Anyone try to reverse the process and use mechanical energy to make a light bulb light up?

I have not tried that, but a dc motor can also be used as a generator so I'm sure it will light a small light. Maybe an led? if correctly polarity is observed.

what is the rpm range of this?

I have no idea what typical RPM is, over 60 I'm sure. I gave two of them as gifts to High school students. The units do spin very nicely. RPM? Strange request, since this is typically just an educational science project for kids to help them grasp magnetic field effects by building a motor and pondering it a bit. Far more memorable than looking a pages in a textbook. I have a signal counter but it would be a project to set up to measure frequency.. and the frequency (RPM) would be very voltage dependent. Perhaps you are stuck in analysis paralysis? Just buy one and play with it!

Are battery holders included?

Yes! 4, 3 & 2 AA battery holders are included in the product.

Does the armature come with the wire already wound on it?

Yes it is already wound. I helped my grandson assemble it about two years ago. It was better quality than I expected, and a good value.

Eudax Stem Diy Simple Electric Motor Dc Motors Model Assemble

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Fully operational. Shipping worldwide, on schedule.Customs & duties included in the price

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Description

⚙️ Ignite your inner engineer—build the future, one spin at a time!

BUILD REBUILD - Designed for effortless assembly and disassembly—perfect for iterative learning.
MAGNETIC MASTERY - High-density magnets (≥72mT) vividly demonstrate magnetic lines of force.
POWER YOUR CURIOSITY - Operates smoothly between 1.5V and 6V for safe, hands-on learning.
COMPREHENSIVE SUPPORT - Includes detailed English manual and responsive customer service for seamless setup.
STEM READY CLASSROOM APPROVED - Ideal for physics projects, school labs, and science enthusiasts aged 14+.

The EUDAX STEM DIY Simple Electric Motor Kit is a compact, educational model designed to demonstrate the fundamental workings of a DC motor. Operating safely within 1.5V to 6V, it features high-strength magnets and copper components, making it ideal for physics education and hands-on STEM projects. Lightweight and easy to assemble, it comes with a detailed manual and customer support, empowering learners aged 14 and up to explore electromagnetism with confidence.

Specifications

ASIN	B07XWQ35MS
Age Range Description	Kid
Battery Description	Alkaline
Best Sellers Rank	#123,984 in Toys & Games ( See Top 100 in Toys & Games ) #1,213 in Educational Science Kits
Brand Name	EUDAX
Customer Reviews	4.3 4.3 out of 5 stars (400)
Educational Objective	Physics teaching model-the basic structure of the motor
Item Weight	0.27 kg
Manufacturer	EUDAX
Manufacturer Part Number	EX-DC-MOD
Manufacturer recommended age	14 years and up
Material Type	Copper
Set Name	EUDAX Simple Electric Motor Kit
Size	22x20x20 millimeters, 14x9x10.3 centimeters
Theme	Physics
Unit Count	1 Count

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