Electronic – Current drawn vs Discharge rate of CR3032

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I have been working in a simple LED project which will draw 200mA from the supply. I need the project to be portable, so decided to go with CR3032 Battery product link. It is rated 500mah, i should be able to run my project for 2 hours at least and that's enough for me.

While checking the product page i have noted Discharge Rate – 200µA . I don't understand what exactly this convey.
1) So am wondering that if i could even draw draw 200mA from this battery and power my project?
2) What exactly does the Discharge rate info convey?

P.S : I am a newbie, still working my way in Electronics tinkering. Kindly advice 🙂

Best Answer

So am wondering that if i could even draw draw 200mA from this battery and power my project?

No. Coin cells are intended for low current applications such as keeping a real time clock powered. They are not intended to to deliver any significant power. Look at this graph in the datasheet.

CR3032 capacity vs discharge current

Capacity starts rolling off over ~1.5mA. You will have no usable capacity at 200mA, if the battery can even deliver 200mA.

What exactly does the Discharge rate info convey?

Continuous standard load is basically the maximum constant current load where you can expect to get the rated capacity.

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