I use a pruning blade in my Ryobi ONE+ 18V reciprocating saw:
Ryobi 18-Volt One+ Cordless Reciprocating Saw (Tool-Only)-P514 - The Home Depot
It's light, reasonably powerful, and no cords = easier to use overhead & while on a ladder.
A quick tip: pruning many types of palm (especially those with narrower frond stalks like sago and fan palms) can be done with a lopper
if you attempt it while the fronds are still green/live. Trimming palms once the fronds have died/dried/hardened is nearly impossible without a saw.