It's not only a Best Buy but also an Eco Buy because it scored full marks in our sustainability, packaging and recycling assessments. They’re among the best we’ve tested, lasting around six and a half hours when fresh and barely deteriorating over 200 charge cycles. However, they have a smaller capacity than most AA rechargeables, which is why they just miss out on being a Best Buy. TurtleWax’s Zip Wax car wash will leave it looking noticeably shiny and spotless for less than £10. Read our TurtleWax Zip Wax Car Wash & Wax review.