[Rich Biebel]

I've used red tops for 20 years or more.

Always had an alternator and use fan and water pump between rounds with a 10 amp charger usually hooked up.

I've never had a red top fail in any car. I did have one that I removed from racecar and was using in a camper go bad but it was at least 7 years old.

I've seen yellow tops go bad without warning.....

I replaced a red top in my car last year and it says 2013 on it.....It's still good....