for Roborock S7 Battery for Roborock S4 S5 S6 S7 S8 S50 S51 S55 Max/MaxV/MaxV Ultra/Pure, Q5 Q6 Q7 E4 E5 E20 E25 C10 T6 T60 T65 T4 Robot Vacuums 14.4V 6700mAh

As described, no problems here.

I've had my roborock S7 for 2 years and the battery isn't lasting as long. My S7 will only clean on max for 31 minutes. I replaced the battery with this one and I just ran it for 80 Mins on max for the very first test. It's a great replacement. I don't think it's better than the original factory battery but now it's lasting as long as the s7 did when it was new.

While this product fit and worked for a while, after a month it quit taking a charge and no longer will power my vacuum. Buy at your own risk.

Extremely easy to install, about a 10 minute job including finding the Youtube videos with instructions. Works great. Appears to have improved the cleaning ability (duration) greater than the original battery. Very satisfied so far.

I recently purchased a slightly cheaper battery from Amazon for my Roborock and it was a mistake. After installing it I had all kinds of problems with my vacuum (I kept getting overheating messages, etc.) I have purchased two of these batteries for two different robots and they both work flawlessly. If you are in the need of a battery, this brand has been reliable.

Fits great - renewed my s5 that was going to charge every 30 minutes.

I have an older model 4 and it was very easy to change out the battery. Just removed the screws on the bottom cover and unplugged the old battery. It took about 2 minutes - it also allowed for me to clean debris accumulated in the unit. Nice to be able to clean with just the initial charge again.

Picked this to replace the original battery because it was having to charge several times before completing a cycle. After having it for a few months, this one is lasting about as long as the old one. I will probably be doing better research before getting the next one.