[LG V30 Questions & Answers] ChazzMatt:
First we've heard of it. Also you don't say which variant you have? Are you running a custom ROM? Are you running any "battery saver" apps? Have you installed any new apps recently?

* With phone completely turned off, does the battery charge when you plug into charger?

* With phone completely turned off, and then placed on wireless charging pad, does the phone then boot up and turn on by itself? (That's a feature of wireless charging, so curious if other things are broken, too.)

SUGGESTION: Try re-flashing stock image KDZ in Refurbish mode via Dev Patched LGUP. You are hard re-setting anyway, but this will re-install fresh foundation of stock firmware. I see in the Reddit link you posted someone else suggested that two days ago:

and you replied:

In your Reddit thread you mention "Verizon" Pie update, so that means you have VS996. Here on XDA, there are VS996 Oreo and Pie KDZ threads with links to download firmware and Dev Patched LGUP tool to install. I assume you want to keep Pie. Instructions are at bottom of post #2, but I am reposting instructions here. You still have to go there to download the KDZ you will flash. The Mega or Android File Hosts mirrors are probably the fastest to download VS996 30c KDZ. It's 3GB in size.

[VS996][STOCK][PIE]LG V30 VS99630c_00_0904_ARB00.KDZ

https://xdaforums.com/showpost.php?p=79971579&postcount=2

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HOW TO INSTALL DEV PATCHED LGUP

0. UNINSTALL any prior LGUP version. Seriously. Go to Programs folder and delete the LGUP folder if you must.

1. DOWNLOAD THIS DUAL VERSION OF DEV PATCHED LGUP, made by [MENTION=2651082]tecknight[/MENTION]:

https://androidfilehost.com/?fid=11410963190603845019

(Or use attached file from bottom of this post. Thanks to [MENTION=2651082]tecknight[/MENTION]! Please

go here and click the THANK BUTTON

!)

2. Extract LGUP_DualMode.zip to a folder on your PC.

3. Browse into the folder and launch LGUP_Store_Frame_Ver_1_14_3.msi.

Follow the prompts to complete the install.

4. In that folder, right click and select "Run as Administrator" on "SetDev.bat" to set LGUP to developer mode. READ THAT AGAIN.

5. Launch LGUP using the desktop shortcut. NOT from folder icon!

As mentioned before, use UPGRADE, REFURBISH or PARTITION DL modes. REFURBISH and Partition DL are probably best.

WARNING: In LGUP do NOT go messing with modes not mentioned in these instructions. Especially do NOT use Chip Erase.

I don't care what anyone else tells you. If you listen to them, let them help you recover from messing up your phone.

https://9to5lg.com/lgup-1-15-manual-how-to-unbrick-restore-your-lg-devices-with-lgup/

It's all fairly easy. Most people breeze right through this. But if you have any problems, go through this list:

Make sure you in download mode BEFORE opening the patched LGUP file.

This is at the top of the list as some people forget to do that. The remainder are in no particular order. If that doesn't work,

Try different USB port,

Try different USB cable,

Try different computer.

Reinstall

LG mobile drivers on your PC.

Reinstall dev patched LGUP again.

Reboot the computer.

If you ask for help, that's the list of items we are going to give you anyway. ;)