Had an interesting chat in Global earlier, and I whipped together a quick spreadsheet that explores death by energy rot. There are quite a few assumptions that have major effects, but oh well. Thought it was an interesting enough exercise to toss out. (And, since I didn't actually put it together with the objective of publicly releasing it, it's quite ugly looking too.)
Some more interesting elements:
L7 won't die from it.
L8 has the shortest life.
Stabilizes at approximately 3:10.
Editable version (not responsible for any vandalism!): goo.gl/Dq7KS
No-edit version: goo.gl/U0XyR