Spent time to find the most trustworthy 3rd party replacement battery for my Sony NEX camera. From Hong Kong forums, 品胜 (Pisen) got the best feedback, followed by PowerSmart. To my surprise, I went into more than half of the relevant stores in Ap Liu Street and couldn’t find Pisen. Most of them sold M***X (which always exaggerates its capacity), and a few of them had PowerSmart. Eventually I bought a Pisen battery elsewhere, and it has been charged by the Sony charger successfully.