Upgraded 5000mAh 14.4v Li-ion Battery for Ecovacs Deebot N79 N79S N79W deebot 500 DN622 DN622.11 Replacement for Eufy RoboVac 11 11C 11S MAX 12 15C 15T 25C 30 30C 35C G10 R500+ Etc. Robot Vacuum

Old model. Battery died. Easy to replace (Once I looked up on YouTube to be sure) and it works.

Absolutely fantastic upgrade! My Eufy robot vacuum was struggling to finish even a small cleaning run, but after installing this replacement battery, it’s like the thing is brand new again. The installation was quick and painless, and the improvement was immediate. The runtime is outstanding—my vacuum now cleans the entire house without slowing down, and it docks with plenty of power left. It charges reliably, holds a strong charge, and has completely restored the performance I missed. For the price, this battery is an incredible value and an easy fix that brings your robot right back to life. Highly recommend it to anyone whose Eufy is starting to show its age. This battery makes a night-and-day difference!

Easy install, great battery life.

75 mins max runtime instead of the OEM’s 90 minutes. My robovac does not auto return to charge station with this new battery! Other than these two issues, this battery worked well for the $!

Works well as the replacement for the original. The upgraded 5000 should give it a longer live between charges. Helps do more of the floor.

I have a Eufy 15C Max. After running it for over a year, it started shutting off before heading home to charge. I came to Amazon to find a cheaper replacement battery. I purchased this battery because it's advertised as a higher capacity than the factory Eufy battery. The battery powered the vacuum for a little while, but did not solve my issue with the vacuum turning off before heading home. The runtime was not any longer than the original battery. So, I figured my vacuum was a dud. That's when I bought a new Eufy G30 Edge to replace the old 15C. Now, my G30 started doing the same thing where it would shut off before heading home to charge. Thinking that there's no way I have the same issue with two Eufy vacuums, I decided to also try this battery in the newer vacuum. The battery has not been used very often, but it is 1.5 years old now. So, my expectations were low. With that said, it did not solve the problem with the G30. It only ran for 39 mins before powering off. Finally, I decided to buy the official Eufy battery. I found a two-pack on Amazon for a small amount more per battery than these random replacement batteries. Both vacuums are back to running for their normal runtime and return home for charging. DO NOT buy these random replacement batteries. They will not provide the longevity or runtime of the factory batteries. You're just throwing money away. Spend a little extra on the official batteries. They last longer and work better.

Found the robot vac at goodwill for 10 dollars. Had a bad battery. Bought this and it works like new.

Great product Very reasonable price