XYIRMCYF 19999mAh Super Capacity Battery Compatible with iPhone 15, 0 Cycle Li-Polymer Replacement Battery for iPhone 15, with Professional Repair Tool Kit

The only problem with this battery is that it doesn't meet my expectations for capacity. I initially thought it would have double the mAh of the original Samsung Galaxy battery, but it turned out to be less. After a few uses, the original battery in my phone, which I've used for over six years, has degraded from lasting about six hours to around three or four hours. I hoped the new 10,000 mAh battery would last approximately eight hours based on simple calculations, but that’s not the case. Charging the battery to around 85% provides the best protection, but even when fully charged to 100%, it only lasts about six to seven hours instead of the expected twelve hours. This shorter lifespan is disappointing, but understandable given that it’s a cheaper battery. The charging speed is satisfactory. However, it's important to avoid letting the battery drain to zero or overcharging it, as these practices can cause micro-damages that reduce the battery's duration, lifespan, and capacity.

UPDATE 06-07-26 SWELLING AFTER ONLY 3 MONTHS. SO MUCH SWELLING THAT THE SCREEN KEEPS POPPING OUT. DO NOT RECOMMEND. DOWNGRADED TO 1 STAR Good replacement battery for the money. Fit was quite tight. Just barely fit in the space for it. It also seemed a slightly thicker than the factory battery. At first I was concerned that it might keep the screen from fitting all the way down, but it ended up working just fine. I broke the screen when trying to get it off (my fault - no fault of this battery manufacturer) Ordered a replacement screen, and put it all back together. So far, it's charging fine, and seems to last a while. Worth noting: The cable that connects to the main board was just slightly too long, so I had to adjust where the flex cable bent. But worked out fine. Overall, would buy again. Note: I also got this same battery in a different variant for my daughter's iPhone 14. That one was great. Would give it 5 stars. It won't let me do a separate review for that one.

Great replacement battery. Lasts a long time

This is such a good battery replacement for the new 2ds xl so now my battery last way longer then it did before

Nice, helpful tools, wrong battery connector. Tools included everything to remove the screen and battery. Unfortunately the connector didn't fit. The original battery connector is longer than this replacement as seen in photo.

RED AND BLACK CAME BACKWARDS! Unfortunately when I got to the old battery I realized the new one had the black and red swapped positions in the connector. Luckily I was able to use a safety pin to depin and repin it correctly, once done it seems to work great so far

Not sure what the bad battery rate is, but I got a dud. After installing it, I tried charging it for days with a variety of USB C cords, including the Nintendo original plug, and the Switch Lite never started up. The press-hold power button and other button pressing tactics failed to work. I put the original battery back in and it started up on first press of the power button.

Installed this after my iPhone 12 battery hit 70% battery health. I was considering buying a new phone, but opted for this instead. The installation is pretty simple (for someone who knows how to take apart phones already). The difference of battery life after installation was night and day. Instead of the phone usually needing charged around the late afternoon, it can last all day and then some. If you are a DIYer, this is definitely a more cost-effective option than getting your battery replaced by Apple.

Good battery life, easy to install.

(almost) easy to install using the tools included in the bundle. The only tricky part (thanks to apple) it so remove the battery, which is unconveniently sticked to the back of the phone case. A couple of videos and a few tries did the trick. The tools also helped to finish that part.

Good product, charges and works as it should.

I used this product for my phone, it works well

Very good product.