DC 3.7V 600mAh 602535 battery Replacement for Logitech MX Master 2 MX Master 2s MX Master 3 MX Master 3s MX Anywhere 2 MX Anywhere 2S MX Anywhere 3 MX Anywhere 3s MX ERGO Wireless Mouse AHB572535

This battery is almost exactly the same dimensions and quality as the factory battery in my MX Master 3s. It was an easy installation and there were no issues whatsoever with the battery dimensions or the plug. The life seems comparable to the factory battery.The pack was shipped at a nearly perfect 3.8v per cell, meaning that the manufacturer took the time to put the pack at storage voltage for shipping. A small detail, but it gives me confidence in the attention to detail of the manufacturer.A great replacement for if your battery fails on the Logitech MX Master 3s.

Perfect

Battery no longer charges. Lasted a couple of months. Dead two weeks after the return window closed.

Pearl covers off screws carefully. I was able to put covers back on without new double sided tape. Also find a good tiny Phillips screwdriver.

I have used my Nextbase 522gw dash cam for years. Suddenly I noticed all of my settings were reset, and each time I reset them back to the correct/wanted setting I would then again realize it was reset back to factory settings after each time I turned off my car. After some searches online I found out that the internal battery (350mAh 3.7v) had failed, and as such would not keep those settings nor allow the dash cam to "wake up" if the car parking feature was triggered.As such some videos on you tube showed users installing larger batteries. I wanted the same, so I ordered many batteries, and found that this one would still "fit" and offered a larger capacity.I had to remove the adapter, and carefully solder on the wires to the old wires. Disassembling the dash cam was easy after watching videos, installing the battery was a little cumbersome, but ultimately fit and is working great as I wanted. The manufacturer apparently expects the connection to be removed, as the battery also came with a small piece of heat-shrink tubing, which I cut and used for all three connections.The battery capacity is either over-stated, or is from poor materials, as other reviewers stated - the battery simply does not perform as expected. With that said, the battery works better than the old one that I replaced and that's all that matters to me.I hope it will last more than year.Only time will tell.

My Logitech MX Ergo trackball's battery started not providing power even with the trackball plugged in. I have using it like this for 3 months, finally it bite the dust. So I ordered (what I thought) a brand new trackball. It was a renewed item, it is working good. I replaced the old battery in the old trackball, so far it is being charged up, will be using the old trackball with the new battery on my Alienware MX-18 laptop.

Saved $100.00 by spending 15.00 and a little time to install. This is a must do for Logitech owners of the MX series. Please note you will need a very small trox screwdriver.

To replace the battery in MX Master, you need to remove the side pads to get to 4 screws, as well as 2 visible small torx screws. Once the screws are removed, it's easy to replace the battery, and this was a perfect fit.I'm 2 years down the road now, and back to very short battery life. I get just a few days before the <10% warnings are popping up, and I have to plug it in frequently.I'm leaning to MX Master 3 instead of replacing the battery again. Not 3S - all my dongles are Logitech Unified - I don't want a mouse that's breaking away from being compatible with my existing investments. Not sure though if the claimed 70 days will hold up so long - the MX Master claimed 40 days, it's nowhere near now.I don't mind a new mouse now and then, but Logitech mice are not cheap. Wish they were less of an ongoing money sink or that the battery was readily replaceable with one that lasts as well as OEM.