Are cordless heat guns worth it?

Reviewers are split. Across r/Dewalt threads, owners repeatedly note that a 20V battery puts out roughly 400W versus a corded gun's ~1500W, so cordless models run cooler with weaker airflow and burn through batteries fast. The consensus is that cordless is excellent for convenience and small jobs like heat-shrink connectors, but a corded gun is the better choice for sustained or high-heat work.