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The size, it's a 9A34. It can be any make (like DieHard, Exide, etc.). I use a Deka Intimidator which is a superior AGM battery from East Penn company:
Mine checked out as 904 CCA when new two months ago. At a Lexus dealer a month later, checked out as 1146 CCA. Don't know if any others can beat that. Note that a size 24 battery is often stock and is the same dimensions other than being 1" taller.
Now running Interstate batteries in all 3 Lexus cars with no issues. Had a Yellow Top Optima in the SC but when it died went to the Interstate in that car, too.
It looks like my battery is a rebranded Cold Spec Interstate battery Lexus sells for $130-160 which is likely the exact same one sold at Costco. (I've heard rumors about being rebranded but I guess Lexus uses Interstate and Exide while Japan Lexus batteries are Panasonic.) See the photo with access caps and says sulfuric acid. This is not the $450-$500 AGM Furukawa/Panasonic Lexus battery. Deka is an expensive though still cheaper than OEM AGM but I wonder how long that AGM would last. I'm usually in the hot desert climate and cold desert winters LOL. It could just be end of battery life or something up with the car itself. Car starts = I'm happy now.
I noticed my alternator/charge voltage used to be 13.6-13.8v. Now with this new battery, the alternator/charge voltage would sit at 13.9-14.0v even. I guess my next battery would be anything from East Penn Company. I'm sharing this knowledge with several FB LS groups.
The original batteries on a new Lexus (built in Japan) are usually Panasonic. Replacement "Lexus" batteries can be from from any supplier (usually the lowest bidder, usually Eastern Penn - they make "OE" replacement batteries for many car manufacturers in the US). With so may failed batteries, it sounds like something is wrong with your electrical system (charging, parasitic drain) that needs to be diagnosed and fixed.
My battery died on 9/29, exactly five years to the day since it was installed. I tried charging it, but even though the charger said it was full, there was no juice to start the car. I tried a jump pack, and it told me the battery was too far gone.
Anyway, went to Costco to get the Interstate replacement, and they said they didn't have it, but could order it for me. When will be in? Oh, maybe in a month or so
I called around, and no one had the battery, so I figured I'd just try the dealer. They had it, so I went over there yesterday and got it. The invoice says "Interstate", so I paid an extra $60 over the Costco version to get one with a Lexus sticker on it. No big deal, but it was interesting to see that the dealer battery was actually an Interstate. From reading this thread, I was expecting something else.
The charger I bought is also a tender, so I'll have to leave in plugged in to keep the battery in shape. I've only done 3100 miles since Jan 2020, and most of that is short trips running my daughter to practices, etc. That's not good for the battery.
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The charger I bought is also a tender, so I'll have to leave in plugged in to keep the battery in shape. I've only done 3100 miles since Jan 2020, and most of that is short trips running my daughter to practices, etc. That's not good for the battery.
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All chargers will keep the battery "in shape" or charged up. The Battery Tender brand, along with some others with the more advanced electronics, does not have to stay plugged in (although that's nice to do) as it will adapt very well to when a charge needs to be full or just maintaining. Less advanced just keep the same lower charging current all the time.
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All chargers will keep the battery "in shape" or charged up. The Battery Tender brand, along with some others with the more advanced electronics, does not have to stay plugged in (although that's nice to do) as it will adapt very well to when a charge needs to be full or just maintaining. Less advanced just keep the same lower charging current all the time.
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Just wanted to update everyone. I hate to be one of those people who ask for opinions/advice and then disappeared. This forum quality isnt the same as it used to be a long time ago.
It's been about a year since my last post. So far I've been able to park the car for 10 days without any issues. I bought the Group 27 Duralast Gold from autozone.
09-19-21, 07:46 PM
