The Lenovo IdeaPad 3 15 Laptop, model number 81X800ENUS, ships with a Integrated 35Wh, Lithium-Polymer Battery, which within this configuration, has a battery life of up to 7 hours, depending on the work the device is performing. Be sure all Operating System updates have downloaded and installed. The update process will use more battery life than normal. Heavy workloads like installing updates will increase system heat. This is normal. If you are getting substantially less battery life, first, set your screen brightness at less than 100-percent - try 80-percent to start with. Then, be sure Battery conservation Mode is turned off. This power management setting should only be used when the laptop is plugged in all the time. It will prolong overall battery life by only charging the battery to 60-percent of capacity. Here is a link to instructions for turning off Battery Conservation Mode: https://support.lenovo.com/us/en/solutions/ht103159. Also check what programs are running in the background on the computer. Be sure only the programs you want running in the background are. These programs will drain the battery. Here is a link to information about how to find out what programs are running in the background on your Windows 10 computer and how to manage them for better system performance: https://www.windowscentral.com/how-prevent-apps-running-background-windows-10. Then, finally, be sure any software you installed is compatible with Windows 10. Incompatible software will drain the battery at a faster rate. There is no need to install Microsoft Office software. The software is already part of the operating system, you just need to activate the software with a purchased product key. If you have installed a copy of Microsoft Office, this is conflicting with the existing copy on the system and this will slow your system down. If you have installed a 3rd party anti-virus program, be sure that Windows Defender is turned off and that the trial version of McAfee Anti-Virus software is uninstalled. There can only be one anti-virus program on the system. You may need to restore your system to original factory default settings if any of the programming errors have occurred. You can do that by typing "restore" in the Cortana search window. Just click on the magnifying glass icon at the bottom left of your Windows 10 Desktop. Click on "Reset This PC" Then click on "Get Started" and follow the on screen directions to restore to factory defaults. If the problem persists, we recommend you contact Lenovo Tech Support at: 877-453-6686.

That will depend on the requirements and compatibility of the specific APP you want to run. This Lenovo IdeaPad 3 15 Laptop, model number 81X800ENUS, ships with Windows 11 S-Mode 64-bit Operating System installed. Windows 11 S-Mode provides added security by only allowing APPs available ( and therefore certified by Microsoft) at the Microsoft Store. If you don't need the added security or you need to install APPs not available at the Microsoft Store, you can switch to standard Windows 11 Home 64-bit Operating System, at no additional cost. We recommend you check with the specific APPs software publisher's web site, of the specific APP you want to use, for their compatibility with Windows 11 S-Mode 64-bit operating system and the minimum/recommended hardware requirements (Is a Graphics card required, the processor speed and the minimum required system RAM and the minimum available hard drive space) to run their program, then compare those requirements to this system's configuration. If you choose to switch out of S-Mode for Windows 11 Home: Here is a link to instructions for switching from Windows 11 S-Mode to Windows 11 Home: https://support.microsoft.com/en-us/help/4456067/windows-10-switch-out-of-s-mode

Here is a link to the complete parts list for this Lenovo Smart Tab M10 Plus Tablet, with Alexa Built in, from a Best Buy advertising partner: https://pcsupport.lenovo.com/us/en/products/tablets/m-series-tablets/tab-m10-fhd-plus-with-amazon-alexa/za6m/za6m0007us/parts/display/model

This Lenovo Legion Tower 5 AMD Gaming Desktop Computer, model number 90RB001LUS, can support up to 128GB DDR4-3200MHz RAM within 4 RAM DIMM Slots available. We recommend you consult with your certified technician about your RAM upgrade options.