rechargeable batteries cycles
How long could I expect to run a 12V DC motor (0.3 amps) off a battery pack?
I would like to run this motor intermittently using a portable drill-type rechargeable battery pack, maybe lithium-ion. How long could I expect it to function with say a 30 percent on/70 percent off duty cycle before it drains the battery?
It has been my observation that cells used for building battery packs for things like cordless drills all seem to have about 2000-3000 mAH capacities. Of course the size and number of cells in a 12 volt (nominal) pack will vary with the chemistry. Your motor draws a fraction of the current that a drill motor under load would use. At a 30% duty cycle, your motor would average .09 amps or 90 mA. You could reasonably expect about 20 hours of use from a fully charged battery in good condition without fully depleting it.
Don
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Long cycle life rechargeable lithium batteries final report (SuDoc NAS 1.26:190937) … |
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