"Watt's Up" DC Watt Meter, Power Analyzer, Amp Meter, Amp hour meter, Watthour Meter Features & Specifications


  • Measures DC Amps, Amp-hours, Watthours, Volts and Watts
  • Captures peak current, peak power, and minimum voltage (voltage sag) lasting a fraction of a second.
  • Easily reset accumulated readings using external pushbutton switch.
  • Rugged and dependable. Made in USA American Flagto ISO 9001 (like Hewlett Packard uses) quality standards
  • Rare combination of Voltmeter, DC Amp meter & Amp hour counting, Watthour and power analyzer features. Measures wide range of values not normally found on multimeters or low cost test equipment
  • Powered by the measured circuit or connect an auxiliary battery or DC power source to provided 3-pin socket
  • Reverse connection protection
  • Powerful, 8 MIPS micro-controller
  • Factory calibrated with constants stored in EEPROM. No pots to drift
  • Uses very low resistance (0.001 Ohm) shunt in negative (black wires) leads
  • Small and lightweight
  • Full user's manual includes electrical tutorial
  • One year warranty

WU100, Measurement Specifications


Parameter Range Resolution Accuracy
(worst-case over temperature range)
0-60  Volts*
0.01 V ± (1% + 0.035)
0-100  Amps **
0.01 A ± (2% + 0.06)
0-6554 Watts
0.1 W  
0-65  Amp hours
0.001 Ah  
0-6554 Watthours
0.1 Wh  

* Using auxiliary power/battery input. Minimum is ~4.0 V without it.
** 50 Amps continuous, 3-wire connection. Derate for wire temperatures next to case above 70 Deg C.

  • LCD digital display with two rows of 16 characters. High contrast and readable in sunlight
  • 1% voltage accuracy. 1% typical current accuracy. High resolution and repeatability measurements. Uses DSP to increase resolution and nose immunity
  • 3.8" long, 14 gage, stranded, high flex, high temperature silicone rubber insulated wires. Supplied without connectors
  • Dimensions: 2.8" L x 1.7" W x 0.83" D (70 mm x 44 mm x 21 mm), 2.3 oz., 1.7 oz. without case.
  • Auxiliary power connector (available on our website)
    • works with 4.0 to 60 Volt DC input that can supply at least 7 mA.
    • has Reset signal for resetting meter's accumulated readings.
    • uses 3-pin male crimp connectors for 0.025" square posts on 0.1" centers. e.g. Tyco/AMP AMPMODU Mod.IV series or JR, Hitec or Airtronics RC servo type connectors.
  • Comes in two colors; Onyx, Electric Blue.

    See the Watt's Up Colors in a pop-up window (takes a moment to load).



Watt's Up Specs