Excellent recipe from Sony with these specific batteries, they work for all the alpha models, have satisfactory duration at half the price of the regular ones. Their capacity does not decrease so easily with the charging cycles, so for me, they are just fine. I have batteries from 2019 that work perfectly with minimal difference from the latest ones I've bought, and I have many, over 15, because I have almost the entire alpha series along with the FX3,6.

Like the original Sony battery, there is nothing that can compare, a bit expensive but it is the best.

Although expensive, it is better than the third-party ones because it has a longer battery life throughout the day, works with the machine, and shows you the battery percentage instead of lines. Over time, it still lasts longer than the others.