A One-Handed Cordless Reciprocating Saw can be used for pruning small trees around the home, in orchards, and at nurseries. Powered by a rechargeable lithium-ion battery and featuring variable-speed control, some tools can reportedly sever as many as 90 branches (up to 3 inches in diameter) per charge. Some makes/models, like the Einhell listed below, are specifically for tree trimming and come with a detachable clamping jaw for gripping/holding the branch being cut. Others are non-specific and can also be used as a wood and metal cutting tool.