K&F used to be a budget brand that no one really knew about but now they have really upped their game! I own several of their products. From batteries to tripods and even their various filters. All of them I would consider premium products. The battery charger feels pretty generic like most of them out there. Smallrig, neewer, etc. What makes it different is the 3 charge slots which makes it convenient. I typically carry around 10 batteries with me to film weddings and having a charger that can do this amount of batteries at a time is great! One thing that ticked me off about Sony is they released newer firmware that actually removed the percentage on the batteries if they are not from Sony which left you guessing what percentage they were and you had to rely on only the battery indicator like old school cellphones. So even ones that I bought before that stated they were compatible and gave no errors, unfortunately now do. These batteries however do not give you the warning and retain the percentage for now at least before Sony decides they want to be greedy again. Highly recommend this brand. You won't regret it especially for the price.