Yes—compare cameras by their published CIPA shot rating, which many camera search/comparison sites list in the specs when available. That’s the standard way to estimate battery life across models.

A useful rule of thumb is that battery life varies a lot by camera type. Among non-DSLR models, superzoom/bridge cameras tend to have the longest battery life, while smaller compact cameras usually have shorter endurance because they use smaller batteries. Newer sensors can also be more power-hungry than older designs.

So if long battery life is a priority, don’t shop by battery rating alone—first narrow to cameras with the features you need, then compare their CIPA ratings within that group. In general, expect better endurance from larger superzoom-style cameras than from slim pocket point-and-shoots.