Sorry, the novak has a 9 volt limit, I read you are running 4 cell. 14.8 v.
The wattsup meter will handle 60 volts, 50 amps continuous, 100 amp burst.
The nicest thing about the wattsup meter is it retains the highest amp draw during the run.
(That would be the peak amp reading)
To get this reading it goes between the battery & esc. After running the truck only unplug the meter from the esc. It will scroll thru all the peak readings.
CAUTION. Don't exceed 130 amps. (It could ruin your meter)
This one does show up to 80 volts, I could not find info on the other one. They do have a ? addy though.
http://api.viglink.com/api/click?for...13292888698601