Here is a review left by a customer on a product. Would you say he was satisfied or dissatisfied?
Title: Died after 9 months
Review: I've done a lot of soldering, but this project was a nightmare. That, and it's short life would have qualified it for 1 star, but other reviews list "tricks" that may or may not have worked on my Norelco shaver (6863xl), so I gave it 2 stars, just in case. If you want a short term solution to your battery issue, and a challenging do-it-yourself project, this is your battery.
