I think you want to do 2 watts / 8 volts = 0.25 amps as your maximum....the 2 watts / 30 volts = 0.0667 amps is your minimum.

If John is running it at 12 volts, it would be 2 watts / 12 volts or 0.16 amps (160 mA).


However, the "2 watts" is probably the important piece of information here, although that may be a maximum draw amount.

Jay

On 07/09/2017 09:56 PM, Marco Gaxiola via EV wrote:
John,

    The manual I have says: 'Operating Power: DC8-30V/2W', so that could be
at the most: 66.7mA

Marco Gaxiola

On Sun, Jul 9, 2017 at 5:24 PM, John Lussmyer via EV <ev@lists.evdl.org>
wrote:

Anyone know how much 12V power this meter uses?
(yes, I could measure mine - except that it's dash mounted, and just
getting to the power wires is a rather major undertaking.)

--
Worlds only All Electric F-250 truck! http://john.casadelgato.com/
Electric-Vehicles/1995-Ford-F-250
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