I was at the point of giving the original battery in my year-2000 300m an over-night boost with a battery charger about once every week for the past month, and noticing that the engine wasn't turning over with the same pep that it should.
I'm sure this god-damn heat we've had this summer hasn't helped.
I really wanted for it to go another 2 months - when it would be 12 years old.
And now I discover that the electrical cord under the hood that I've been using on some of those cold winter nights is actually connected to a 70-watt battery warmer/blanket - not a block heater.
I'll get a new battery tommorrow. I'll clean up this old one and take some pictures of it before it goes to the recycler. I'll try to get a build-date and manufacturer from it.