Why the transfer format matters more than the battery
2771-20 is relevant when water must move through inlet and discharge hoses under the model’s permitted conditions. It solves a different access problem from a submersible utility pump or a stick inlet. Begin with the water location and discharge route, then decide whether M18 power suits the setup.
Price hoses and working head with the pump
The complete arrangement includes compatible hoses, fittings, required priming and a permitted discharge point. Maximum flow figures are not a measurement of your installation. Check the documented performance against the actual lift and hose run before selecting a pump.
Read the allowed liquid and temperature limits
Water-heater and leak work can involve liquids outside a pump’s allowable temperature or cleanliness range. Verify those limits rather than relying on the trade name of the task. We have not measured flow, runtime or dry-running protection; this is a configuration and application assessment.