3200mAh Replacement Battery for Eufy RoboVac 11s, Suitable for Eufy Battery Replacement, for eufy11 30 15C 15T 12 35C, for Ecovacs Deebot N79 N79S DN622, Goovi F007C D380 D382, Amarey A800 A900

Perfect fit and replacement for our OKP K3P Vacuum, which had dead battery after the warranty expired. Instead of trashing the vacuum, I searched the part number for the battery and this came up. Slightly more mAh than the stock unit. I'm fairly certain this is just four 18650s daisy-chained together, but it fit correctly into the pocket in the OKP Vacuum, despite not being mentioned as a match for my particular vacuum. Easy install - it's working like new again and holding power. Mainly just mentioning the brand/model of vacuum I'm using this for since I didn't see it in any other reviews. Probably a clone of another brand or something, but hopefully this helps someone buy with more confidence. Stop throwing away technology and try to fix broken things!

I bought the eufy almost 2 years ago and I have never been happier! The other day after over 700 vacuum and recharge cycles, the battery lost power. 2 days and 20 bucks later, she’s as good as new! 2 screws, 1 plug, 3 minutes…that’s all! My kids have 2 cats, and I was buying a “big box store” vacuum every year and a half, even the “good” brands, and they were garbage, beyond repair. I bought the Eufy on a whim, figuring I’d use it while I did research to find a decent vacuum that would last long, never imagining I just did. Every day I was vacuuming with an upright before I got this, and once I got this vacuum, my carpets got cleaner! Not kidding! Get the brush kit, and change those out every few months. I’ve spent less than $200- for the vacuum, brushes and battery these last 2 years, when I would be in almost $400- on thr “good” vacuums that I would have to push around myself. Love it! You can’t go wrong here.

Simple install brought my vacuum back to life after I left it sit in storage over a year and murdered the battery. Run time seems about the same as it was when it was new. Charge time is also comparable. If you’re otherwise okay with your robot vacuum, but it isn’t working like it used to - try one of these before you get a new unit. It’s so much cheaper. This new battery brought it back to being brand new (I did also do a full refresh of the filters and roller bars and side brushes). Install on my machine was like 3 screws and unplug the old battery and put this one in. Absolutely identical battery pack size and connectors made this an 8 minute job. I run my unit every weekday and it consistently gets 1.25-1.5 hours run time on max suction. Which is comparable or better than when I first bought it.

I don't know how to do much handy work around the house. Ordering this was kind of a dare I imposed on myself. My Eufy RoboVac's battery died and I just couldn't take it. So I took a chance. After I received the battery, I sort of put it on a shelf and stared at it for a couple of months... I couldn't convince myself to try, the stakes of me failing being so high. So one week ago I finally summoned the courage to attempt changing the battery on my cleaning robot. Took out my toolkit thingy I bought but have never used, and chose a pink screwdriver. Opened up the battery compartment and faced my fears. There they were, the dreaded wires. Turns out, this system was made for people like me. I did not have to deal with the wires, they are attached to a plastic piece that you detach from the robot, and the new battery comes with the same plastic piece that you just attach. Done, and robot is working. If only everything was so easy

Last longer than original for run time. Charge time us the same. Good value for easy replacement.

This lil buddy has restored some youth into my 4 year old Eufy Robovac 11. I was getting the occasional 4 beeps when charging. Assuming that was an indication of the battery going out. It started lasting only 15-20 minutes. Placed the new battery in, (Easy to do) let it charged overnight. Ran it in the morning and went 100+ minutes. So far so good. Only had it for a day so cant say anything on the longevity of it. Plan on riding this vac out until the batter goes out. Hopefully another 3-4 years. Don't need it to run for long as my house isn't too big. So far 5 Stars and recommended if your battery is just the issue.

Not sure what happened with my Proscenic 850T, but after a move, the battery completely died. Not waiting to pay $50 for a battery replacement, I found this. While it doesn't say it's compatible with my robovac, the specs were the same. Initially there were some weirdness with charging, it wouldn't charge beyond 68%, but after the first use it was able to charge itself to 100%. Since it's day 1, I don't know how long this battery will hold its charge. but if you have an older device like mine, it might be worth giving it a shot rather than junking or overpaying for a battery replacement.

I purchased this lithium battery in January for my robot vacuum, hoping to rejuvenate its cleaning prowess and reliability. Initially, I was thoroughly impressed. The battery life was excellent, and my vacuum could complete its cleaning cycles with power to spare, exactly what I was looking for. However, just two months in, I’ve noticed a significant drop in the battery’s performance. By March, the battery began draining much quicker than when it was new. It now struggles to hold enough charge for the vacuum to complete its tasks, which is disappointing considering its strong start. To add to the disappointment, I’ve found myself unable to return or exchange the battery since its return period has ended. This limitation has left me in a difficult position, as the initial promising performance has not lasted, and now I’m left with a battery that drains too quickly, without the option for a return or exchange. While the battery was an excellent fit at first, providing the boost my robot vacuum needed, the longevity and reliability of the battery have been underwhelming. I hoped for a more durable solution to my vacuum’s power needs. It’s unfortunate to see such a decline in performance over a relatively short time, compounded by the inability to return the product after quickly passing the return window. Overall, if you’re looking for a quick fix, this battery might serve you well in the short term. However, be prepared for a potential drop in performance and battery life, as I experienced, and be mindful of the return policy duration. I’m now on the lookout for a more reliable long-term solution to ensure my vacuum can keep up with the demands of my home without frequent replacements or recharges.

Keeping power hope stays that way so far so good

I was relieved to see that the battery fixed my robotic vacuum. It was delivered with enough of a charge to do a run. I didn't have to charge first to see if it worked. Arrived VERY fast.

Battery install was quick and easy

Just bought a month ago. The battery is already dead.

Sent back did not fit