Futurebatt 4000mAh 14.4V Replacement Battery for Ecovacs for Deebot N79 N79S DN622 Eufy RoboVac 11 11S 11S MAX 12 15C 15C-MAX 15T 30 30C 30MAX 35C Shark RV750 RV720 RV700 Battery Pack

Was a perfect replacement and works well after charging up

Exact fit. Works well.

I've had one of those vacuums for several years and the battery finally started going out on our "Deebot" vacuum. It would just beep and beep all the time and would only run for like 10 min. I bought this battery in hopes it would help me to salvage the vacuum. It was easy to install, once I got it charged up, it's been awesome. It's like my vacuum is brand new again! It will now run for around 1.5-2 hours before needing a charge, which is incredible. This one has a larger capacity than the oem battery as well. Would not hesitate if I had to buy this battery again.

Exactly what I needed for the battery replacement for my Ecovac DeeBot vacuum. It's working like it's brand new once again. This was probably half the cost of my last battery from a local battery store. Considering I run it every single day itis lasting quite a long time.

Issue turned out to be with the vacuum brush. The battery is still working fine.

My Eufy RoboVac 11S (we call "RoBob") is over 5 years old and the battery has finally lost charge to the point that RoBob would run only about 5 minutes before having to return to its changing station. I ordered this Futurebatt 4000mAh 14.4V Replacement Battery after I made sure that it would work with my RoBob 11S. It was easy to remove the two screws holding the battery cover plate, pull on the tape tabs and disconnect the cable from the coupling. Once the old battery was removed, I simply reversed the process and made sure the RoBob sat on its charger until the light turned blue. The next morning, when I cleaned RoBob, it collected a large amount of "dust bunnies" and other debris. so I know that the new battery is exactly what it needed to clean up!

My EUFY vacuum gets a workout out every day and has a lot of space to clean. The OEM battery was good, but I needed something a little better in terms of run time. I found a very reasonably priced higher milliampere battery on Amazon and that the trick. A good vacuum is now great. Because of the new batteries high milliamperage, my EUFY now runs a very long time before it needs to recharge. The only issue, and it is very minor, is that the battery is fatter than the original and it takes a little bit of finesse to get it into the battery storage well of the vacuum, but this is a very small issue for such a great battery.

I thought my Deebot vacuum that sat in storage for 3 years was done for. This replacement got it back up and running!