Turnigy 7in1 Mega Watt Meter and Servo Tester – Review

by Oscar

As I am building my DIY motor thrust measuring station, I was looking for a decent yet simple watt meter. This is an essential tool if you as you progress in the RC hobby. Check out my post about tools and equipment for multirotor.

banggood

turnigy-hobbyking-mega-meter-watt-meter-voltage-servo-tester

I came across this Turnigy 7in1 Mega Meter from Hobbyking, that is able to do a lot of useful things all by this compact device. I was sold by the specification, and the affordable price. For $40 you get the following features:

  • Battery Cell/Voltage Checker
  • Battery Internal Resistance Checker (check Lipo battery health)
  • Watt Meter (Amps/Watts/Volts)
  • Servo Tester
  • Optical Tacho (give you motor/propeller RPM figure, used in Thrust calculator)
  • Temp Gauge
  • Thrust Calculator
  • Battery Internal Resistance Meter

First impression is the quality is actually not bad. There is a temperature probe, input/output wires and a cable for checking lipo internal resistance provided. You need to solder your own connectors to the wires.

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However there are a few drawbacks about this unit.

  • It can’t run servo tester and watt meter at same time, if you want to test your motors with watt meter, you will need an external servo tester to control the ESC.
  • The servo tester doesn’t have centre servo option, it’s got a knob, but it takes some effort to turn it exactly 1500us.
  • Quite a few people complained on the product page that their unit has a faulty voltage reading, in the watt meter page. However mine seems fine, maybe a quality control issue.

Here is the manual for my future reference.

turnigy-mega-meter-watt-servo-tester-voltage-checker-manual (1) turnigy-mega-meter-watt-servo-tester-voltage-checker-manual (2) turnigy-mega-meter-watt-servo-tester-voltage-checker-manual (3)

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turnigy-mega-meter-watt-servo-tester-voltage-checker-manual (7) turnigy-mega-meter-watt-servo-tester-voltage-checker-manual (8)

 

Here are the spec.

  • Dimensions: 95.3mm x 72.8mm x 21.5mm
  • Weight: 85g
  • LCD Screen Size: 52mm x 30mm
  • Max Input Voltage: 60v
  • Voltage Display Resolution: 0.001v
  • Max Current: 100A
  • Shunt Resistance: 0.001ohm
  • Displayed Resolution A: 0.01
  • Temperature Resolution: 1 Celsius / 1 Farenheit
  • PPM Signal Output: 750uS ~ 2150uS
  • Prop Blade Measuring Range: 1~5
  • Prop RPM Range: 1~60,000 RPM
  • Includes:
    • Instructions
    • Power Leads
    • Temp Sensor Lead

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3 comments

Dwight Edman 18th February 2022 - 11:08 pm

+What are those cable connectors called. I have the meter but no cables. How can I make them and what is the nature of the other temp and servo connector cables?

Reply
Jean Pelletier 10th January 2020 - 8:01 pm

Hi
Where can I buy the mega meter, Hobbyking don’t have

Reply
Oscar 13th January 2020 - 4:35 pm

It’s quite an old product and probably discontinued. Just search for “power meter” and there should be newer versions.

Reply