VEVOR Cordless Submersible Water Transfer Pump, 528GPH, Portable Sump Pump with G3/4" Garden Hose, Compatible with Dewalt 20V MAX Battery (No Battery), Electric Utility Pump for Pool, Garden, Pond
You can use it in lightly dirty water, but not muddy water with sediment. For that, you need a trash pump or dirty-water sump pump rated for solids (e.g., 25–30 mm particles or more).
This pump is a submersible transfer pump, so it does not need a large minimum water depth to start pumping.
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If your DeWalt batteries are modern 18V XR / 20V MAX lithium slide packs, Yes, they will work
If they are older 18V NiCd/NiMH style, No, they are not compatible