Battery OPTIMA or OEM BMW

I have an Optima Red Top in my 1990 Cabriolet. I have been very happy with it. It is probably about 7 years old at this time and I have never had a problem with it. Otherwise, I would REC a DEKA branded battery. IMHO, "cheap" batteries are not worth the relatively small ammount of money saved.

I'm on my third battery and was thinking about upgrading it to something more reliable, like an Optima.

When I was running two amps 2 12s eight speakers inside head unit capacitor and a built motor I use the yellow top with good success

Your alternator probably just shit the bed. Was on its last of its life then the added \"stress\" of a stereo system made it kill itself.

Anyway I know people talk a lot of crap about them but I use Optima batteries in anything that can fit them. Mainly because I have a bunch of cars and many of them sit around. Its nice to know that if the battery dies I can condition and recharge it and get back to normal and not worry.

I am entertaining an Optima Yellow Top this time. It's $339, for reference, and I have a feeling it will outlast/outperform the OEM.

Skip the dupmtima battery and save the coin. The extra capacity of a larger battery might not make the battery last longer (+5-7 years), heat kills batteries more than a few seconds of starting, and heat doesn't care if you have a small or large battery.

my optima red top died after 3.5 years and 4800 miles. When it wasn’t driven, I had the battery disconnected. For a $240 battery, I’m extremely disappointed. FWIW, the battery was in a restomod 66 mustang. I bought it in March 2018, and the warranty expired in March 2021.

Optima used to be a big name but they switched manufacturing to Mexico and ever since they just don't hold up.

Optima are junk now as well since they were bought out a few years ago.