I also have a pole hedge trimmer, a regular trimmer, blower, and weed wacker. All Works and all use the same battery. You can usually buy the tools separately so you don't double up on batteries and chargers. They now have cordless push mowers, a good sized chain saw, and a nice assortment of cordless power tools. (drill, impact, grinder and the like)
I have a works weed blower that I got 2nd hand but the darn thing will run for a minute and stop I let it set for a minute and it starts again. Think maybe the battery is about shot.