The Milwaukee M18 1-1/4 in Aluminum Toggle Switch Bottom Battery Transfer Pump brings cordless, metal-built reliability to every water- or liquid-transfer task. Designed for wet environments and demanding job sites, this pump is ready to move liquids quickly without tying you to a cord or a gas engine.
What makes this pump stand out
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Cordless convenience with M18 power — Operated by an M18 battery, so you can move liquids where outlets aren’t available and work in tight or remote spaces.
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Aluminum housing with corrosion resistance — Built to endure frequent exposure to water, damp environments, and compatible with a variety of liquids over time.
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Bottom intake design for versatile suction from the bottom of tanks, sumps, or containers, helping you keep priming simple and consistent.
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1-1/4 in discharge connection — A common, easy-fit size that pairs well with standard hoses and fittings for quick setup.
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Brushless motor technology for efficient performance and longer run times on battery power.
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Rugged toggle switch operation— Simple on/off control at your fingertips, even in awkward or cramped spaces.
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Max head of 17 ft — Capable of lifting water from lower basins, trenches, or tanks up to 17 feet to a drain or higher point.
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Compact, portable design — Weighing 11.4 lbs with a low-profile footprint (6.25" height, 5" inlet), it’s easy to move between sites or position in tight corners.
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Wide operating range — Handles typical wet-work environments with a maximum liquid temperature of up to 120°F, making it suitable for water and many non-aggressive liquids.
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Long-term reliability backed by a 5-year warranty — Milwaukee’s warranty underscores confidence in durability and performance on the job.
Ideal uses and real-world scenarios
- Transferring rainwater or sump water from basements, crawl spaces, or utility rooms where power outlets are not nearby.
- Moving liquids on construction sites, garages, workshops, or boats where a portable, battery-powered pump is a practical solution.
- De-watering small lakes, planters, or temporary reservoirs where quick setup and easy mobility matter.
How this pump helps you work smarter
- Eliminates the need for extension cords or cords and gas-fueled pumps in tight spaces, reducing setup time and trip hazards.
- Aluminum housing extends life in damp environments, so you can deploy the pump repeatedly without worrying about corrosion.
- Bottom suction helps you pull liquid from the lowest point, minimizing air pockets and improving transfer efficiency.
- With a 17 ft maximum head, you can relocate liquid to a drain or a higher point without searching for a nearby outlet or generator.
Practical tips for best results
- Pair the pump with a compatible M18 battery of adequate capacity to balance runtime and weight for your specific transfer tasks.
- Use the 1-1/4 in discharge connection with standard hoses or adapters to create a secure, leak-free setup.
- Rinse and dry after use if pumping non-potable liquids, and store in a cool, dry place to maximize longevity.
