My newly purchased disposable vape has a 350mAh battery and would like to know what is the lifespan of a disposable vape battery?

My newly purchased disposable vape has a 350mAh battery and would like to know what is the lifespan of a disposable vape battery?
While vaping a disposable vape, I suddenly tasted a burnt flavour. What is the reason for this?
The disposable vape has run out of vape fluid, want to know What kind of battery is used in disposable vapes and, convenient for me to dispose of it properly.
Worried about disposable vapes suddenly having no vape juice to interrupt the vaping experience, so want to know when your disposable vape is almost empty?
The disposable vape doesn’t draw any vapour anymore, maybe it’s running out of vape juice, can I refill it with e-liquid?
I want a vape with moderate nicotine stimulation and my friend recommended me OKK pods. What percentage of nicotine is in OKK pods?
I want to buy a RELX vape but before I do, I want to know what is the lifespan of a RELX device?
Does anyone else have the same situation, and why is my vuse not hitting but lighting up? I’ve been using it for a while now.
I’ve recently been tempted to purchase a RELX vape, but I must first know how many cigarettes are in a RELX?