iMac 2020 27 inch a built-in battery

Hello,

I am trying to ship my iMac 5K 27 inch (2020 model) to another country. (I already considered possible damages and risks associated with shipping a fragile machine overseas so yeah I know.)

A shipping company that I will be using require me to declare any product containing battery (apart from already declaring a large-sized household electronics etc) but I am unsure if iMac also contains one. It is a desktop, so technically it does not have any, but I heard there may be a small lithium battery? to keep time & date something (something called PRAM? but then google search also returned that this practice has been discontinued) ..

I've looked through specification pages and searched but had no luck finding a clear information whether it contains one or not. I also read system power settings and saw AC Power only, vaguely assuming that there is no internal battery but AC Power (powered by outlet).

If someone knowledgeable in iMac hardware can clarify that iMac 2020 model does indeed have / or does not have a built-in battery (regardless of the size), that would be greatly appreciated!!

Thanks