Hydraulic fluid is not suitable for use in the Milwaukee M18 18-Volt 1/4 HP Lithium-Ion Cordless Transfer Pump. This pump is specifically designed for water transfer applications and is not compatible with hydraulic fluids or other non-water liquids.
Milwaukee Cordless Self-Priming Transfer Pump, Tool Only, 18 Volts, 7.5 GPM, 3/4in. Ports, Model# 2771-20

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Shipping:
Backordered: Order now to reserve yours -
Estimated to ship 10/27/26Store Pickup:
Not Available
- The industry’s first cordless water transfer pump with the fastest setup in the marketplace
- An innovative self-priming pump, you can connect and go quicker than ever
- Move water at up to 480 gallons per hour
- Ideal for Water Heaters: Empty a 50 gallon water heater in under than 7 minutes
- Splash-Proof Battery Compartment: Reduces battery exposure to water
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Description
Key Specs
Reviews
Q & A
Accessories
Warranty
Compare
Product Summary
What's Included
- (1) M18™ Transfer Pump (2771-20)
Downloads
Features + Benefits
- The industry’s first cordless water transfer pump with the fastest setup in the marketplace
- An innovative self-priming pump, you can connect and go quicker than ever
- Move water at up to 480 gallons per hour
- Ideal for Water Heaters: Empty a 50 gallon water heater in under than 7 minutes
- Splash-Proof Battery Compartment: Reduces battery exposure to water
- Allows for quick and easy setup to start transferring water faster and less down time
- Empty Two 50-Gallon Water Headers Per Charge: 144 gallons moved on an M18 REDLITHIUM XC3.0 Battery Pack
- Up to 18 ft. of lift and produces up to 75 ft. of head height
- Durable Brass Construction
- Viewing window helps identify blockages
- Part of the M18 System - Fits All M18 Batteries
Key Specs
| Attribute | Specification |
|---|---|
item# | 55842 |
Brand | Milwaukee |
Manufacturer's Warranty | 5 year limited warranty |
Ship Weight | 8.99 LB |
Max. Flow | 450 GPH |
Port Size | 0.75 in |
Volts | 18 |
| Attribute | Specification |
|---|---|
Solar Powered | No |
Max. Head Pressure | 75 ft |
Vertical Lift | 18 ft |
Housing Material | Plastic |
Product Weight | 7.9000 lb |
Dimensions L x W x H (in.) | 13.25 x 6.0 x 5.75 in |
Reviews
Questions & Answers
Questions
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· a month ago
How does this work with hydraulic oil? Can it lift oil 10 ft?
1 answer-
ProductExpert10· a month ago
Helpful?
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· a month ago
How does it work?
1 answer-
ProductExpert10· a month ago
The Milwaukee M18 Transfer Pump (2771-20) is a cordless, self-priming water pump that uses an M18 battery to automatically pull water through one hose and pump it out through another, moving up to 7.5 gallons per minute (480 GPH) for fast and convenient water transfer.
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· a month ago
Can this be used to pump def?
1 answer-
ProductExpert6· a month ago
The pump could not be used to pump diesel (DEF).
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· a month ago
So if a unit breaks, and it has a mfg 3-year warranty, can we send it somewhere for repairs?
1 answer-
ProductExpert6· a month ago
You would contact the manufacturer for warranty repairs and local service centers.
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· a year ago
Does it come with hoses
1 answer-
ProductExpert13· a year ago
Hoses are not included.
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· 2 years ago
What's the discharge pressure?
1 answer-
ProductExpert11· 2 years ago
The pump is not designed to build any significant pressure. The maximum discharge flow is 480 gallons per hour (8 GPM).
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· 2 years ago
what is the hp of this pump
1 answer-
ProductExpert11· 2 years ago
The pump is a 1/4 HP.
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· 3 years ago
How long do batteries last typically?
1 answer-
ProductExpert11· 3 years ago
The runtime on a 3.0 Ah battery is 2.9 hours, on a 5.0 Ah is 4.8 hours and on a 12.0 Ah it is 11.5 hours.
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· 3 years ago
how well does this work on differential ouls
1 answer-
ProductExpert6· 3 years ago
The pump is for use with water only, it cannot be used with any kind of oil.
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· 3 years ago
Are the 3/4” ports NPT or GHT?
1 answer-
ProductExpert6· 3 years ago
The ports would be 3/4" GHT.
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Milwaukee M12 Stick Transfer Pump, 12 Volts, 9 GPM, 3/4in. Ports, Model# 2579-20
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Warranty
Manufacturer's Warranty
5 year limited warranty
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Item # 55842
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Item # 4375192
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Specifications
450 GPH
3,600 GPH
744 GPH
594 GPH
0.75 in
2 in
1 in
-
18
220
115/230
115/230
No
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-
75 ft
98 ft
141 ft
134 ft
18 ft
-
8 ft
50 ft
Plastic
-
Cast-Iron
Cast-Iron
7.9000 lb
79.0000 lb
35.5000 lb
35.5000 lb
13.25 x 6.0 x 5.75 in
19.0 x 12.0 x 14.0 in
16.0 x 10.75 x 8.0 in
16.0 x 10.75 x 8.0 in
-
12.1
7.8
6.4
-
-
61
58
-
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0.75
0.5
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