Use this guide to safely remove and replace the battery in a Logitech K750 Solar wireless keyboard.
Note: The K750 Solar requires a rechargeable ML2032 coin cell battery as a replacement. Although it's the same size and shape as the more common CR2032, CR2032s are not rechargeable. You can also use a LIR2032 rechargeable battery as well.
What you need
Before you begin, flip the keyboard's power switch into the OFF position.
Flip the entire keyboard over, keys facing down.
Insert the flat end of a spudger into the gap between the battery tray and the top surface of the keyboard.
Pivot the spudger down, towards the top of the keyboard, to begin to pry the tray out of its cavity.
I used my 1/4" Ratcheting Screwdriver (which doesn’t appear to be available anymore) to force the battery tray out; I held it at a low angle with my left hand and used it like a chisel, except I used my right palm instead of a hammer to tap it a few times. Note that I didn’t specify a bit size or type to use because they’re completely unnecessary for this purpose.
The battery says “DO NOT REPLACE BATTERY” on it? Very difficult to open, by the way.
This is not hard to pull out. Once you get it out far enough to see the pry slot on top do not use that like the article says. Yes the pry tool on the left and the right side in an upwards-towards your motion similar to the way you got it started. This will release the pins and then you can just pull it out. it does not take much to release the pins.
I followed your directions using a small (3/16") flathead screw driver. The keyboard is upside down. I got the battery out far enough to see the pry slot and even the clips holding the battery tray in. I put the screwdriver in one side of the battery tray opening. It took a bit of pressure while rocking my hand holding the screwdriver side to side (one end of the screwdriver head is up when the other side is down), then the same action on the other side of the battery trays slot. Good luck.
Use the flat end of the spudger to push the battery tray out and away from the keyboard.
Remove the battery tray.
Push the battery out of the tray to remove it.
Thank you. It was easy enough to do. Also can be bought at newegg for $7.00 for 2 of them.
Great tip! Everything worked fine. It was quite hard to get the battery tray out (was not designed to be user-maintained! I did cut off the “ears” for next time).
Very happy to keep this keyboard going; very happy not to purchase a new one (money saved); very happy that a (still usable) keyboard did not go in the trash (save the planet). Thanks!
My K750 just started having problems about a month ago. It went dead today. Just saw this article to replace the ML2032 battery. I will get replacements from Amazon. Overall, like one commented above, I will now be able to continue using my keyboard without trashing it into a landfill somewhere. Although I guess I will deprive the sacred economy and Logitech of the purchase of a replacement Keyboard.
I bought my Mac Keyboard, Logitech K 750, in May 2016. For the first time ever, the keyboard shut down at the end of 2019, totally dead. To keep it alive, I kept charging it daily, and it was hanging in there with about a 30% recharge. We installed the new ML2032 battery last night (amazon), and this morning, keyboard charge is in the Green Zone for first time in months. I'll be putting it in the sun later today for full charge. So far, so good, and we used eyeglasses screwdriver to open the battery slot. Didn’t cut the tabs - figure one change in 3-1/2 years we can deal with it being a little tricky.
This was good info. Unfortunately, on the battery it says, “do not replace.” Now What?
The instructions on the Logitech website itself say “ignore the do not replace tag”. Just don’t try a CR2032. I used a pair of tiny skinny litte screwdrivers.
Thanks for the awesome instructions, $50 saved.
Many thanks for this write up-it was very helpful, and my keyboard is back in the land of the living.
To all the people asking about the “do not replace” sticker on the battery - I assume this is Logitech covering themselves for the people who don’t realize it’s not a standard CR2032. If you know what you’re doing, and have the right rechargeable battery (ML2032) - go right ahead and replace it!
I just replaced my battery and still nothing. The battery health indicator light doesn’t show up red or green. Is the keyboard just dead?
i would love the answer to this— my keyboard just died as well— no red light not green light and now cant log int omy computer becasue i dont have a keyboard! help!
m k pen -
Merci pour la bonne qualité du tutoriel, malheureusement au démontage j ai abimé le support de la batterie, je vais essayé d en fabriqué 1 avec une imprimante 3 D.
Thank you for the detailed instructions. Just replaced the old battery with a new one bought from Amazon. I was hoping they had some charge so I could test it out, but I turned on the keyboard and nothing lights up. Any idea what the best way to charge it is and how long it should take to charge?
To reassemble your device, follow the above steps in reverse order.
Take your e-waste to an R2 or e-Stewards certified recycler.
Repair didn’t go as planned? Check out our Answers community for troubleshooting help.
To reassemble your device, follow the above steps in reverse order.
Take your e-waste to an R2 or e-Stewards certified recycler.
Repair didn’t go as planned? Check out our Answers community for troubleshooting help.
İptal et: Bu kılavuzu tamamlamadım.
203 farklı kişi bu kılavuzu tamamladı.
My sentiments, exactly!
There a better way to open it
put the knife or better a screwdriver on the other side (keys upside); worked for me without damage the keyboard :D
Thank You! That did work much better!
Here is an even better method.
You can also totally prevent damage by finding a laminated biz card and cutting it into 2 one inch strips and inserting both of them into the slot on the top side (solar side) of the battery compartment.
Then get your tool ( I like small pointed scissors) and pry it out between the cards.
It's only dangerous to replace it with a NON-RECHARGEABLE battery. If you insert a NON-RECHARGEABLE battery, it will over heat and EXPLODE.
Yes batteries are a hazardous waste and should be disposed of at a facility that can process them. As long as the battery is not leaking or swallowed, it is not dangerous. Logitech doesn't want you to replace the battery, they want your warranty to expire so you're forced to buy a new keyboard. This tactic is known as planned obsolescence. I replaced my original battery with a ML 2032 rechargeable from ebay ($7)for the K750 keyboard and so far so good(day 1).
The battery from a supplier on eBay cost about $5. The repair took <10 minutes to complete.
One note of caution: if you trim the ears for easier replacement in the future, be advised that the tray will have a slight tendency to pop out, about 1mm from the back of the keyboard. You could use a piece of tape to hold it in, but the tray will not slide or fall out very easily on its own.
Since I do not believe the batteries from eBay nor Amazon, so I decided to deactivate the solar panels and use a common CR2032 battery and it works just fine :-).
It requires a little soldering, and in order to get hands on the cables, so you need to carefully peel off the plastic top deck and unscrew a few screws.
In SollarApp then see the battery capacity and expected no supply of solar energy.
I have it documented on photos, so maybe I will post it here as a guide.
how long did your keyboard last with one battery? probably not too long
Thank you muchly...AND for the warning about using a ML 2032 and NOT the non-rechargeable version...lol. Dummy that I am I might have just popped one of the ones that might "cause bad things to happen" ...>)
Just a note to make things a little easier: when using the butter knife, you want to depress the two tabs near the FRONT of the battery holder, on both sides (look at the picture). Those tabs stick out slightly further than the opening, which is obviously what prevents you from puling the battery holder out. Depressing the tab will make it more or less even with the opening, allowing you to pull it past the opening.
FOLLOW UP. There is an even easier method to get the battery compartment open. You don't need a butter knife at all. Instead, use the same small flathead screwdriver to press down on the tabs along to right and left sides. Using this method, it took me all of 20 seconds to remove the compartment.
I've just did the replacement yesterday evening of the battery with a brand new ML2032... and it doesn't work... may be I have to wait the battery to get a little bit loaded...
I let the keyboard under un LED light a few minutes yesterday, but it did nothing more...
Hope the keyboard is not definitely out of order :-/
You have to let it charge-up over night before the very first use.
If your new battery doesn't work try taking it out and flipping it over as it may have been installed upside down (I just did this by accident :D).
I did the wrong orientation too. I did not pay much attention to orientation because usually the plastic molding forces the correct orientation, but not in the k740.
where can I find the ML2032?
It's commonly available from Amazon, eBay and in the UK from CPC/Farnell
What mentally deranged engineer designed the Logitech K750 keyboard to require a tiny little screw driver and the strength of a 95th percentile mail to access the battery?
The type of engineer who would rather you purchase a new keyboard than to install a replacement battery. It’s called Planned Obsolescence. It’s good for the company bottom line.
chinese made, chinese designed
I can't find this particular battery anywhere for now, but since my keyboard died and doesn't turn on no matter what (sometimes the led blinks red when I turn it on, sometimes it doesn't lit at all, but it doesn't seem to be charging), I tried to take the battery tray out anyway, following instructions here and elsewhere. I found it very hard to remove and I damaged the tray and the keyboard while doing it. After re-inserting the battery, the keyboard is still dead :( I hope when I get a new battery it'll fix things, because I've grown addicted to this keyboard, it's the best one I've ever tried because it's soooo comfortable to type on it. Also, Logitech sucks so much for this battery issue, I hope they go bankrupt one day >:(
Anyway, here's another take (more detailed) at the whole removing the battery tray process:
I'm the same, I like the feel of this keyboard. You can find the batteries on eBay.
I finally decided to purchase a replacement battery on eBay, I just installed it on my K750 keyboard (again, damaging the battery compartment even further...), and the keyboard seems to be working fine again! Solar App tells me that the charge is already at 100%, so I hope it'll keep that way for months to come (like the original battery did).
After a few weeks using a different keyboard, all I can say is that I'M SO GLAD I HAVE MY K750 UP AND RUNNING AGAIN!! <3
One thing I tried doing that worked was after taking the battery, that came with
the keyboard, out of the tray I removed the yellow warning label stuck to the
battery. I thought that it might possibly be interfering with the solar panels charging
the battery. And that really helped with not only getting a charge to the battery
but also with how much it charged up to. I know they want to warn people about
the battery but I thought they could have put that lable anywhere else.
Your mileage may vary but it worked out well for me.
Let me partially quote Henry's comment from 2014: "Lost respect for Logitech."
It's so obvious a dirty capitalist sales move by Logitech to tell their customers they can't replace the battery, when there's a small dedicated compartment with (relative) easy access. I am not saying capitalism is bad, per se, but this is like Logitech taking a huge dump on their customers' chests with eyes wide open.
Great guide. Thanks!
Tip for best results:
See the Youtube video by Alexander Kurz. Video is not in English but it is very demonstrative and easy to follow through.
Do not replace with CR2032. Replace with the ML2032 battery only. If you are not able to get it from local shops or in your country, you can always buy it online from AliExpress.com (sister website of Alibaba.com - a very reputed site). I recommend to purchase 2 batteries rather than one, just to be on safer side, but AliExpress does have option of return/refund if your newly purchased battery doesn't work.
Another warning and tip:
For those of you brave enough to try the CR2032, you can find an iFixit guide to open the keyboard and permanently disable the solar cell connections, so the CR2032 can be safely used in the K750. (Do not just cover the solar cells as that is not recommended at all).
The keyboard works like a charger. You cannot put non-rechargeable batteries in a charger whether the battery is an AA or an ML2032.
You can recycle the old battery anywhere that takes cell phone or laptop batteries (including Home Depot.)
Making sure I do not use CR2032 (non-rechargeables).
It’s 2018 now,
———————if I cannot find the ML2032, considering finding an equivalent amp volt rechargeable.
Any recommendations, tried and tested, than going for a rewiring to bypass the solar charger?
This article helped a lot. I got a battery from Amazon (https://www.amazon.com/gp/product/B00CJ3...).
Awesome, thanks! I got the keyboard used with my Mac, it worked perfectly for 6+ months with near to no light... and then suddenly gave me trouble. Battery would not charge enough anymore, even charging under direct sun would only hold for an hour or so, I ended up having my cell phone flash light atop the keyboard. Ordered the right battery, forced open the battery thing (what a dumb mechanism), and... it is at 100%. And so far so good - seems to like me again. :)
Now off to somehow improve general lighting here.
Fantastic guide - many thanks!
And +1 kudos to yannick NR - 10/21/2014 for his second comment from the top: after struggling and failing to extract the battery by pushing up from the bottom of the keyboard, his tip of sliding the butter knife into the battery compartment on the *keys* side of the battery compartment makes the whole operation really easy. Just slide your blunt, rounded butter knife in between the battery and the black keyboard side and then push up on the compartment lip with your thumbnail to start it moving. After only a few millimeters (when you see the top edges of the ears), you'll find that there is a lip on the keyboard-side top edge of the battery holder which you can use with your butter knife to lever out the battery holder. I used a small screwdriver just to release the ears and the battery holder popped out in less time than it took you to read this comment. Better still, no force was required and the keyboard was left completely unscratched. Very happy to get my K750 back... :)
Does anyone know whether I need a ML2032T25, ML2032T26 or a ML2032T17 battery? I have no idea what the difference is, and these are the ones I've found. My keyboard is now having trouble charging. It's placed in an area where it doesn't get any direct (sun)light, so I have to place it in the window for half an hour or so before it works... It's about 4 years old, but have not been used every day!
I'm going to have to add my name to those who don't understand why this isn't a standard option, why it is that Logitech recommends that we toss the keyboard once the battery wears down? The justification some people here surmise is that it's because lithium batteries require special disposal. But what does Logitech think most people are going to have to do with the keyboards with the dead lithium batteries in them? It's irresponsible of Logitech to have this on the market and not to offer a way of replacing the battery or at the very least encouraging customers to responsibly change the battery.
Kudos to ifixit for providing responsible solutions.
I have 2 keyboards that I was going to toss when I thought I would try to get the battery out. I was able to get the holder partway out.. You told me how to fix that . Thank you..
I found this After I figured I could replace the battery and did. So easy. I have been with out this keyboard for weeks thinking I had to send it in just to replace the stupid The DO NO REPLACE BATTERY . DUMB. Logitech! Make it easier to like your products and not do stupid stuff like this. Most of us are quite capable of this simple feat. Thank you cityzen!!
Thanks for this. I left my old keyboard on for two weeks unused, then found it completely dead. Reading a comment above, I removed the yellow sticker and reinserted the battery. Worked immediately.
In a pinch, I covered the solar panels with black gaffers tape (electrical tape will work too) to stop the charging and and used a regular CR2032 battery. I haven't decided if this will be a permanent solution or if I'll order a ML2032 from Amazon/Ebay.
My keyboard stopped working out of nowhere at about a year old. I didn't use it often. Yes sometimes I would forget to turn it off, but I don't think that was enough to kill it! Found this article and decided to give it a try. Got my ML2032 battery on Amazon for less than $10. Great step-by-step instructions. Once I got through the difficulty of removing the old battery, replacing it was easy. Worked fine the first night but next day it was dead again. I don't know if it is the battery or just a defective keyboard. Either way I think its time for me to call a quits with this one :( I really liked this keyboard too!
Anybody tried to do a cable mod on the keyboard? I am sick of adding to the electric dump, so I am thinking about connecting a cable to the battery poles.
I did sort of a "cable mod" on the keyboard. It's a very invasive mod but I have a large lithium battery that will last for probably a year or more. Here's a link to my atrocity: https://lanzerdiy.wordpress.com/2017/02/...
My keyboard went dead and I suspect it might have been partly because I put a pile of DVDs between it and the window in my office, thereby restricting the light to the solar cells. There again, It might have been the age of the battery, which significantly was just over three years old - the guarantee period.
Anyway, I put the keyboard by a well-lit window for several days to no effect and then I left it out in bright sunlight for about 8 hours and then put it under the bright halogen bulb in my desk lamp over night, and lo and behold it came back to life. The first glimmer of hope was when after hours of illuminating it with bright light, the red light in the light guage momentarily flickered and that was the beginning of the recovery.
What I suggest is that you always press the button on the top right corner next to the on/off switch to ensure that there is enough light to charge the solar cells (ie the green light must come on) and don't use it unless that happens. So, it might be worth persevering.
I tried similar things with TWO of these keyboards that had not been used in a long time. It wasn’t until I stumbled across this website that I even realized there were batteries in these. Duh. Anyway, after numerous attempts to recharge the solar panels using various bright lights, I concluded that the batteries were dead/dying in both units. Reordered…will see if I can get them going with new batteries when they arrive.
My battery is on its last legs. (I'm typing with it now.) My question is: If the battery that came with the K750 is chargeable, how does one CHARGE it? No one seemed to ask that question. Any takers . . . ?
the mini solar panels on the keyboard constantly charge the battery, there is a charge indicator button on the upper right side that will launch an app onto your pc screen showing status. this thread is about changing a worn-out battery that no longer accepts a charge
I have just followed advice at http://www.nutstech.info/2013/05/how-to-... and have followed this procedure:
Turn off the keyboard.
While holding onto CAPS lock, keep pressing a few keys for the next 5 or more seconds.
Turn on the keyboard.
It worked for me.
I may also have a weak battery (the red LED flashes when I press the test putton), but at least I can type with it again. My keyboard is about 4 years old and this is the first time it has stopped working.
Great guide. My battery has lasted for eternity and just started to die. Mine was stamped with '09, so I presume 2009 and it is now 2017. Not bad at all.
On a totally unrelated side note, the ML2032 rechargeable lithium battery is also what you should use to replace a Dreamcast clock battery.
Excellent guide. I followed the instructions and my keyboard is working again. I found a reasonably priced replacement battery at http://www.watchbattery.co.uk.
Super gut! Danke für die gute Beschreibung.
Ich hatte eine andere Anleitung angeschaut, aber da wurde nicht auf die Polarität hingewiesen. Das ist hier schön zu sehen. Das Logitech das so schwer macht ist ein Unding, vor allem das von Seiten Logitech keine Hilfe zum Austausch gibt. Mehr noch, es wird gesagt man sollte es nicht tun. Ich kann nur jedem Raten es selbst zu versuchen. Bei mir hat es super geklappt und ich spare mir 80€ für eine neue Tastatur.
Ich werde mir keine weitere Tastatur von Logitech kaufen!
The battery can be removed, with a bit of difficulty, and replaced with a LIR2032H from Amazon.
Works a treat.
While wanting you to buy a new keyboard may indeed be a reason for the battery warning it could also be a healthy dose of litigation fear. People are stupid. Really stupid. A “caution - use only rechargeable ML2032 battery” does not protect the company from someone sticking a CR2032 into the unit and causing a fire as much as “Do Not Replace Battery”. In the former the question “so, how do you protect the customer from putting in the wrong battery” can be a pain to answer and not worth the effort for a $60 keyboard. Putting on the Do Not Replace Battery sticker lets the company simply say, what part of Do Not Replace Battery did you not understand.
I agree that not making it easy to replace sucks but unless the battery is keyed to prevent misuse then… well… People are stupid.
Well, now Logitech themselves say in their site “Ignore DO NOT REPLACE BATTERY instruction on the label”.
So if they put that in the label to avoid possible litigation, now they have a new source of litigation in their own website ;)
Maybe they’ll figure it out by the third revision. The K750 is sold still as a Mac and there’s a Window specific one.
Excellent tuto. Permet de redonner une 2e vie au clavier K750 de Logitech. Et cela pour moins de 4 euros (prix moyen de la pile rechargeable “ML2032 battery”). Que l’on trouve très facilement sur Internet. Honte à Logitech ! Shame on Logitech ! Logitech fait croire à ces cliernts que la pile du K750 ne peut pas être changée. C’est faux. Honte ! Honte !
J’ai extrait avec une truelle à bout arrondi, ça marche aussi très bien. Il faut juste insister un peu (juste quelques dizaines de secondes) et à force de répéter le mouvement, ça sort doucement. Je n’ai rien abimé en le faisant.
Et merci pour la référence de la pile rechargeable.
Ah, et ces manipulateurs de chez Logitech on même mis un autocollant “Do not replace battery” sur la pile en place. Ils sont censés faire un produit écolo et durable et ils font tout ce qu’ils peuvent pour qu’on jette au bout de deux ans. C’est une honte.
Thanks, this was a first step and then I clipped the solar panel circuit as outlined through Endrju’s link: Logitech K750 Keyboard ML2032 to CR2032 Battery Conversion
Works great and using my K750 Mac to type this now. The test light only flashes red instead of green even with a fresh battery now that the wires to the solar panels have been cut but that’s a small difference. Obviously the battery will be dead when I don’t see a red light.
As a benefit, my shaded office (where I do image retouching) rarely saw enough light to keep the keyboard charged for routine use without always storing it on the windowsill even when it was new. Changing it to use regular batteries has improved its utility.
new lithium battery installed correctly. still zero power. no led light. is there a power contact issue also?
Before reading the comments, I attacked this task just as stated by the author. My tool was a keychain-sized Swiss army knife. Now, I need to find a store that actually carries this battery. And as for making it easier to remove the battery the next time, I’m leaning heavily towards David Powers’ strategy; when I return the battery tray, I might leave the two pieces of the laminated business cards slightly protruding from the slot.
UPDATE: On 7/27, I submitted a ticket to Logitech support reporting that the link to the user guide for the K750 keyboard was dead and received their reply today. They provided to me this link for resolving the most common issues:
Scroll to "Changing the batteries in the K750 keyboard". Good luck!
This is really helpful (unlike some of the U-Tube videos - where the doozie trying to show you has the battery compartment out of the frame as he takes it out). But I got my keyboard to work again by taking the old battery out and just putting it back in again!
And why does it say “don’t replace battery” - so you go buy a whole new keyboard?
Opération réussie en moins de 5 minutes, diagnostic et recherche sur internet incluse, merci !
Quant à logitech , honte à cette entreprise pour utiliser l’obsolescence programmée à ce niveau aujourd’hui…
Hi , can i Use a LIR 2032 lithium ion which is a 3.6v instead 3 v ? its for my k750 keyboard for windows ( black ) and mac ( white)
Point of interest is there seems to be 3 things holding in the battery.
The 2 ‘wings’ and there is an indent just under the door which seems to prevent the whole mechanism from ejecting.
I slid a spudger (a thin metal prybar) or a thin screwdriver between the case an that indent thus freeing the hold on the whole tray.
Then taking a push pin to each lower corner I ’walked’ it right out alternating the prying left and right.
After attempting a battery replacement from and old keyboard to a new one, I found that on one keyboard the battery tray was still fused to the main chassis on the side furthest from the edge of the keyboard. The other unit wasn't fused to the chassis, allowing for ease-of-access to the battery compartment with the recommended tools. I would add some level of difficulty in case this is a problem for some users as it's easy to damage the battery compartment and housing if it is indeed fused to the main chassis.
love the k750 feel of keys / glad i don't have to place in sun everyday , had no ideal had an battery i , have ordered one ,the cr2032 battery will work for now
Cant find this ML2032 or LIR2032 rechargeable battery in India, can i use regular CR2032 battery?