Given an Amazon customer review, write a title for the review. The preferred titles are under fifteen words.

Ex Input:
Getting the right power tip was a little tricky, but Tekkeon's customer service is very good. Once I got it configured, it worked perfectly, and seems to add about three hours of battery power.

Ex Output:
Excellent product

Ex Input:
Battery works perfectly.<br />Good vendor, priced well, arrived quickly.<br />It's been about a year and no issues of fit, finish or performance.<br />Would recommend product and vendor.

Ex Output:
Great deal

Ex Input:
It doesn't work with my IPhone 4s, I'm disappointed.

Ex Output:
It doesn't work with my iPhone 4s