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Haseed 18V-to-12V Step-Down Converter, 2-Pack1 / 7
Product guide

Haseed 18V-to-12V Step-Down Converter, 2-Pack

Haseed’s 18V-to-12V step-down converter is a two-pack adapter set for powering 12V devices from compatible Milwaukee 18V batteries. The listing claims up to 20A and 240W output, with a 30A fuse, but batteries are not included.

At a glance

  • Designed to connect compatible Milwaukee 18V lithium batteries to 12V devices.
  • The listing specifies up to 20A and 240W output.
  • A 30A fuse and several listed electronic protection functions are claimed.
  • Wire terminals are identified as an output connection option.
  • Batteries are not included.
Price
$31.44Save 15%

Reference price: $36.99

Price checked: Nov 14, 2026

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Often bought together

Pros and cons

Pros

  • Two converters are specified in the pack, useful when separate 12V setups are needed.
  • The claimed 12V output and Milwaukee battery compatibility suit projects such as LED lighting, ride-on toys, RC cars and DIY equipment.
  • The listing describes over-current, over-voltage, overload, low-load, short-circuit and over-heat protection.

Cons

  • Requires a compatible Milwaukee battery, which is not included.
  • The supplied feedback includes a report of 18V batteries draining over time, so battery use during idle or prolonged connection is a consideration.

Technical specifications

12 specifications
Identity
BrandHaseed
Model797457493553
ColorRed
Power and battery
Power configurationrechargeable battery
Input voltageDC 18V-20V
Output voltageDC 12V
Maximum output current20A Max
Maximum output power240W Max
Connections and protection
Plug format2 Pin
Number of outlets1
Fuse30A fuse
Pack
Number of packs2

What to know before buying

  • The listing advises removing the battery from the adapter when it will not be used for a long time. Output and protection details are manufacturer claims, not independent performance measurements.

Who is it for?

A good fit for

  • DIY users adapting compatible Milwaukee batteries to 12V LED or work lighting.
  • Owners of listed 12V projects such as RC cars and ride-on toys who can verify their device's current and wiring requirements.
  • Buyers who want two converter units for separate projects.

Less suited to

  • Anyone needing a standalone power supply without a compatible Milwaukee battery.
  • Devices that require a different voltage or exceed the listed maximum output.
Haseed 18V-to-12V Step-Down Converter, 2-Pack · photo 2
Additional product photo 2

Customer reviews on Amazon

4.6 / 5 · 203 ratings
  • 5 stars81%81%
  • 4 stars9%9%
  • 3 stars4%4%
  • 2 stars1%1%
  • 1 star5%5%

Customer feedback describes the converter as working well and easy to install, including a reported use for 12V lighting. Some customers say they would buy more. Battery life feedback is mixed, with one reported concern about 18V batteries draining over time. That matters for setups left connected, especially because the listing advises removing the battery during long periods of non-use. These comments are customer perceptions, not a measure of output or runtime.

Positive themes

  • Customers report that the converter works well and is easy to install.
  • Some customers describe it as worthwhile and say they would buy additional units.

Negative themes

  • Battery life feedback is mixed, including a report of 18V batteries draining over time.

Mixed feedback

  • Reported usefulness for 12V lighting sits alongside a concern about battery drain, making idle-use habits relevant.

Frequently asked questions

Does the pack include Milwaukee batteries?

No. The listing explicitly says the battery is not included.

What output does the converter claim?

The listing specifies DC 12V output, up to 20A and up to 240W.

Which batteries is it intended to fit?

The listing claims compatibility with Milwaukee 18V lithium batteries and names several 48-11-series models. Confirm your exact battery model and connector fit before use.

Should the battery stay attached when the converter is idle?

The listing says to remove the battery if the converter will not be used for a long time.

Haseed 18V-to-12V Step-Down Converter, 2-Pack · photo 3
Additional product photo 3

Alternative options

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