6400mAh Battery Compatible with Ecovacs Deebot T5 T8 T8+ T9 T9+ Deebot Ozmo 950 T10 T9 DX65 DX93 DX96 X1 Omni X1 Turbo X1 Plus DLX11-21/61 DBX11-11/21 Vacuum Cleaner S10-LI-144-5200

The price is very reasonable. I installed this as a replacement battery for my Slinger Tennis Ball Machine and it works very well! It charges fast and the battery charge holds for three or four sessions on my tennis machine. The installation was very easy, as I simply followed a video available on Youtube. It fits well inside the Slinger battery case with a little modification. I will buy this again when the time comes for a new battery!

Works as intended, no issues installing - fit my X8 perfectly - and with no problems during operation at all. Battery life seems improved from base model so I'm satisfied.

The battery doesn't seem to hold charge and definitely isn't 6400 MAH. It drains within 20 mins while the OEM had a run time of over 60 mins while just being 4800 mah. Worst part is that it takes 1 week to charge back to 99%. Such a disappointment. I followed manufacturer instructions to activate the battery and then discharge to about 20% and then changed it fully. The new battery can't even power the vacuum to clean a third of my house, returns to charge which then takes over a week to complete to resume cleaning. Don't waste your money on this.

Works with the T8. Easy install. Vacuum ran for 65 minutes and is at around 25% battery remaining.

Buying batteries like this can be a bit of a gamble. You never know how good it is until you test it out. Well, I tested it for you, so you'll know exactly what you are getting. I fully charged this battery pack to 16.7 volts and then put a constant 500 mA (1/2 amp) load on it to see how long it lasted. It lasted exactly 7 hours and 27 minutes with this load. That works out to 3,725 mAh, while the claimed capacity is 6,400 mAh. The thing is, all of these claimed capacities are lies. So I grade on a curve. Even then, I can only give this battery pack 3 stars because based on others I tested, I expect an 8-cell li-ion battery pack like this to put out at least 4,000 mAh before I can recommend it. Will it run your RoboVac for a while? Sure. Will it run it as long as the battery that came with it new? Probably not. You can decide if the price is worth it or if you want to find a longer lasting battery. The problem is, you won't know if another battery you buy is better or worse than this one unless you read another review like this one or test it yourself. For comparison, I just tested another battery pack that looks identical but claimed 6,800 mAh capacity, and it put out only 3,300 mAh. Worse than this one, and also far short of the claimed output. That's why I grade on a curve, or else it would be 1 or 2 stars. If you are not picky and just need to get your RoboVac running again, this will work. If you can get the Eufy battery for anything near the price of this one, I'd try the Eufy one instead, but I have not tested that one.

The battery as received reported 100% but only ran for 1 hour. Since then a subsequent recharges it runs 2 to 3 hours on a charge and brought the power back to the vacuum and it behaves much better once again. I will buy another for my second vacuum.

I thought that I was going to have to replace my robotic vacuum. Thank goodness that it only needed a battery. Once I replaced the battery, the vacuum started back working with no problems.

The Eufy website was sold out of batteries. I Found this one on Amazon and read the reviews. It was a perfect replacement for the OEM battery and my vacuum is back up and running for a fraction of the price