Maxell ML2032 Rechargable 3V coin cell lithium motherboard cmos battery

Perfect replacement battery for my Logitech K750 keyboard!! Very pleased!

I got mine from queens seller. Came in a ziplock baggie with a cloth cleaner of some sort. I tested the strength and it came pretty charged so I was happy I didn't have to lay it out in the sun after installing in my solar keyboard.Got it to replace the battery in my K750-mac keyboard. Let me tell you, Poping that battery tray out is a chore. Had to use a flat head screw driver and a butter knif. I inserted the knife on the keyboard facing side (top) to allow enough of an opening to get my screwdriver 🪛 in. There's a slit in the tray that let me pop it 1/4 out with the screwdriver. It doesn't get the whole thing out but 1/4 will pop out this way. Then you can flip to the back of the keyboard and you'll see a smaller but deeper slit that fits the flat head of the screwdriver. I use that to pop the whole tray out. See my pics. Now mind you my battery and tray went flying across our livingroom. Make sure your near a flat wall or a corner so retrieval of the flying tray is easy. I had to dig for it behind our sofa which was not fun.Once you get it the switch out is easy, just be sure you have the battery facing the correct side cause you'll have to pop the annoying tray back out if it's not like mine was not. Im sure my tray will look deformed in 2 more battery change outs. If you found this review or pictures helpful or you enjoy clicking on things.. I humbly appreciate your feedback👍🏼. Cheers mate🍻

My outdoor weather station sensor stopped working so I took out the battery to replace it and I discovered that it is a rechargeable battery and the unit is clearly marked to not use a regular battery to replace the original battery. I couldn’t find a rechargeable battery like this locally so I checked online and Amazon had them available so I ordered one and it arrived two days later. I installed the battery and put the sensor back up and it has worked perfectly with the new battery. I noticed that the battery I removed was the same brand and part number so I was sure it was the correct battery for my sensor unit.

I had this battery in an outdoor weather system. The battery lasted less time than I experienced with other brands. It was protected from the weather but still exposed to outdoor humidity. The worse thing is this battery was beginning to corrode. This could have been a real problem as corroding could damage an expensive piece of equipment. I did buy another of the same brand and will see what happens. The price of the battery is a major plus.

At first I was unsure if the battery was working. I was a little unclear on what the little red/green test light on the keyboard was telling me. It appears that light only tells you if the solar powers are drawing enough light for charging or not enough light and therefore discharging. It really has nothing to do with the battery itself.For Windows, Logitech offers software that will show you the battery charge level. Linux was not quite so obvious, however the command to find this info in a terminal is "upower --dump". I left the keyboard out in scattered sunlight for several hours and ran that command. Here's the result:Device: /org/freedesktop/UPower/devices/keyboard_hidpp_battery_0native-path: hidpp_battery_0model: Wireless Solar Keyboard K750serial: 4002-1c-5e-43-63power supply: noupdated: Thu 02 Apr 2020 03:16:36 AM PDT (108 seconds ago)has history: yeshas statistics: yeskeyboardpresent: yesrechargeable: yesstate: fully-chargedwarning-level: nonepercentage: 100%icon-name: 'battery-full-charged-symbolic'So it appears the battery is working perfectly. I was worried after reading several reviews that said the batteries were not working and not charging. I wonder if perhaps some of these people were trying to use the keyboards solar test button I mentioned as an indication of the battery charge level. That button will show red in the dark even if the battery is at 100% charge.Now let me just say it's a shame the Logitech would participate in planned obsolescence by putting a sticker on the original battery telling you that the battery is not replaceable. DO NOT REPLACE it says. Sure, they make more money selling you a new keyboard in 3 years than selling you a battery. Not only do you lose out on your $60 keyboard, they're also creating more electronic waste for no viable reason other than pure greed.

The Logitech k750 has been my favorite keyboard for over a decade, unfortunately it seems they may have finally discontinued it. The keyboard itself is pretty durable, but the battery can die. It seems that over time the Logitech changed their mind about whether this was a user replaceable part, but there are later instructions on their website on how to replace the battery, instead of warnings not to replace it.The the rechargeable battery dies, it can present in a number of different failure modes. This time, the when I removed the keyboard from the USB Unifying dongle via the utility, it would not pair again.It takes a little prying with a small screwdriver to get the battery try out. Once out, I popped in the new battery, let it charge until the LED turned green, and then was able to pair the keyboard with the USB Unifying dongle again.Chances are if you have a malfunctioning k750 keyboard, all it needs is one of these batteries.

I bought and tested 2 of these. Both of them were faulty.Rechargeable lithium coin cells like ML2032 will become permanently degraded if they are stored for long periods at or near zero volts.These were clearly stored that way. The photo was taken *after* I charged them twice as long as the battery I'm replacing, and they only got up to 2/3 of their voltage. (1.94 volts for a 3 volt battery) The old one I'm trying to replace functions far better than these "new" ones under the same exact conditions.

Rechargeable battery, works great for my solar key board.