Jeff Matthews 2806 Posted February 4 I am wondering how long a motor like the one in the picture below could run on a coin-type 2032 battery. Here's the motor listing. Here's the battery. As far as load, it would be an object about the size and weight of a grape. Quote Share this post Link to post Share on other sites
joessportster 4220 Posted February 4 I'm not an Electrician, " But I did stay at a Holiday Inn Express " 🤣 Sometimes I crack myself up 1 Quote Share this post Link to post Share on other sites
dwilawyer 4191 Posted February 4 Need to know the mass of the grape sized object Quote Share this post Link to post Share on other sites
Jeff Matthews 2806 Posted February 4 12 minutes ago, dwilawyer said: Need to know the mass of the grape sized object About 5 grams. Quote Share this post Link to post Share on other sites
tube fanatic 1186 Posted February 4 You need to attach the load to the motor shaft, power it with the voltage you want to use, and measure the current draw with your multimeter. That will allow you to determine the mAh rating the batteries will need for the length of time the motor needs to run continuously. More details about what you are doing would be helpful. Maynard 3 Quote Share this post Link to post Share on other sites
ricktate 633 Posted February 4 Being a slot car guy that old type motor wont run long. What voltage is the motor?? I would think it will take 4 of those batteries to get it to run at all. 1 Quote Share this post Link to post Share on other sites
JJkizak 1378 Posted February 4 NFL---Not for long if it will even start the motor to turn. JJK Quote Share this post Link to post Share on other sites
Seadog 1259 Posted February 4 Based on the stated 3 hrs that the motor will run using 2 AA batteries (under no load), it should run about 9 minutes using a CR2032 (under no load). This assumes typical average mAh ratings of two AA Alkaline batteries vs. one CR2032 battery. 2 1 Quote Share this post Link to post Share on other sites
RandyH000 7229 Posted February 4 10 minutes ago, Seadog said: Based on the stated 3 hrs that the motor will run using 2 AA batteries (under no load), it should run about 9 minutes using a CR2032 (under no load). This assumes typical average mAh ratings of two AA Alkaline batteries vs. one CR2032 battery. great answer Quote Share this post Link to post Share on other sites
RandyH000 7229 Posted February 4 On 2/3/2021 at 9:58 PM, Jeff Matthews said: I am wondering how long a motor like the one in the picture below could run on a coin-type 2032 battery. Here's the motor listing. Here's the battery. As far as load, it would be an object about the size and weight of a grape. 1)-what is the application , functionality ? - N/A 2)-how long does the motor need to run initially for a safe operation ? ---can't be over 9 minutes , this is the run time for one 2032 battery -- 3)-what is the actual object that is going to be attached on the end of the motor ? - it cannot be an object that causes resistance as run time is reduced ( example -dual gear drive or belt driven gears ) 4)-what is the actual weight of the object ? --5 grams should not affect that motor from full run time of 9 minutes with one 2032 battery -based on @Seadog's results - Quote Share this post Link to post Share on other sites
Skelt 302 Posted February 4 1 hour ago, RandyH000 said: what is the actual weight of the object ? Jeff stated 5 grams 12 hours ago, Jeff Matthews said: About 5 grams. 1 hour ago, RandyH000 said: what is the actual object that is going to be attached on the end of the motor ? Does it matter? 1 hour ago, RandyH000 said: how long does the motor need to run initially for a safe operation ? Until the job is done. Until then no one is safe. 1 hour ago, RandyH000 said: what is the application , functionality ? If you have to ask........ Quote Share this post Link to post Share on other sites
RandyH000 7229 Posted February 4 5 grams weight is perfect/ @Seadog 's reply is dead on --9 minutes using a CR2032 (under no load). Quote Share this post Link to post Share on other sites
Bosco-d-gama 1130 Posted February 4 4 hours ago, tube fanatic said: You need to attach the load to the motor shaft, power it with the voltage you want to use, and measure the current draw with your multimeter. That will allow you to determine the mAh rating the batteries will need for the length of time the motor needs to run continuously. More details about what you are doing would be helpful. Maynard As has been mentioned. Average amp draw of the motor under load divided into the amp hour rating of the DC source gives you ‘run’ time. But as Maynard notes the peak amp draw could lug the system if it overdraws the battery. Your could put a solar power generator in-line to supplement the power needs. All this said - the motor is made in China - essentially junk. Recently one of our favorite glass grinders died after many years of excellent performance. We bought a new one from the same company....... only now they are made in China. The 1st two units had to be returned - totally not functional. The 3rd unit works better but the grinder bit is still not quite perpendicular to its platform. It went from hero to zero. 1 Quote Share this post Link to post Share on other sites
Gilbert 1149 Posted February 5 On 2/3/2021 at 8:58 PM, Jeff Matthews said: I am wondering how long a motor like the one in the picture below could run on a coin-type 2032 battery. Here's the motor listing. Here's the battery. As far as load, it would be an object about the size and weight of a grape. Looks cheap enough that you can conduct your own little experiment and determine everything you need to know. Or you could just listen to Maynard "aka Tubefanatic", and send Duracell's tech. department an email regarding the capacity of their 2032 battery. Quote Share this post Link to post Share on other sites
Marvel 5614 Posted February 5 There is no current rating for the motors, so you would certainly have do do some testing. Quote Share this post Link to post Share on other sites
RandyH000 7229 Posted February 5 40 minutes ago, Marvel said: There is no current rating for the motors - DC Motor -1.5-3V ---15000RPM - Quote Share this post Link to post Share on other sites
Marvel 5614 Posted February 5 That's meaninless by itself. For example, a computer chassis fan might be 2000 rpm at 12 volts, .25 amps. You can calulate how long it will run on a certain battery config. Or take a motor for an R/C car. They have few windings, high torque and require a lot of current. 1 Quote Share this post Link to post Share on other sites
Coytee 3384 Posted February 5 So I'm guessing that jumper cables from his car are likely out of the question? Quote Share this post Link to post Share on other sites
