Replacement Battery for Eufy RoboVac 11, 11S, 30, 30C, 15C, 15T, 12, 35C, 15C MAX, for Ecovacs Deebot N79S, 500, N79, DN622, for Tesvor X500 Robot Vacuum Cleaners 14.4V 3000mAh

Worked very well. Installed in my vacuum , charged, and immediately went to working that evening. Great replacement battery.

After about two years, my Eufy robotic vacuum stopped working. The charging light was red and stayed on. The vacuum emitted a constant beeping noise. None of the troubleshooting solutions was applicable. I cleaned it well and replaced all parts. It still did not work. I purchased this replacement battery. It was easy to install. The vacuum works like new.

The battery works well. Good value for money. Fast charge speed

Eufy 30C Max stopped working after 4 years of no issues. It would charge on the dock (blinking orange light) for a minute and then the indicator light would turn red and stop blinking. It was easy to switch out the battery. Glad it came with the screw driver given the size. Great value for a several hundred dollar vacuum. Hoping it holds up for a good while yet

Rechargeable batteries are not diamonds and are not forever! Replacing the battery is pretty straightforward. First, turn off the battery power switch, which on mine is red and under a flexible clear plastic cover near the roller brush.My Eufy 30C involved removing 2 screws from the battery compartment, lifting out and disconnecting the old battery. I have big hands and the plug receptacle is at the bottom and has a small tab that must be pressed to remove the battery cable from the machine. Disconnecting the battery is the hardest part for me because there is a release tab that must be pressed to release the battery.Snap the new battery's cable where you disconnected the old one. Replace the cover and screws put new brushes on if needed and voila... new vacuum.

My Eufy robovac died several years ago, after I left it uncharged for months after moving. Popped in this new battery (an easy 5 minute replacement), let it charge for 24 hours, working robovac! Battery life seems about equivalent to the OEM batt, from what I can remember.

I purchased the battery three months ago for my 5-year-old Eufy Robovac. It had been working well until today when suddenly it started showing a solid red light. I called Eufy and they told me that was an indication that the battery was bad.

Battery capacity was sligtly larger than original, but worked great.