162mAh SP282024 Battery Replacement Compatible with Fitbit Sense 2 Fitness Smartwatch FB521

A very nice kit with a good battery.

Worked on my fitbit sense 2!!! My original watch battery was draining quick, most times within a couple of hours. It all started when fitbit said there is an update for my sense 2 and the update would never finish because the battery was draining. Suspecting it was a battery problem, I took a chance with this item rather than buying a new watch. The hardest part was prying off the screen. You need to get the 1mm pry tool, which I did not have originally and I cracked the screen. I ordered a replacement screen separately, which worked too! Anyway, the second hardest part was ensuring this battery was properly seated on to the connector. I used my finger feel because the ribbon connector is too small to confirm it was seated using just the plastic tools. Watch the whole process on youtube. I recommend having a lighted magnifying glass because parts are very small. I've had the watch working for a few weeks now and it takes several days to drain the battery just like when it was new.

Screwdriver did not fit screws -unable to remove battery on Sense 2 have to buy new one for more money and buy glue.

All the tools and materials were provided. But it replace of the fit bit was too much for me. So bought a new fit bit.

Tools are worthless but the battery works good.

So far, so good for one week. The battery holds the charge well. Taking one star off, for the philips screw driver being too big for the screwes. If you don't have your own, you won't be able to complete the job. I managed to angle my own mini flat screwdriver to make it work, but that's 50/50 luck/skill. The screws are as small as an ant's head. If you think your phone fitting tools will work... no. This is a watch size, a magnitude smaller. The other star-shaped driver took some time to get the proper angle, but did the job eventually. Replacement takes about 2h, done carefully. You need good eyes, a solid magnifying glass, and steady hands. It's not that hard. There is a website with a video and a photo-based guide on how to do it. The hardest part is not to lose the **extremely** tiny screws. I used a hair dryer to loosen the old glue instead of a heat gun. Note: the glue is not included.

This battery works fine and the whole toolkit with it

Tricky to install and ordered glue to reseal everything but so far working better than the original! Getting about a week between charges!