[NAME]  At this stage I personally would download the latest release of Windows 10 or 11 directly from Microsoft by using the Microsoft Media Creation Tool to create a bootable USB flash drive.  Then I'd boot the XPS from that flash drive and proceed through Windows Setup.  At the point asking where to install Windows, I would choose to delete each partition on the internal disk until the only remaining entry for that disk was a single "Unallocated space" entry, and then choose to install Windows there.Then I would go here to download the UWP version of Dell Update and run that in order to get all of the latest driver and firmware updates available for the system.  (Note: If Windows starts without any WiFi support because it doesn't have a suitable built-in driver, then you'd have to download the WiFi driver manually from the Dell Support site.)As for the power modes you're referring to, I believe offering that within via the native Windows slider requires firmware-level support from the system, since I remember a Lenovo system with a BIOS update that added support for that in order to replace Lenovo's existing similar functionality offered through one of their apps.  And on Windows 11, that slider is no longer available from the system tray.  You have to get to it via Settings > System > Power & battery > Power mode.In terms of battery replacements, I think trying to save a few bucks by going generic on a laptop battery would be penny wise and pound foolish given what can go wrong with a poorly/cheaply made battery, so I can't make any recommendations there.  I doubt you'll find one with meaningfully greater energy capacity in the same form factor though.  And the XPS 13's battery life is quite good anyway even with the standard battery when it's in good condition.
FIrst post so hello to everyone!  Just received an xps 9370 that needs some TLC. How can I download all the original dell software and windows at once?  Should it be done seperately or should I reset windows and dell apps together if so how.  Just wanting to get this thing running optimal. What are the most important apps for this device that will assist in its optimal performance and especially optimal thermal conditions.  It often feels quite warm Id rather run it cooler even if it means cutting back a little on performance, what would be the best way to accomplish this in terms of apps and system settings?  Any good thermal programs available and I norticed my version of windows 10 doesnt offer 2 or 3 power profiles such as cool, optimized, and high performance or ultimate performance.  Also looking for the best program or app to run display. Last item and most critical is my battery, the life of it is pretty much shot, are any of the generic versions of the replacement batttery on the market worth considering?  What would be a good replacement battery and are there any that are considered an upgrade with the same size profile that could be used and considerd longer lasting better performing?    Thats a mouthful so thank you to anyone who takes the time to help me and thanks for listening, 
XPS 9370 3 questions