Bests & Worsts Reviews from Amazon

Clear advice for buying a new battery: simple. Check to see whether the manufacturer, Samsung has it in stock and is still making it. If the company is still making it, buy it direct from Samsung, or you can play battery roulette with the hundreds of "genuine" sellers. Some of these--but very few--are reputable. Or buy an Anker. It will be just as good and you know it will be real. If you look on the website of Samsung and your Note 4, S5 or whatever battery, you will often see, like the Note 4, that the battery is no longer being made: the simple truth is that if you buy one online it will be one of the following: *old,* a fake, refurbished, or all three. Mine was a fake, so I returned it and bought an Anker. Samsung is not going to make one more battery just for you, truth. There's ways to tell if a battery is real, and you can waste your time doing that. You can use a scale to weigh it (my Anker battery weighs half a gram more than the stock battery and 4 grams more than the fake one). But the fact remains that Samsung stops making these batteries (bad Samsung!) and there's no point in buying one that is old, fake or refurbished. It won't perform as well. The good news is you can get a nice, fresh one and keep your phone for a few more years and reduce your environmental footprint. A bit. Don't forget to recycle the old one properly. I tested the Anker for the Note 4, and that's the one you want. And Samsung, end the practice of discontinuing making batteries after two years: it's bad for the environment and it is bad policy. Put a QR code on the battery to show how and where to recycle it.