14.4V 6400mAh PA61 Vacuum Battery Replacement for Eufy RoboVac X8, RoboVac X8 T226X, RoboVac X8 Hybrid White, RoboVac X8 Pro, RoboVac X8 Pro SES Robot Vacuum

Perfect fit, easy assemble!

The battery terminal/wiring protrudes from the battery case causing impingement on the battery box. The battery had to be forcefully inserted into the Eufy X-8 vac battery box, slightly deforming the wiring and terminal. My concern of course is that causing a short circuit with a lithium battery is not a good idea. I’ll monitor and revise my review if no issues after a week or so. But for now, a bit of a concern. Perhaps, this battery is an anomaly.

It worked for two weeks and that was it. I tried different x8 hybrids and different charging bases. Don’t buy it.

It a good stuff.! I am happy.!

This comes with a little screwdriver and is very easy to install. The instructions have no pictures, just refer to the device as your "power tool" and tell you to make sure it is off before you begin... not exactly anything specific to your model, but the process really is self-explanatory; turn off, unscrew, pop the old battery out, pop the new one in, charge- and enjoy. The battery pack itself feels firm and well made, and the runtime in my tests has been exactly as stated. I am perfectly satisfied and glad I chose this.

This is a good battery. its been working fine for me. i have a eufy robot vacuum/mop and this battery fits and works.

It wants to fit but the wires come out in the wrong spot. I could make it fit but not risking pinching wires or cutting the blue plastic to route the wires correctly. plug did plug in but I didn't turn it on. Screw driver was nice touch but didn't come with the blue brush in the pictures.

I used this in my Eufy X8, which had a battery so deteriorated that it wouldn't even auto return to base during a cleaning to recharge. The repair was very easy and straightforward; the battery fit into the compartment tightly, but it definitely fit in my robot. I feel confident it won't budge with the clearance that it had during installation. The battery came half-charged and immediately took a charge well and without any issues. I don't see any problems with overheating so far, and my robot has resumed auto-return to base charging during a house clean as needed with the battery replacement. To be honest, though, the battery has been so good that I haven't seen the robot need to return to base for charging. The capacity seems to be very much improved with this replacement. I think this is worth the money for what it offers, and the repair process is so easy that it's a no brainer to do for quality of life.