I've been buying Deka batteries for awhile now and they have been great to me as a customer.
I bought a red top used off craigslist over 3years ago and it's still great.
A few months ago I replaced the autozone battery with an optima red top. I've left the lights on twice for over half the day and the car still started right up. I'm really impressed with how strong the red top cranks.
I just ordered a Deka EXT20L, from what ive read everyone loves it. At $87 from Lowes its worth the gamble. Its a sealed AGM battery so it can be mounted anywhere, ill be putting it under the rear seat.
I use Red top Optima batteries in all my cars, I truly hate flooded lead acid batteries as they will leak at sometime in their life.
I run a Optima yellow top as well, but mine fits in just like stock.
I have an optima yellow top in mine.
So, I replaced it with a new optima battery anyways. Still have the issue.... Moved onto the car alternator. Tested it with my DVOM and it was giving out 13.7V at idle.
Johnson Controls ruined Optima.
Optima batteries have taken a hit in quality in recent years.
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