Original battery seems to have given up after 7 years (2006 Crossfire) with orginal Varta battery.

radio and instruments lights work but engine doesn't turn over. Last week it turned over but "groaned" a bit but started. I don't drive it much so pretty sure the battery is shot. Dealer checked it in may with service and said it was ok.

So any suggestions on what brand to buy?

 

get one that fits and has 825 cold cranking amps,,

 

Lots of posts on this topic - Interstate, Advance Auto, Pep Boys, etc...

Get exact fit and be sure to keep the vent tube from your orig Varta. Also make sure the date stamped on the top of the new battery is fairly current.

 

I got an everstart Maxx and it works great.

 

Costco - Kirkland brand - 3 year free replacement , 7 year prorated. Best battery for the buck. IMHO