Very fast shipping from Skroutz..
It worked right away without charging even though it was 70% charged.
Very satisfied.

The J5 2016 mobile phone. So no matter how many batteries I get, they work well at first and then run out quickly. Especially when they are below 30 percent. One solution is to have 2-3 batteries in the drawer and alternate their use. A temporary solution until changing the device

It is not like when it was new, but it is much better than the old one and does not shut down abruptly... I think if you do not have the financial ability for a new smartphone, it is worth buying it.

I bought 1 Samsung EB-BJ510CBE battery (Galaxy J5 2016) 3100mAh and it came in a well-packaged box. The battery had black stickers on top of the Samsung logo, and I removed the sticker from one side that touches the phone to ensure a better fit and proper attachment without protruding from the edge. The store told me it is authentic but in bulk packaging. There is no other indication that it is Samsung apart from the logo below the stickers and on both sides of the battery. The battery has been working flawlessly since 28-12-2021 and I have been using it extensively. It is a value for money purchase that is worth it, and you don't throw away a Samsung phone!!!

From the moment the initial battery dies, obviously the next ones will not have the same performance, but they are decent and get the job done. After a year and a half, I think it needs to be replaced because lately it starts to drain quite quickly when you have data open. I am satisfied.

I bought it a few days ago and it suddenly shuts down while showing that the battery is charged at 60%. I used it for a few days hoping that charging it a few times would improve it, but nothing. Ended up putting the old battery back in. Very bad product...

I bought it, it didn't charge at all. It said that I didn't have a genuine charger, but I did and they replaced it for me. The same thing happened with the second one, so I wasted the 12 euros I spent.

While it was functioning relatively well for about 5 months, it started to discharge faster and in the end, I had to throw it away because it completely "swelled up"

Do not make the mistake of buying it. This specific battery does not work at all and is even worse than the original one, which I had for 3 years.

The mobile phone would turn off on its own every now and then. As soon as I replaced the battery with this one, it became like new. It hasn't had the slightest problem. It has been working perfectly for 6 months now and the battery lasts as long as when I first bought it (2016). I don't understand why there are some bad reviews. Maybe I was lucky and simply got a very good battery.

It has been working fine for about a month now. So far, I haven't noticed any difference compared to the factory battery that came with the phone when I bought it.

This battery is so-so because it drains from 30 to 100, when it's at a certain number, for example at 50, it uses it differently. Meaning, from 50 it goes to 48 without going to 49 first, and it doesn't last for many hours, so I recommend not getting this battery.

Second battery I buy for Samsung phone (the other one was for a different model) because the factory one, after 5 years, has a much shorter duration and this one turned out to be very bad. Worse performance than the factory one, which after 5 years is doing better than the new one. You charge it and as soon as you remove the charger, it goes straight to 95% and in 2-3 hours it's empty and the phone shuts down. Probably Samsung wants us to change the whole device as soon as the battery starts to deteriorate, there is no other explanation

It didn't even last a month and it's already garbage (I thought it might improve over time)... I had the old one for three years and because it couldn't last the day and took a long time to charge, I decided to get a new one... Same terrible and even worse... Stay away... I'm wearing the old one again

After almost 2 years of use, I can say that I am quite satisfied. When it reaches about 15%, the battery discharges very quickly and the phone can shut down, but overall I did not charge it correctly (I left it charging all night and unplugged it in the morning). However, I have no complaints, it lasted me a whole day with a lot of use (browsing-games), Wi-Fi constantly on, and several hours of data usage.

Very bad product, worst in performance and durability.
Battery lasted only 3 months and broke...
From 100% in the first month, it would drop to 10%, and in the second month, from 25% it suddenly showed 15%, and then it would turn off after 1 minute. In the third month, from 45% it suddenly showed 13% without any gradual decrease, and it would turn off in a few seconds.... The worst thing I have ever seen....

I bought a new Demek.... I used an old battery before. The new Demek closes at 20% battery.

The durability over time will determine if it deserves the fifth star.
The protective film of the poles must be removed before operation, otherwise the battery appears dead (I had to go back to the store because I hadn't noticed it).