I did use it for quite some days and I can´t complain about anything. It does what it needs to do.
Please not that the charger does alsways charge two bateries at the same time, so try to use always two bateries with the same charge, to avoid problems.
I can recomend this product! Especially the including 4*AA Bateries do make the bundle really affordable.
High quality product, for a good price.
https://www.amazon.de/EBL-Schnellladegerät-Ladegerät-Aufladung-Unterwegs/dp/B07867L5SG