The New Astro Model 101 Wattmeter is very sophisticated piece of electronic equipment. It contains there digital micro-processors, a 4.096 volt precision reference, five volt power supply and a precision amplifier. The meter contains no battery. It is powered from the voltage source and absorbs about 3 milliamps. A separate receiver battery connector is supplied to allow the meter to be externally powered by any four cell radio receiver battery. The meter will turn on at 4.5volts and will measure any DC voltage up to 60volts.

Reads battery current from 10 ma to 75 amps, voltage from 4 volts to 80 volts, power up to 5000 watts, Milli-amp hours up to 9000 mahr. Now you don't have to guess any more, you can measure and be sure.

Specification :

Amps out  from 10 ma to 70.00 Amps

Amps in from 10 Ma to 10.00 Amps

Voltage from 10 mv to 60.00 Volts.

Power from 1 Watt to 4,000 Watts.

Milliamp Hours from 1 to 96,000

Watt Hours from 0.01 to 5,000

Use it to test a single cell.

Use it to measure motor resistance.

Use it to adjust your motor timing.

Use it to choose the right prop.

Use it ot select your cells.

Connectors : Deans Ultra

Instruction Sheet (pdf file)