To counter that though, the major power tool brands usually have a garden care range… AEG, Ryobi, Makita etc same 18/54V batteries as their power tools and they are fairly robust batteries and certainly be easy to replace.
I use AEG at work here in Oz and I’ve purchased a 18V whipper sniper, pole chainsaw and hedge trimmer kit, all the same batteries.
If you buy cheap no name stuff I agree it’ll be painful to get new batteries etc.