Dead Battery Issue

[Ron61]

I have ran Optima batteries in all of my Cobras and had good service from them. When not running I hook a Deltran Battery Tender to them and one lasted almost 11 years and another just over 12 years. The one that I have now is about 5 years old and is still going strong.

Ron

[RallySnake]

I ran Optima batteries for years. I use a battery tender to keep it charged when in the car is parked in the garage. The only problem for me is the size and weight. They are massively heavy. I bought a Bosche AGM battery a year ago. It is made with the plates flat in the box instead of rolled into a spiral like the Optima.

I read somewhere that you only need 400 cold cranking amps to start a V8 engine in a warm climate. So I bought the small one and it is half the weight of the Optima and much smaller too. It's been working great for over a year.

RS

[Ace23]

Pulled the alternator and took it to get tested. Turns out it failed so another one is on order. I hope this will resolve the issue.