The product is not defective, it just doesn't stop charging. It has on the packaging how many hours you should leave the batteries to charge based on their stated capacity.... I bought it for 7 euros together with the batteries, so for 7 euros I consider it somewhat worth it.... If you want automatic charging, it would be good to get a more expensive charger after researching from multiple sources about its features, if it has automatic charging stop when it is complete.

I have exactly the same to add as the friend above. I also had the doubt if I came across a faulty one, but in the end it doesn't charge correctly and the LEDs never turn off, even after 30 hours plugged in. Unfortunately, the batteries didn't seem useful to me either, as they didn't charge in another charger. Overall, a product for the trash.

Mine didn't charge properly. Also, I don't know why the LEDs never turned off to show me that we had a full charge even after a whole night. I probably got a defective one. In the end, I only kept the batteries from the package.