@Boing123
Teams is one of the worst when it comes to munching battery.
It's become slightly better on Mac and PC recently with the new Teams app being released, but its still bad.
I am mostly using it on my iPhone rather then the iPad and its actually alright on the iPhone, still draining but not crazy bad.
You can change a few settings to maybe save a bit of battery such as enable "reduce data usage/low bandwith mode) turn camera off, making sure you have decent Wi-Fi coverage and so on. But it will still be quite bad.
Its no comfort but Teams on the PC is even worse. I'm on a brand new Windows 11 machine (HP elitebook 840) at work with the latest Teams client and 3 hours in a teams meeting and its time for me to plug in the charger.
Not sure if the new Teams Client will end up being released on mobile devices, but from what I can remember its two fairly different versions and the new Teams client on the desktop computers are based on the mobile client (could be wrong here tho).