What is the current draw from these electric motors? We are powering them with a 1.5v AA battery and want to know how long the battery will last

Don't know the current draw, but I have run one of these motors for an hour at three volts.

How large are the motor holders?

The holders snap around the motor housing. Each holder has a hole that can be used to mount to a base of some sort with a small screw or bolt.

How can I understand which motor is what volt? There is no label to understand the voltage of the motor

The motors are designed to be used with different voltages from 3 volts to 9 volts. The no load speed of the motor varies from 9,000 RPM to 25,000 depending on the voltage.

Brand	EUDAX
Manufacturer	EUDAX
Colour	Silver and Red
Item Weight	167 g
Package Dimensions	18.21 x 11.3 x 4.39 cm; 167.26 g
Item part number	EH-6SET-WCL
Voltage	3 Volts
Battery type	Alkaline
Are batteries included?	No

EUDAX 6 Set DC Motors Kit, Mini Electric Hobby Motor 3V -12V 25000 RPM Strong Magnetic with Shaft Propeller , 2 x AA Battery Holder,9V Battery Clip Connector,Plastic Wheels for DIY Science Projects

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