2 /5 Ling Ren: This Car-X location is convenient and the staff is very friendly, which is why I gave them a try when I need a battery replacement. But their business practice is questionable to say the least and the mark-up is crazy. The bill for the battery replacement was $286 while a comparable Duralast battery at Autozone sells for $179 (with free installation). Well, Car-x wouldn’t even tell me what brand/model the battery they used, so for all I know, it could be some cheaper generic battery. The worse part is that after the battery replacement, they claimed my alternator needs to be replaced and gave a quote of $1100+. I took the car to a trusted mechanic, and he said my alternator is perfectly fine, and even if the alternator is to be replaced, the cost would have been half of that quote.