NYI Upgraded 4550mAh HAC-003 Battery Replacement Compatible with Nintendo Switch Console Handhold HAC-001,High Capacity Internal Battery with Installation Tools Kit

Amending once more after receiving replacement. As a note, the issue may not *actually* be the battery (it still could be), but the switch battery indicator incorrectly reading battery life incorrectly, which Nintendo has an article for (solution didn't work for me however). I tested the original NYI battery I received by playing and letting the indicator drop to 1% and seeing how long the battery lasted afterwards, and the battery lasted a total of 3 hours for Mario rpg (not too graphic intense). It's definitely no where near the original battery's life when I first got the switch, but it's better than the Nintendo battery after 8 years/SO many hours of play and changing, lasting an unpredictable 1 hr sometimes, 30 minutes others. I opted not to use the replacement I got because every time you have to change out this stuff/unplug connectors there is more chance of something breaking/bending. I am satisfied with this overall and would buy again.Amending my original review (below) because after charging and playing for about 15 minutes last night, my switch sat in sleep mode. I turned it on at lunchtime today to see if had dropped to 56%, and then when I went to turn it on after work it was completely dead. I charged it again to test it and this time I left it on for 10 minutes. Watched the battery drop rapidly to 56% then a couple minutes later it showed 4%. Ordered a replacement... It will amend my review again if i receive an actual working part.The kit had *almost* everything needed, and the instructions were very easy to follow. As others said and I had read, the adhesive on the original battery was REALLY tough to break. I watched a YouTube video that used isopropyl alcohol and a straw to drip it down the sides of the battery/tilt the switch and get underneath. The plastic tool that came in this kit was a little too thick to get under all sides of the battery, but ended up being able to pry from the bottom of the battery. After getting it out the rest was simple. The battery charged, and so far seems to hold the charge (this is less than 24 hrs after installation) so I will come back and amend my review if I have any issues, but as of now this kit/replacement gets an A+

Great replacement kit and well written directions. Hardest part was getting the battery out. Definitely quality tools. Would recommend.

Clear instructions, came with tools. Easy to do. Original switch was always on the dock for years, when we finally took it off, the battery would jump from 100 to 87 to 67 to 23 and start saying low battery. putting it back on the dock made it still usable. Purchased this battery and the swap out was simple. All issues resolved and it's running portable again with no issues. Important... If your battery status % looks like it drains from 100 to 1 rapidly, you need to sync up the new battery. Follow Nintendo's guide ...aka turn off all sleep modes and drain the battery till switch shuts off, put on dock and charge for 3 hours and then check. Battery should be at 100% and no longer draining or pinging low battery.

The original batter in my Switch was starting to drain very quickly (completely dies when out of the dock in 15-20 mins) so I looked into battery replacement and came across this product. Swapping the battery was straight forward (except for the glued down battery, complete pain but manageable).The best part of this product are the tools and visual instructions. The batter would power up the switch, but never held a charge! Even in docked mode, the battery wouldn't attempt to charge (the charging indicator was on but the battery percentage would never go up).So, requested a new battery due to faulty product. New battery shows up and seems to be holding a charge.........but in less that 24 hrs later, it starts doing the same thing!!! 2 products in the less than one week and they both are faulty out of the box. I put my old battery back into the switch just so I'll have the ability to play something until I figure something out. Probably just eventually replace it. DO NOT WASTE YOUR MONEY OR TIME ON THIS PRODUCT!