Lenovo Bluetooth Keyboard Battery Light Flashing

This is a very nice headlamp, without two levels of white light, a red light and a flashing red light.  Having the battery pack on the back makes it much easier to balance and the straps are adjustable over a wide range.

As many others mentioned in the reviews, these batteries are now new old stock, as the newest ones were made in 2022 and will arrive completely discharged. DO NOT give up on them - the charger will initially show an error (chamber and calibration light flashing) - keep taking the battery off and putting it back on, and eventually it will start to charge. The key is to not leave it in the charger if the charger is showing the error code, you have to remove and replace the battery until the charger shows that it is charging (chamber light and 50% light flashing). After a few hours the 50% light should glow solid and 80% should start flashing, and eventually it will charge fully

My APC UPS sounded off every few hours with beeps and a flashing red light to let me know it was time to replace the battery. I ordered online and the battery arrived sooner than expected. I installed it and it's been working fine since. The part I especially like, I didn't have to shut everything off to install.

I bought this a month ago when the battery died (I unfortunately did not notice the low battery flashing light indicator). The replacement battery arrived very promptly, was easy to install, and my backup is operational again — and just in time because a tornado hit here a few days later and I lost power for 8 hours.

but it is unsettling to have the upstream light flashing

The keyboard is smooth, and generally what you would expect from Lenovo. The only downside is that it does not have the light indicators to show Caps On, Nums On etc, but generally really good. The Mouse is somewhat big and makes that clicky noise when using. It is quick, responsive and easy to use. The one usb stick for both the keyboard and the mouse is a plus for me!

I've been using clicky mechanical keyboards with my desktop computers for years. I love the build quality, the key travel and that satisfying sound. My only issue's been the thickness because my keyboard tray isn't deep enough to accommodate a palm rest. That meant an uncomfortable wrist angle. This Logi low profile solves that easily. For my purposes, this keyboard does everything I need, want and like. And it does it beautifully. Regarding comments about a slow backlighting sensor, the keys on my unit light up as my hands approach and it seems to be on a par with Logi's MX Keys which I've also used and I did not find it objectionable. As for backlighting going off too quickly, I don't have a problem with that either. It probably helps battery life, which is outstanding. I'm using this new keyboard, via Bluetooth, with one of Apple's new iMacs with the silicon chip and the Bluetooth connection is solid. The Bluetooth settings do show the percentage of the battery charge. If you need to boot from safe mode where Bluetooth doesn't work, just pair the keyboard to the included Logi Bolt USB receiver. The only suggestion I would make to Logitech would be to consider using PBT keycaps since they are virtually immune to fingertip oils and smudges, although a microfiber cloth will work on the existing keycaps.

Great wireless keyboard. Works seamlessly via bluetooth. Amazing battery life. happy to have the 10 key numeric pad. Love it.

Nice design keyboard, I like the round keys design. And it allow me to connect to 3 devices via bluetooth. The battery life is decent so far. I used to have the aftermarket keyboard with the same functionarity but the battery lasts for a month only. Although this one is bit pricy, but I believe it worths the money.

the wireless keyboard and mouse has been great to use and when comparing the price, Lenovo was the best