Of course you can go down there? That's literally the lower limit of design voltage?

Below 2,5V is usually when you don't wanna use them anymore

only if you want them to lose capacity fast and become spicy pillows in your lifetime

	▲	clumsysmurf a day ago \| parent [-]
		2.5V is the absolute minimum typically mentioned in spec sheets, 2.8V and above is perfectly fine.