--- title: "Checking and Charging the Li-Ion Batteries" slug: "checking-and-charging-the-li-ion-batteries" description: "Only use Li-Ion Batteries designed for use with the device and approved by NavVis." updated: 2025-05-16T11:51:30Z published: 2025-05-16T11:51:30Z --- > ## Documentation Index > Fetch the complete documentation index at: https://knowledge.navvis.com/llms.txt > Use this file to discover all available pages before exploring further. # Checking and Charging the Li-Ion Batteries Only use Li-Ion Batteries designed for use with the device and approved by NavVis. 1. **Check the Li-Ion Battery level** Press the button on both the supplied Li-Ion Batteries to check if they need charging. You need at least 51-75 % full to begin scanning (3 of the 4 lights on). ![A person holds a rechargeable battery pack displaying charge indicators and safety information.](https://cdn.document360.io/bf174766-fa1a-4fe1-a4d7-b1db1e7cb996/Images/Documentation/_8XL9417.JPG) The LEDs on the Li-Ion Battery indicate different levels of charge: ![](https://cdn.document360.io/bf174766-fa1a-4fe1-a4d7-b1db1e7cb996/Images/Documentation/checking-and-charging-the-li-ion-batteries-image-qczufxyi.png) 1. **Assemble the Battery Charger** Insert the Battery Power Cable to the Battery Charger. Insert the Li-Ion battery, make sure it is fully inserted. ![A battery charger connected to a power outlet with various cables on the floor.](https://cdn.document360.io/bf174766-fa1a-4fe1-a4d7-b1db1e7cb996/Images/Documentation/_8XL0688.JPG) Connect the Battery Power Cable to an appropriate power source: - The LED indicator on the Battery Charger will turn red as it is charging and green once the Li-Ion Battery is fully charged. - Disconnect the Li-Ion Battery once charging is complete. - Dispose of the Li-Ion Batteries properly in compliance with local regulations Contact NavVis Support for instructions on the correct recycling procedure. --- ****Can I buy additional batteries?**** Only **Li-Ion Batteries designed and approved by NavVis** should be used with the device. Using unapproved batteries may damage the equipment or pose safety risks. Refer to [Accessories for your NavVis MLX](https://knowledge.navvis.com/docs/accessories-for-your-mlx) ****How do I check the battery level before scanning?**** Press the button on each of the supplied Li-Ion Batteries. You should see 3 out of 4 lights (indicating 51–75% charge) before starting a scan. ****What do the LEDs on the Li-Ion Battery indicate?**** The LEDs display the battery’s charge level: - **1 light:** 0–25% - **2 lights:** 26–50% - **3 lights:** 51–75% (minimum recommended to begin scanning) - **4 lights:** 76–100% ****How do I charge the Li-Ion Batteries?**** - Connect the Battery Power Cable to the Battery Charger. - Insert the Li-Ion Battery into the charger, ensuring it is fully seated. - Plug the power cable into an appropriate power source. - The LED on the charger turns **red** while charging and **green** when fully charged. - Disconnect the battery after charging is complete. ****Can I leave the battery in the charger after it's fully charged?**** It is recommended to **disconnect the Li-Ion Battery** once it is fully charged ****What should I do with Li-Ion Batteries that are no longer usable?**** Li-Ion Batteries must be **disposed of in compliance with local regulations**. Contact **NavVis Support** for instructions on proper recycling procedures. ****What is the charging time for the battery**** 100 min @ 80%, 150 min @ 100%