K&F Concept 3-Pack NP-FZ100 Battery and Upgraded LCD Battery Charger Compatible with Sony A7iii, A7iv, A7C, FX3, FX30, A9, A6600, A6700, ZV-E1, ZV-E10ii, Alpha 9, A9S, A7R III, A7R IV, A7RV, 2280mAh

Customers find the battery charger works well like the original Sony model and appreciate its quick charging speed and ability to charge multiple batteries at once. The product receives positive feedback for its quality and value, with one customer noting it's a compelling alternative to authentic Sony batteries. The battery life receives mixed reviews - while some say they hold their charge well, others report they fail after a few months. Compatibility is also mixed, with some customers reporting issues.