NOAA's Pacific Marine Environmental Laboratory intends to award a sole-source purchase order to Rose Electronics Distributing Company LLC for custom battery packs. The requirement is for 25 large and 25 small alkaline battery packs that must be compatible with existing TFlex moored data buoy systems. The services are to be performed and delivered in Seattle, WA. Delivery is required by July 31, 2026, or sooner. This is a presolicitation notice, and firms believing they can meet the requirements may submit substantiating documentation to the point of contact within 15 days of the notice's publication.