iTechGuides is reader-supported. When you buy through links on our site, we may earn an affiliate commission. As an Amazon Associate I earn from qualifying purchases. Learn more
Most Logitech mice that document a low-charge state use a red light, but the colour, the blink pattern and the action it calls for depend on the model. Logitech does not use one signal across its range. To know whether your battery is low, identify the exact mouse, turn it on, read the LED rule in that model’s official guide, and check Logitech Options or Logi Options+ if your model supports battery notifications.
Identify the exact mouse first
Every battery signal below is model-specific. Before you read any colour, confirm which mouse you have:
- Turn the mouse over and read the model number on the underside label.
- If you use Logitech Options or Logi Options+, the device name shown in the software identifies the model and tells you whether battery warnings are available for it.
- Search Logitech Support for that model number and open its battery guide. Do not rely on a pattern you saw on a different Logitech mouse.
Read the LED signal at power-on
Logitech’s support article on battery indicators states the principle plainly: “Your mouse uses LED lights to indicate battery status.” (Logitech Support, “Mouse battery status indicators.”) On most models the status light is visible only briefly. The general guide says the LEDs light when the mouse is turned on and then turn off to conserve power, so you need to look right after switching the mouse on.
Free tools Windows power users keep installed
One-click scans. No signup required.
The timing differs by model. On the M535, M336 and M337, the top LED stays lit for about 10 seconds after power-on. On the G304 and G305, a red warning blinks for about 30 seconds after the mouse is switched on. If you miss the first few seconds, switch the mouse off and on again.
#1 Best Overall
- The next-generation optical HERO sensor delivers incredible performance and up to 10x the power efficiency over previous generations, with 400 IPS precision and up to 12,000 DPI sensitivity
- Ultra-fast LIGHTSPEED wireless technology gives you a lag-free gaming experience, delivering incredible responsiveness and reliability with 1 ms report rate for competition-level performance
- G305 wireless mouse boasts an incredible 250 hours of continuous gameplay on just 1 AA battery; switch to Endurance mode via Logitech G HUB software and extend battery life up to 9 months
- Wireless does not have to mean heavy, G305 lightweight mouse provides high maneuverability coming in at only 3.4 oz thanks to efficient lightweight mechanical design and ultra-efficient battery usage
- The durable, compact design with built-in nano receiver storage makes G305 not just a great portable desktop mouse, but also a great laptop travel companion, use with a gaming laptop and play anywhere
| Mouse (per Logitech’s official guide) | Healthy charge | Low charge | Critical level or action |
|---|---|---|---|
| General Logitech example chart | Three green LEDs = 100%; two green = 66% | One green = 33%; one red = 10% | Not stated in the general guide |
| M535, M336, M337 (top LED) | Solid green = good | Blinking red = low | Solid red = replace the battery |
| MX Master | Three green = fully charged; two green = good | One green = low | One red = recharge |
| G304, G305 | Not stated in the guide reviewed | Red = below 15%; blinks for 30 seconds after power-on | Not stated |
| G602 | Not stated in the guide reviewed | Flashing light-blue LED | Not stated |
| G900, G903 | Battery level shown for seven seconds at power-on, or while off and connected to an active USB power source | One flashing red bar = 15% or less | Plug the mouse in to charge |
| Signature AI Edition M750 | Steady green = 100% to above 5% | Pulsing red = critical level (described as about one month of median use) or below | Uses one AA alkaline battery |
The general chart is an example, not a guarantee for every Logitech mouse. Treat the model’s own guide as the authority. The percentage figures and the 15% and 5% thresholds come from Logitech’s support pages for those specific models and are not measured on your unit. Logitech’s guide pages do not show a revision date in the versions reviewed, so if your mouse’s light disagrees with its guide, check the current guide for your model before drawing conclusions.
Recharge or replace?
A low signal means different things depending on whether the mouse is rechargeable or uses a replaceable battery. The guide for your model tells you which.
Rank #2
- Compact Mouse: With a comfortable and contoured shape, this Logitech ambidextrous wireless mouse feels great in either right or left hand and is far superior to a touchpad
- Durable and Reliable: This USB wireless mouse features a line-by-line scroll wheel, up to 1 year of battery life (2) thanks to a smart sleep mode function, and comes with the included AA battery
- Universal Compatibility: Your Logitech mouse works with your Windows PC, Mac, or laptop, so no matter what type of computer you own today or buy tomorrow your mouse will be compatible
- Plug and Play Simplicity: Just plug in the tiny nano USB receiver and start working in seconds with a strong, reliable connection to your wireless computer mouse up to 33 feet / 10 m (5)
- Better than touchpad: Get more done by adding M185 to your laptop; according to a recent study, laptop users who chose this mouse over a touchpad were 50% more productive (3) and worked 30% faster (4)
- Recharge: On the MX Master, one red LED means the mouse should be recharged. On the G900 and G903, a flashing red bar at 15% or less means you should plug the mouse in to charge.
- Replace: On the M535, M336 and M337, solid red means the battery should be replaced, while blinking red means the charge is low but not yet at that stage. On the M750, the guide specifies one AA alkaline battery.
- Do not assume the battery type: The AA alkaline requirement applies to the M750 as stated by Logitech. For any other model, confirm the battery type in that model’s guide before buying a replacement.
Check the level in Logitech software
If the LED is hard to read or your model is not listed above, supported Logitech software can show battery status or send low-charge warnings. Logitech’s support material says Options can provide low-charge warnings in general. Its M750 guide specifically refers to Logi Options+ warnings. The G602 support page describes checking battery status in Logitech Gaming Software. Software support depends on the device, so if your mouse does not appear in the software’s device list, rely on the LED guide for your model.
When the light is unclear
Work through these steps in order:
- Confirm the model number from the underside label and open its official guide.
- Switch the mouse off and on, and watch the LED within the window the guide gives: about 10 seconds for the M535, M336 and M337, and 30 seconds for the G304 and G305 red warning.
- Check Logitech Options or Logi Options+ for a battery status or low-charge warning if your model supports it.
- For a rechargeable model, plug it in to USB power and charge it fully before judging the signal again. On the G900 and G903, the battery level appears when the mouse is connected to an active USB power source.
- For a replaceable model, install the battery type the guide specifies. For the M750, that is one AA alkaline battery.
- On the G304 and G305, Logitech notes that other LED functions can take priority, so a missing red warning does not by itself prove the charge is adequate.
If the light still disagrees with the guide after a full charge or a fresh battery, contact Logitech Support with your exact model number.
Quick Recap
Best Value
- Logitech MK470 cordless combo features a compact modern designed keyboard with low-profile scissor keys, a number pad and a layout optimized for Windows
- This wireless keyboard and mouse set also features a comfortable, ambidextrous 3 button mouse with high precision optical tracking and mechanical scroll wheel, Sensor resolution: 1000 DPI
- Whisper quiet keyboard and lab-tested, noise-reduced mouse means an ultra quiet work experience for you and those around you both in the office and at home
- Simple plug-and-play USB nano receiver offers a strong reliable 2.4 GHz wireless connection with 10 m (33ft) of range(1) (1) Wireless range may vary based on environmental and computing conditions
- Auto-sleep feature saves battery life, allowing for 36 months of keyboard use and 18 months of mouse use(2) (2) Battery life may vary based on user and computing conditions
Rank #4
- 【Compatible Model】:This 602535 Replacement Battery Compatible with 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 910-004362 910-004374 533-000120 533-000121 533-000171.【Please note that the batteries numbered 533-000088 or AHB303450 in some MX Master mice are not suitable.】
- 【High Capacity Long Life】:1200mAh High-capacity Replacement Battery for Logitech MX Master 2/2S/3/3S, MX Anywhere 2/2S/3/3S,MX ERGO Wireless Mouse (AHB572535).
- 【High Quality Li-ploymer Battery】:Each battery has undergone strict quality inspection and testing. The built-in A+grade high-quality batteries can effectively prevent overcharge, overdischarge and overheat protection, short circuit protection, and durable.
- 【Friendly Tips】: Please compare the connector specifications and polarity according to the display diagram before purchasing,the red wire is the positive "+"、 and the black wire is the negative "-"、White wire is NTC，Do not reverse-charge or reverse-connectreverse. The primary battery of some products has no plug or mismatched plug or mismatched polarity. It doesn't matter, you can cut and solder the plug directly or use our heat shrinkable insulating sleeve to connect the same color wire.
- 【After-sales Service】:If you have any problem after installed the battery, we will refund you or send you a replacement, please contact our support team by email the first time!
Rank #3
- Scroll smarter: With Logitech Signature M650 Wireless Mouse you get line-by-line precision for documents and super-fast scrolling for long web pages; simply switch modes with a flick of the SmartWheel
- Upgrade your comfort: This mouse provides long hours of comfort thanks to its shape, soft thumb area and rubber side grips that keep your hand snug. Sizes and handedness available.
- Connect the way you like: Connect this cordless computer mouse in an instant via Bluetooth Low Energy or Logi Bolt USB receiver
- Less noise, more focus: Whether working at the office or at home, Logitech Signature M650 is a quiet mouse, allowing you to enjoy 90 percent less click noise with SilentTouch technology*
- Customizable side buttons: Customize the side buttons on the computer mouse with Logitech Options+, available on Windows and macOS, to your favorite shortcuts – like back/forward or copy/paste
Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon at the time of purchase will apply.
