Battery powered yard tools

So, I have gas powered yard tools. However, I work overseas and am back for 30 days every 90 days. The individual that does the yard while I am gone has a bad shoulder, so starting the equipment is difficult for her. So, I need to buy battery powered tools. What brands are you using, if anyone on this site uses battery powered ones....

Reading reviews online is a crapshoot, too many paid sites.

Stihl? Husky? Dewalt?

Want to buy once, cry once.

Thanks