arrgghhh... Mine just died tonight. It was the original battery: I have had the 3.0 x5 since October 2000.

I keep reading about folks replacing their batteries with "sealed" ones to avoid the venting systerm. But based on things I have been reading on the net, I don't think this is a good idea. Apparently, there are gases produced/released from the battery, and since this battery is inside the car, as opposed to under the hood, passengers would be exposed to these unhealthy gases. Anyhow, I am no expert, but I would stick with vented ones...

Has anyone installed a diehard one on a 2001 3.0 X5?