notifications – How to disable ‘Slowly Charging’ message

I am looking to disable this intrusive message that pops up. You can not proceed to do anything on the phone until you acknowledge it.
To be clear, I am not looking for ‘tips’ to increase charging efficiency. The phone has a battery pack case – there is no increasing the rate, but due to the fact the battery is attached to the phone, the rate is more than sufficient.
The phone is a Verizon LG G7 – rooted.
I have tried changing the priority levels of the System UI to no affect.
Any ideas?