.2 four cylinder 914. I have read many of the battery threads from recent years. I know many of you have had success with Optima, but I've also read about the quality concerns in recent years. The Odyssey seems like a good choice as I've not read any threads addressing quality concerns with this brand.
The Odyssey Group 42 standard size battery for our 914s is 600 CCA, is as heavy as a lead acid battery at about 40 lbs., but it is a plug and play(no extra bracket required). I am not opposed to this option, but like the idea of a much lighter battery.
Odyssey sells a PC925(330 CCA at 24 lbs.) and a PC680(170 CCA at 15 lbs).
My mechanic friend recommended that I stay within 100 CCA of the standard size Group 42 battery, which would mean at least 500 CCA.
My car is stored at a remote storage facility that does not have power, so a battery charger/tender is not an option for me. I currently disconnect the negative battery cable when not using the car, but will purchase a disconnect switch when I purchase the new battery. The car is not a daily driver, and it's not unusual for the car to sit for a week or two at a time without starting or driving it. I have a/c and a CLA for my cell phone, but no radio or other electronic gadgets and I don't run any of the above with the key on.
I've read where several of you have the PC680 or PC925 and have not had any starting issues, but I don't know how often you start your cars or if you use a battery charger/tender to keep it from draining down. I live in California, so CCAs are not as critical as other areas in the country.
Any thoughts on CCA ratings or other issues I should consider? For terminals, do you use the SAE battery posts or the M6 receptacles? Other AGM brands recommended?

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Posts in this topic
JamesJ   914 Battery   Mar 17 2023, 12:24 PM
rjames   I have the Odyssey PC925 with SAE posts and love i...   Mar 17 2023, 12:46 PM
mlindner   I've had Optima's for the last 20 years, n...   Mar 17 2023, 12:51 PM
Root_Werks   I'm running a PC1200 for 3 years on my 2.7 six...   Mar 17 2023, 01:19 PM
yeahmag   Just bought an AntiGravity ATX20-RS https://antig...   Mar 17 2023, 04:02 PM
mepstein   Just bought an AntiGravity ATX20-RS [url=https:/...   Mar 19 2023, 06:30 AM
zoomCat   Group 96R is a drop in, new Die Hard AGM is 31 lbs...   Mar 17 2023, 05:57 PM
nditiz1   Running the PC680 on my 6 conversion. Over winter...   Mar 17 2023, 07:43 PM
PlaysWithCars   PC680 for me as well on a 2.4l six with a high tor...   Mar 17 2023, 11:48 PM
oakdalecurtis   i use an Optima Red, got about 8 years out of my ...   Mar 18 2023, 02:46 AM
slotty008   I have the PC680 since 2 years now. It's very ...   Mar 18 2023, 10:29 AM
nditiz1   Slotty from this angle it looks like that positive...   Mar 18 2023, 11:11 AM
slotty008   Slotty from this angle it looks like that positiv...   Mar 18 2023, 11:48 AM
rudedude   I have an odyssey pc925 that is in one of my 911s....   Mar 18 2023, 11:43 AM
technicalninja   I've used the Optima batteries in quite a few ...   Mar 18 2023, 01:42 PM
ClayPerrine   I have Optima batteries in every single vehicle I ...   Mar 19 2023, 05:58 AM
jim_hoyland   Great discussion of batteries, thanks for the info...   Mar 19 2023, 06:46 AM
ClayPerrine   If you are interested in a lighter weight Optima b...   Mar 19 2023, 07:17 AM
technicalninja   The Li-ion batteries scare me enough to not run th...   Mar 19 2023, 09:23 AM
campbellcj   I've used the PC680 for years now with good re...   Mar 19 2023, 10:27 AM
horizontally-opposed   Have had Optima red tops in my 914 since ~1992. ...   Mar 19 2023, 11:43 AM

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