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Most consistent battery/flatest discharge curve?

Most consistent battery/flatest discharge curve?

Most consistent battery/flatest discharge curve?

(OP)
I need a low voltage (<10v) battery to run a small motor. The thing is, i need this battery to power the motor as consistently as possible, and I'm wondering what type of battery I should get. From what I understand, I want a battery with a very flat discharge curve, which is either going to be a NiCd, LiPo, or LiFe, but I dont want the memory on a NiCd. So which has a flatter discharge curve, a LiFe or a LiPo? Also, because the motor is fairly low current, and from what I've seen the discharge curve becomes flatter as the C of the discharge becomes greater, so does this mean that I want a lower capacity battery? Any ideas? Thanks.

RE: Most consistent battery/flatest discharge curve?

Consider using a regulator to control the motor voltage.
 

Mike Halloran
Pembroke Pines, FL, USA

RE: Most consistent battery/flatest discharge curve?

(OP)
Thanks Mike

 I probably should have mentioned that due to the rules of the competition, I cannot use any complex circuitry components. I am limited to motors, batteries, resistors, and capacitors. So I think I'm only left with trying to find the nicest battery i can.

RE: Most consistent battery/flatest discharge curve?

Then, that would be NiCd, and the way to avoid memory problems is to always fully discharge them, and then immediately fully charge them.

 

Mike Halloran
Pembroke Pines, FL, USA

RE: Most consistent battery/flatest discharge curve?

Late or not, I've just joined.

Try the LFP (lithiu-ferro-phosphate) technology. It has 3.6-2.5V range but for most of the SoC (80%) it is 3.3 or 3.2 flat and that is the range where the power is available.  

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