²

superscript two

Unicode code point: U+00B2

³

superscript three

Unicode code point: U+00B3

¹

superscript one

Unicode code point: U+00B9

⁴

superscript four

Unicode code point: U+2074

⁵

superscript five

Unicode code point: U+2075

⁶

superscript six

Unicode code point: U+2076

⁷

superscript seven

Unicode code point: U+2077

⁸

superscript eight

Unicode code point: U+2078

⁹

superscript nine

Unicode code point: U+2079

🔋

battery

Unicode code point: U+1F50B

🔌

electric plug

Unicode code point: U+1F50C