13 captured repliesDiscussion pagination complete · Source accounts, not a confirmed diagnosis
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YOUR RESEARCHBattery
Leading reported evidence
Use duralast type 48 battery
Performed · outcome unconfirmed
No successful repair reported for this finding.
0
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0
Unsuccessful attempts
1
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Performed · outcome unconfirmed
I'm using a Duralast type 48 battery from Autozone.
Leading evidence: 'Use duralast type 48 battery' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, The most frequently discussed action is 'Replace battery out too' (1 discussions). For that action, 0 discussions report a resolution and 0 report an unsuccessful attempt. No action has an explicit, attributable resolution report under the current rules. These are forum reports and suggestions, not a confirmed diagnosis.
Source reports, not a diagnosis or a success probability. Counts refer to discussions and can overlap.
Explicit resolution reports before identified causes, performed actions and suggestions. Within each level, matching component labels precede direct query mentions and inherited thread context; successful versus unsuccessful discussion counts, owner confirmations and independent discussion support determine order. This is not a probability of success.
Discussions that contain suggestions
1
0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.
0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.
Counts describe captured discussions, not unique people or a diagnosis. Author identities are not reliably stored. Exact duplicate evidence is counted once across matching discussions; one discussion counts at most once per action/state. Multiple repairs reported together remain a combination. Suggestions and failed attempts do not establish a fix. Matches cover whole discussions and can include related faults, model variants and incomplete threads.
13 eligible posts · 0 unverified posts · 1 discussions match the subject in their title or opening post.
Rennlist: 1 discussions
0 evidence records excluded for query context · 0 excluded by outcome qualification · 0 adjusted by outcome qualification.
0 acknowledgements have no verified action link; they do not establish a repair result.
Generation: 20261026T105141Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources
Anyone got a suggestion for a replacement? I need a new one for both the 986 and 996. I'd like to find something lighter than the stock units.
Whadayathink?
Tryin' to gain another 1/10th of a second? I want a bigger battery to hold a charge for my boom box, strobe lights, and undercarriage neon.
You know they make them, but the amps are way down. Track car, maybe. Daily driver, no.
2 '99 Porsches, 986,996.
2 OE batteries, 3 Optima Red tops (less than 2 years each), 1 Costco series 48 (less than 2 years), all died. Costco had discontinued Porsche batteries.
Currently running in 986 Optima with just over 2 years, in 996 Walmarts best #48 at $77 for a month now.
For personal reasons I detest shopping at Walmart, but they had the best battery for $43 less than the auto parts chain store that I also don't like.
It's lightweight because the driver's wallet is much much lighter.
I'm using a Duralast type 48 battery from Autozone. Direct replacement as OEM, and it has a vent tube, similar to OEM.
I have been hearing generally good reviews of Optimas. Here are a couple useful threads to save you searching thru a ton of threads.
Optima 1
Optima 2
I found these a while ago because I am kind of tempted too. No vent either
I went with an Interstate H-7. Not lighter, but an exact size replacement fit. Interstate batteries are high quality and I have had very good luck with them. These cars have long battery cables and I did not want a marginal quality battery stressing the electrical system.
This is a source reference. Confirm exact model applicability in the original material.
