CITYORK 14.4V 6500mAh Replacement Battery for Xiaomi Mijia Roborock S5 S4 S6 ...

Put this in a Roborock S5 and it wouldn't boot up. I figured it just needed to charge, even though I thought it should have at least enough juice to turn on. I expected to have to charge it before actually vacuuming with it.Anyway, I threw it on the charger, and the vacuum booted up. It was reporting a 100% battery status. Weird, I thought... I let it sit for a bit, then tried to start the vacuum. As soon as it left the dock, it just powered off completely.I guess this battery is defective. Returning it and trying another one somewhere else.

My vacuum died and my first through was to replace. I gave the battery replacement a shot and the vacuum is as good as new now!

I've ordered a few batteries from other brands like this. Other brands are listed as 6800mah not 6500mah so this ones a lower capacity. Will still function and do the job though.

This is the correct size and power for the units listed in the description, and works as expected. I appreciate that the power rating (6500mAh) appears to be accurate and honest. Some replacement batteries falsely exaggerate these numbers to motivate sales.