9000mAh Super Capacity Battery Compatible with iPhone 7/7G, 0 Cycle Li-Polymer Replacement Battery for iPhone 7/7G, with Professional Repair Tool Kit

I feel like I have a brand new phone. The battery I replaced was also a cheap/generic replacement from Amazon, and I suspect it's largely hit or miss with these things, but I can't help but think I've had such a better experience this time because I followed all instructions available, not just the included 'Engrish' printed instructions, but also others online. I watched a few videos & followed the step-by-step on the most prominent home phone repair website. I think I may have been hasty cracking this phone open the first time because I had so much success doing so back in the days of the iPhone 5. i've been told by phone repair professionals that the screens are drastically easier to break now than they used to be. but it may be that the most important instructions to be mindful of, that most of us tend to disregard, is the instructions for "conditioning" a new li-ion battery, and the instructions for getting the most life out of it. They say to immediately charge it to 100% and leave it charging at 100% for 45 minutes, then to fully discharge it (down to 10 or 15%), and repeat this for eight power cycles. After that (and this kinda sucks, but it is what it is) one should avoid ever charging li-ion batteries to 100%. Apparently the best way to drastically extend battery life is to charge back up to approximately 80% (not 100%) and then avoid letting it get below 20%. For the entire life of the battery. if you think about it, you'll notice how quickly it goes from 100% to 80% but then kind of hangs out there. I did some more reading on this and apparently I've been kinda abusive to all my other lithium ion batteries, particularly my 18650 headlamp batteries & my power tool batteries. I don't think the latter is really practical to avoid charging to 100%, but I definitely have not been properly storing my batteries. They should be stored at around 40% charge and then fully charge cycled once every few months.anyway it's kinda interesting all the goofy and weird, counterintuitive problems that failing batteries can cause in everything from smartphones to automobiles. This replacement battery cured a bunch of weird crap my phone was having and has been a big relief.

Much better than recent replacements. I can’t recall how long the original battery lasted but I can say that this batter is performing great right out the box.It lasts around 17 hours with heavy usage and I purposely drained it down and charged it back up to achieve the 3-5 cycles suggested by the manufacturer.It’s not reported as 9000 mah but I think it’s a phone software cap off not the battery. I had the same reporting issue with my previous replacement that was 4500 mah. I’d disregard those numbers.My phone feels normal and last 24hrs easily now without heavy usage. And, around 15-17hrs if I’m on a social media binge ( not saying I do. That was just to do the power cycles). Imma say I won this battle. Very good and improved replacement product.

This is horrible. The so-called “11,000mAh” battery is a complete joke. It discharges like it’s on fire—and I’m not exaggerating.I ran a controlled test with three other 2017 Nintendo Switch units, same model, same conditions. All sat untouched on a table for just 30 minutes.The three legit Switches? Still at 97% battery.This overhyped monstrosity? Dropped to 67%. Just sitting there. Not even turned on.This isn’t just disappointing—it’s deceptive. I swapped back to my original battery, and guess what? That old thing still lasted me 4 hours. This "upgrade"? I’m lucky to squeeze 90 minutes out of it.Amazon, how is this even listed? This is the kind of sketchy product that ruins trust in third-party parts. Ditch the inflated numbers and save yourself the regret.DO. NOT. BUY.

My wife and I both own Samsung S10e phones. We both had rapid discharge issues. Hers worse than mine. I ordered one of these batteries for my phone first. I could use mine as the guinea pig, since I use the phone less than my wife does.After installing the battery in my phone, the discharge rate was slower. And the charge time was reduced. I have had the battery in my phone for over a week, and have not observed any issues.A couple of days ago, I ordered a battery for my wife's phone. After installing it, the charge rate on hers was also faster. And the discharge rate was significantly reduced.I should point out that the original battery on my wife's phone was swollen, which is an indicator of the fact that it was going bad. And it was manufactured on 10/03/2019, making it roughly 5 years and 4.5 months old. Li-Ion batteries don't last indefinitely. Mine was manufactured on 10/01/2019.Finally, the order comes with a cute little set of tools. I am a retired IT tech, so I used my own tools. But for someone who doesn't have tools designed to work with these devices, the tools would be greatly beneficial. I am giving this a 4 instead of a 5 star rating only because I haven't had the batteries installed for a long enough time to determine that they will last. But once I have had the batteries installed for six months, I may come back and modify this review. Either way.