PS here's the simple BBCode I was trying:
[table]
[tr]
[th]Battery[/th]
[th]Hours sleep[/th]
[th]Wh measured[/th]
[/tr]
[tr]
[td]Baseus[/td]
[td]24[/td]
[td]74[/td]
[/tr]
[tr]
[td]Nitecore[/td]
[td]13[/td]
[td]41[/td]
[/tr]
[tr]
[td]RavPower[/td]
[td]28.5/td]
[td]88[/td]
[/tr]
[tr]
[td]Renogy(12V)[/td]
[td]74/td]
[td]211[/td]
[/tr]
[/table]