My plans (very rough ideas)

[ScarletWaterscape]

Plan one is to drown myself by hyperventilating and then knocking myself out in a bath, face down, ending my life (hopefully)
Plan two is to take some old Lithium Ion batteries I have around and pierce them with a metal screwdriver, hopefully taking me out with a fire or a small explosion

 

[lukas19]

Ouch both methods sound dodgy!

 

[ScarletWaterscape]

Ouch both methods sound dodgy!

Wdym?

 

[mypersonalhell]

I would not count on hopefully. If it fails you will end up in a far worse spot then you are right now. Think it through carefully.

 

[lukas19]

Wdym?

Look in 'Resources' if you are looking for reliable methods both you mentioned are not reliable.

 

[ArchmagePrincess]

Plan One sounds like you're describing shallow water drowning which while not unheard of isn't likely to work either. There are resources here about it though if you look around.

Plan Two sounds like a really bad idea. Dying to fire or an explosion sounds really painful (Survival Instincts will kick in) and won't likely work.

I'd recommend things other than either of these honestly.

 

[locked*n*loaded]

Honestly.................I think you need a Plan C.

 

[nothingbutmybest]

Plan one: It is ridiculously hard to knock yourself out physically, it would be easier to just stab yourself to death (though that is also a bad idea)
Plan two: You'll probably just get severe burns all over, it's a battery not a bomb