im having pretty ****** luck with the ballistics. mine was great until this week end. 2 years and mine cracked. might have been my fault. they don't take any abuse from the charging system, 15+ volts for any real amount of time fries them. my friend had gone through 3 of them this year.

mine didn't seam even know if it was -20 or 120 degrees out side. it was great up until it quit