I ordered one of these wattmeters the other day -
it arrived this lunchtime.

I made up a couple of leads to adapt the Deans connectors
on the wattmeter to the standard Tamiya connectors that
I have on all my battery packs.

The wattmeter seems to 'do what it says on the tin'. I managed
to get up to 0.8A and 6 watts when I hooked it up to my
brushless esc. and motor (0.8A x 7.74v = 6.192 watts )

Richard

Special for Dave M ....

Which Mermaid to watch ?????

BTW - the colourful mermaid will be used as a logo on the hull of my boat !

Richard

HI Richard
You posed this question in a previous post. I responded there but am posting a copy here also:
Should do the job providing the max amps capability is sufficient.
Not familiar with this particular model but it looks like you have to press a small push button to select the options.
Watts is really the most useful as you will know your voltage and can calculate the amps by dividing the watts by the voltage. This will not be 100% accurate as it assumes the voltage remains the same under load.
Using the wattmeter you can ensure that you are not exceeding the motor's rating.
You can check initially by holding the model in water and running up to full speed. Make sure you do not drench anyone you like . This will give you a higher reading than when the boat is on the water and hopefully confirm you are within the rating.
I can't wait to see the pics of you looking thro' binoculars