Originally Posted by John 070
That device looks like a rebranded battery tender, should be ok.
Not sure what your issue is specifically, but my car has sat 6 weeks in the garage, in the winter, and fired right up. So imho German cars are not "hard on batteries." The battery doesn't care what country the vehicle is from.
It seems like a lot of people have a problem with paying $280 for an OEM battery installed and programmed. I suppose there are those who saved $80 to $100, and those who didn't have luck as such.
Again, it's not rocket science. If a battery is only lasting 2 years, it's not the battery, it's something else.
I think you need to consider that having an OEM battery fail every two years is not the norm. but I can see that you want to try Sears or Wal Mart, can't hurt. If it works out for you, I still believe that BMW batteries last more than two years.
Have you load tested the battery that failed at 2 years?
How long had that battery they sold to the poster been sitting on a shelf before it was put in his car?