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Small rectangular aluminum module with red black yellow wires exposed circuit board multicolor finish

KEHIPI

KEHIPI DC 8-35V to 3.7V 3A 11W Step-Down Power Adapter

SKU CH-SWY4-Q9Y55

Converts 8-35 V DC input to a stable 3.7 V 3 A output with over 95 % efficiency in a waterproof aluminium case

  • Type24V/12V to 3.7V 3A
  • Colormulticolor
  • Weight0.032 kilograms
  • Wide 8 V to 35 V input fits many DC sources
  • Fixed 3.7 V at up to 3 A delivers 11 W
  • Over 95 % conversion efficiency keeps heat low
  • Multiple protections guard against faults and reverse wiring
  • Waterproof aluminum case rated for -20 °C to 80 °C

Purpose and Audience

This compact step-down converter accepts a DC input from 8 V to 35 V and delivers a steady 3.7 V at up to 3 A for 11 W of output power. It suits hobbyists and installers who need to run 3.7 V devices such as small motors, LED displays, navigation units or toy cars from a 12 V or 24 V vehicle or solar supply.

Build Integration

The module measures 35 mm by 26 mm by 21 mm with mounting holes spaced 41 mm apart and 4 mm in diameter. Red and black input leads of 13 to 14 cm connect to the source, while yellow and black output leads feed the load. Its aluminium case provides natural cooling and IP-rated protection against water, dust, moisture and shock, so no extra enclosure is required for most automotive or outdoor installs.

Thermals Noise and Power

Conversion efficiency exceeds 95 percent, keeping heat low during continuous operation. Natural convection through the aluminium housing handles thermal dissipation without a fan, so the unit runs silently. Built-in over-current, over-temperature, reverse-polarity and short-circuit protections shut the output down safely if limits are exceeded. Operating temperature range spans minus 20 to plus 80 degrees Celsius.

Highlights

  • Wide 8 V to 35 V input fits many DC sources
  • Fixed 3.7 V at up to 3 A delivers 11 W
  • Over 95 % conversion efficiency keeps heat low
  • Multiple protections guard against faults and reverse wiring
  • Waterproof aluminum case rated for -20 °C to 80 °C

Specifications

BrandDROK
Type24V/12V to 3.7V 3A
Colormulticolor
Weight0.032 kilograms

Questions about this item

What is the maximum output power the module can sustain continuously?

The module is rated for 11W continuous output power at 3.7V and 3A.

How hot does the aluminum case get during all-day operation?

With over 95% conversion efficiency and natural cooling, the aluminum case maintains low heat generation across the -20 to 80°C working temperature range.

What input wiring must already be in place for installation?

You need a DC source within 8V to 35V connected to the red (positive) and black (negative) input leads, which are 13 to 14cm long.

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