21800mAh Super Capacity Battery Compatible with iPhone 11 Pro Max, 0 Cycle Li-Polymer Replacement Battery for iPhone 11 Pro Max, with Professional Repair Tool Kit

Definitely a good battery. I have an IPhone XR, so the 8 year old battery it came with wasn’t doing well. This newer one works a lot better When i replaced it, the old battery was at 74% capacity. When it’s below 80%, it makes a lot of apps just freeze or suddenly stop working for a bit. In my case, it was mostly Google maps while I was using it to get around. I only replaced it a few hours ago and I’m already noticing a huge difference. All my apps work, and it appears to be charging faster. Of course, Apple does have a notification now when I open the battery health saying it’s not an “official Apple battery” which doesn’t bother me. I’d rather buy the same part for $30 versus $90 cause it has the Apple logo on it. Just something to keep in mind if it will bother you, as this will happen with any Apple tech when you don’t install an official Apple part. For anyone who hasn’t done this before, you will need a heat gun of some kind (some other reviewers used hair dryers, I used a heat gun from a mechanic friend) and a thin piece of flat metal to get the screen off. Absolutely take your time with this, cause if you don’t, you will break the screen, heat gun or not. There are also cables behind your screen that connects to the motherboard so be careful of those when pulling it off. Also, if you have it, use some rubbing alcohol and q-tips. There is some pretty serious glue holding the battery in place, putting the q-tips soaked in the alcohol along the edge will help soften the glue/degrade it so it will be easier to pop the older battery out. Admittedly, you could technically use the heat gun for this as well, but I’d advise against it since having it directly on any electronic battery can end badly. My only complaint about this product, is the cable that connects the battery to the motherboard is about 1-2mm too long. This makes it difficult to get in, but the seller does provide some really good metal tweezers that will help with this a lot. Overall, it’s a good product. Also cause I saw another review mention it, any battery you get for a replacement part will be charged around 50%. This is just a safety/law thing in the states. If they keep them fully charged they are more likely to get damaged from lack of use while they are in storage/inventory. Doesn’t just apply to phones, but laptops and various other lithium batteries. Also, for anyone getting rid of the old battery, staples (at the time of writing this review) will take it and recycle it for free as part of their tech recycling program. This includes bloated batteries (they just need to put those in a separate bin due to the fire hazard, so make sure to give it directly to a staff member if it’s bloated). The daily limit in terms of tech recycling at staples is 20 items and you can get points for it that go towards coupons (if your into that). Highly recommend making sure that any lithium battery is disposed of properly due to the chemicals and fire hazard the old ones can possess

Price was right and the battery arrived with everything needed to do the replacement, and then some. I think I only used about a third of the tools that were included. The battery was about half charged out of the box and has taken a full charge and has worked great since it was installed about a week ago.

Excellent battery replacement for my N3DS XL (SNES Version). I loved the price vs. quality after use it for 2 weeks and I can say that I'm very satisfied with it. The installation is extremely simple to perform since you only need to remove the back cover (don't forget to remove the stylus and any games you have prior removing the cover). The size of the battery shown no issues and it was a perfect fit. The tool kit was perfect as I only needed 1 of the screwdrivers and keep the others for other projects. As recommended by the website, you must perform 3 to 5 complete charge and discharge cycles, and let me tell you that the discharge was a looong because even when the red light started bliking indicating that the battery was almost out, it took around 1hr to 1.5hrs to turn itself off (I got tired of playing before that happened, but left it in the gameplay loop). I used the battery by playing MK7 with full brightness, medium sound volume and the wifi on so it would drain the battery faster and still gave me a good 6-7 hours practically none stop (I didn't closed the console to avoid having it in standby). Overall, this battery's functionality delivers what is advertised on the detail page. Great price, great fit, and definitely a future next purchases.

I've changed a number of iPhone batteries, always with "amazon special" chinese generic batteries. This is the first time I"ve encountered a problem. This particular phone had never been opened before so I was replacing the original factory OEM battery. This replacement battery just wouldn't click in and engage the connector. After literally hundreds of times trying to get it to connect I finally got a connection, carefully closed the phone up and started using it. It worked fine for a week and then went dark and I cannot get it to connect and work again at all. I'm sure all of these generic parts come off the same assembly line but the quality control to allow this one into the store was a poor implementation. It's too late to return it so I'm going to take it to a local repair shop, throwing in the towel for the first time on multiple iPhone repairs to let somebody with more experience tell me if the system board is screwed up or just a bad battery. Either way there is no chance in the world that I'll get them to continue to use this battery - it will either be a reputable brand battery or the phone is dead as a result of trying this one. I had the part sitting on the shelf for a few months waiting for a time when I could afford to have my phone down for the weekend so it's too late to return it. Other than the bad connector the rest of the battery seemed what you would expect. During the week that it worked battery life was excellent. The adhesive that came with it was very unusual, never seen this style, and no instructions about how to adhere. I tried to use it and it didn't really stick well while also pulling up the thin membrane covering the wireless charging coil when I removed it during one of the countless attempts to get it to work.

My iphone SE is very old. I was not sure if this battery was going to be good or not. Well, for the price I took the plunge. The battery came with all the tools you need to install the battery yourself. I usually can fix almost anything, but for some reason I just wanted to bring it to a store and have them install it. I love my old Iphone SE first gen and I did not want to goof it up. I brought it to a Walmart fix it store. The tech installed it in a few minutes while I shopped. I have been following the charging instructions, (20%_80%) and it just seems to work pretty good. I listened to music for an hour or so, then some Youtube. Made a few phone calls and scrolled a bit. Then talked on it for 3 hours again at night and then did some more searches. I still had 35% left. That might be prettey good for such a tiny phone and battery. This review is 2 weeks after the install and it seems to be pretty stable so far. Doing some reaserch I find that most of these older SE iphone come with 1600-1800 mAh batteries. So it never made sense that this one is 19900mAh. If that were true it should run a few days with out charging. I guess the advertisement really means 1990 mAh. Who knows. But it does last for the day like a new phone. =KL=

This was one of the simpler phone battery replacements I've had to do, and this product makes it as easy as possible with the iphone se. After removing the old battery, the installation of the new one tool less than 10 minutes. Everything is included for the installation, including new adhesive for the battery. A phone that was lasting about 4 hours a day is now at 97% after 24 hours of the new battery. Big improvement!

Exceptionally good battery life. Battery lasts easily a full day with moderate to high screen time / YouTube streaming usage, with multiple background apps like multiple email accounts etc syncing in the background. I am pleased with this purchase and hoping it lasts for the next couple of years. It has definitely extended the life of my iPhone, with full performance.

This replacement battery worked good easy to install, good quality and size perfect fit.