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

Best choice! Great quality! Perfect fit easy to install and phone battery lasts a long time. Will recommend

These things last forever, they seem to have issues charging and I don't know if that's just because of my controller but it takes very specific cables to charge my controller now (chromebook chargers, and other high power chargers). My girlfriend's controller does not have this issue so I do not know the cause, just wanted to note it.

I used the kit to replace the battery on my old iPhone 6 because the OEM battery somewhat exploded to the point the front of the phone buckled! For around $10 I could see how difficult it is to replace a battery in the phone. It turns out it is not very difficult at all! The instructions with this battery are pretty bad. I can't understand with today's technology of translation, and also willing people to translate, that these instructions are never very good and often misspelled. On to the actual kit, this worked out pretty well overall. Found a good video online that explains exactly what you need to do to take out the old battery and put in the new one. The only issue I had with this kit is there are about three parts that are unexplained on how you would use it and they are all in my second photo. Possibly the blue thing is used to wedge off something I'm not sure and the smaller blue cellophane thing I am sure is used to glue down the new battery, but I didn't need that since the old glue stayed in place. The larger cellophane I believe is used to put a seal around your phone to seal it back together. I didn't see a seal when I opened up the phone so I figured it has worked this far this way, why change it. Other than that, and the battery installed fine and is charging up perfectly. So my advice is if you have a phone that has a bad battery, take a chance and try this out.

Do not buy. I bought the iPhone 14 Pro version of this kit and the included tools were useless. The phone uses a P2 pentalobe 0.8 screwdriver, but the kit only came with Phillips heads, so it couldn’t even open the device. I ended up buying proper tools separately, including a heat gun, and followed an iFixit video because the manual included here is basically useless. The replacement itself worked fine. After installing the battery, the phone showed the expected “non-genuine battery” warning, which I already knew would happen. The battery reported 100% health but arrived at 70% charge. I left it charging overnight and woke up to 2%. So the phone doesn’t charge this battery and it also drained from 70% to 2% in about 8 hours while plugged in. Returning it.

It standby for 4 days with 20% remaining. There is a trick to install. I snapped in the battery with finger and kept for a day to check without closing the cover. It drained in 24 hours. Then, I pressed all connections firmly with the plastic tool and saw the battery declined slowly. Obviously, loose connection burnt power quickly.

Well, the installation is not easy. My husband fixes a lot of techy stuff but this was a challenge. It took about 2 hours, a blow dryer and was pretty stressful. But day 2 with the new battery and it is holding a charge better than my old battery!

Great product. For as little as $30 brought my iphone back to life. The replacement process is not extremely complicated, but you definitely need an youtube video for instructions and visualization otherwise it would be easy to mess it up. Battery fits perfectly and plastic film with a new screen glue lines up very well.

La batterie de ma switch était morte, je l’ai remplacé avec cette batterie et pour le moment tout fonctionne bien facile à installer

Working great for over 3 months so far. Works well

Pésima calidad en la pila y herramientas, la pila no funciona correctamente y las herramientas que venían no eran del tamaño de los tornillos.

It’s been months and all is ok. Have steady hands, no distractions. White background for repair. Do a YouTube and make sure it’s for your phone. Easy to do. Once you’ve done one, you’ll never use service again. Comes with all the tools (which I’ve used for other repairs requiring tiny tools)

This kit and replacement batter did the trick. Used it to replace the batter on my Nintendo Switch Lite. I'll admit that it was really tricky getting the original battery out, as it's completely glued to the console, but the kit itself couldn't have helped with that. Once I had the new battery in my Switch is back to running for multiple hours which I'm very happy about.