Black and Decker offers cordless models of pole saws. They’re my top choice for cordless since they’re very easy to use, reliable, and reasonably priced. They also include a nice carrying case and scabbard (shield for the cutting blade) which doubles as a tool holder.
Here are the two models of cordless pole saws offered by B&D:
Black and Decker NPP2018 Review
Black and Decker LPP120 Review (my top pick)