Galaxy S21 Ultra Battery,[5000mAh] (New Upgraded) 4.45V Li-Polymer Replacement Battery EB-BG998ABY for Galaxy S21 Ultra BG988ABY SM-G988 G988B with Full Replacement Kits

My battery had expanded so replacing it myself was the only reasonably priced option available. Removing the back case was straightforward enough as was removing a few screws to access the battery. Swapping out the old onr for the new presented little hassle and it charged fine and certainly has better battery life than I remembered the last one in the past year of using the phone on and off.I'd definitely recommend this to anyone in need of a replacement battery for an S21 without breaking the bank.

I have not fitted this battery yet so my review is only based on a visual inspection. I will update once fitted.This comes in a nice box that includes the tools needed to change the battery. As it advises on the box you can find youtube videos showing you how to fit this or you can take it to a repair shop.I have had some difficulty with the batteries for other phones and found some are not very good and just die after a short period.I did notice that on some major chinese sites and also on Amazon, there are cheaper options available. Some of these have much longer delivery periods though. The difficulty when buying batteries for phones is that there is no way of knowing how good the battery is, really not until it has been in the phone for a year.This battery does not seem to have a date stamp on it, unless it is written in Chinese and honestly I did not think that was the best sign.There are sites that offer genuine Samsung replacement batteries.

Battery getting hot and chanrg finish quickly

Excellent product great quality

My Phone was having trouble getting through the day on a single charge. The battery, which had been a dependable, was now requiring continuous charing. Because the kit came with instructions, changing the battery was a simple process. My phone seems refreshed after a few weeks of the transplant. I can now use my device without worrying about the battery running out. If you feel like your Phone needs a little extra juice, this replacement battery could be what it needs. Everything required for a complete and safe replacement was included in the kit too. No extra tools required. Fully recommend to revive your old phone.