Logitech Replacement Batteries

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Logitech MX800 Mouse and Keyboard 

About a month ago I went to use my Logitech wireless keyboard and the light was blinking red when I tried to charge it. I found out that it meant the rechargeable batteries weren't good anymore. A few days ago, my mouse was dead all of a sudden and it too started to blink red when charging. So it was time to do research to figure out what were the appropriate batteries to get as a replacement. Boy, how rechargeables have changed. The two devices were purchased at the same time so it isn't too surprising the batteries failed pretty much at the same time.

I have the MX800 Keyboard and the MX Mouse (replaced with the MX800 mouse), both I highly recommend. The keyboard is back-lit and you can turn it on my waving over it. Great for working in lower light or when using your computer on a TV. The mouse is very comfortable and has a forward and backward button as well as a switch for the wheel, making it great for gamers and word processing. The batteries last about 3 years.You can never go wrong with Amazon's prices and Prime free 2-day shipping. They even use these keyboard's at my design school in the graphic labs.


So when it came to researching about replacing the batteries, You always need to replace the batteries with the same type. As in, replace a Lithium-Ion with a Lithium ion battery and a NiMH with a NiMH.

In the case of the keyboard and mouse, a certain kind of rechargeable NiMH is used, a Low Self Discharge or LSD battery should be used. It doesn't discharge quickly like older batteries, but it can power your electronics for a longer time. They are also referred to as "Pre-charged" or "Ready for Use" batteries. That settled I found this great blog post on the Logitech Forum on battery brand recommendations... which I summarize below.

"Though you CAN replace the battery with any old NiMH AA cell, you ought to replace it with a good quality NiMH LSD (Low Self Discharge) AA cell. Sometimes these are marketed as 'Precharged' rechargable batteries. I recommend Panasonic branded ones. If you want to learn why, be prepared to find the sea of battery geekery to be very deep indeed. You may want to just trust me on this. It is worth noticing, however, that your mouse originally came with an LSD cell.
Ignore the mouse/Setpoint battery indicator. Put in the fresh precharged LSD battery and use it until it dies. Then charge it, and use it until it dies again. Then charge it, and you should find the battery indicators have got their eye in on the new battery.
If you can't get any of those to work then you may have a fault in the mouse, but the battery is the first thing to confirm of course."



You don't have to read it, but it simply states that the best rechargeable batteries are Panasonic. So after some googling, I found the Panasonic makes Eneloop batteries. When replacing batteries, always match the mAh's (milli-Amp hours) on the batteries or use a higher valued battery, which will also increase the amount of time the battery stays charged. I always found the original battery in my mouse could last longer, so I replaced all three batteries with a rating of 2000mAh with 2550mAh, and I went for the Eneloop Pro batteries. To save a few bucks, you can go for the regular Eneloop batteries which are rated at a maximum, 2100mAh. These types of batteries are also great for gaming remotes but be sure to buy a charger too. They also come charged ready to go and have a great shelf life.


I hope this article helps you out. Be sure to do a little research on your particular device and go from there.

Performance

When I received the batteries they were cold, so I let them warm up to room temperature before I put them in the mouse. Batteries are temperature sensitive so I think it best to let them warm to room temperature so that it starts functioning under normal conditions (Room temperature) from the get go.

I put one of the Eneloop Pro batteries in my Logitech Mouse and I have to say it lasted 16 days! The original battery only lasted about 5 days before it needed a charge. I definitely recommend getting a replacement battery with a higher mAh rating so your devices stay charged longer.

Sources

Logitech Forum