New Upgraded Battery for Galaxy S21 Ultra, EB-BG998ABY Replacement Battery Compatible with Samsung Galaxy S21 Ultra, with Repair Tools & Instruction

It has all the same functions and battery life as a new OEM battery. It came with all the correct tools and instructions. Everything fit perfect.

Appears to be a really good kit with instructions however I received it with the box open and parts scattered in a larger damaged box with other items and couldn't find all the parts.

The kit was very nice with necessary tools and adhesive tape to reattach the rear cove. However, the battery, after two charges, will not charge beyond 99%. I don't really see better performance than the 3 year old battery I replaced. Price was good.

I used this kit to replace my cellphone battery and it had all the tools and the battery to compete the job. Well worth the peice.

I would have given this 5 stars except for two items:1. Half the instructions were missing. They went up to the point of battery removal, but the battery installation and use of the other kit items were not explained. This is important and QC should be involved to assure that full instructions go out with every kit.2. The splash proof seal was not correct for my phone so I just used the sealant to secure the case, but didn't use the plastic sheet that would make it splash proof.

The kit is more than adequate. Despite the difficulty of disassembly, the tools included were useful. The pre-cut adhesive is really great and easy to install.The only one lacking here is the less accurate/lacking instruction.

It Works I just installed today.

So far so good. Thank you for having it low to no power for install