6V Micro Submersible Water Pump Tests

DC 3-6V Micro Submersible Water Pump. Cheapest model I could find.
Some specs gathered around the web:

  • DC Voltage: 2.5-6V
  • Maximum lift: 40-110cm / 15.75″-43.4″
  • Flow rate: 80-120L/H
  • Outside diameter of water outlet: 7.5mm / 0.3″
  • Inside diameter of water outlet: 5mm / 0.2″
  • Diameter: Approx. 24mm / 0.95″
  • Length: Approx. 45mm / 1.8″
  • Height: Approx. 30mm / 1.2″
  • Material: engineering plastic
  • Driving mode: brushless dc design, magnetic driving
  • Continuous working life of 500 hours

Some specs I measured:

  • Requires about 500mA @ 5V when starting
  • About 150mA @ 5V working current
  • Minimum current about 50mA @ 5V