Do you know battery capacitor

45 pts.
Tags:
capitor
Hi All

I am hoping someone can help me with this one.

I have a battery (29.2v DC) and its made up of Lithium cells. Inside the battery there is a capacitor across the positive and negative wires which then lead directly out of the battery. The capacitor is a 35V 220uf.

Please can some one tell me what is the purpose of the capacitor in the battery?
Also, would the presence of the capacitor positively effect the outcome of an EMC test on the device the battery powers. ( A brush less motor and controller)

Thanks
1

Answer Wiki

Thanks. We'll let you know when a new response is added.

If you want a good explanation of how they work check out this tech site.

Machinedesign.com it explains it pretty well. 

Discuss This Question: 4  Replies

 
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  • Subhendu Sen
    Are you a learner? Hope you are in a learning process. Why you people don't like to read your study materials ? Why not invest some time for reading/ writing your assignment? There is no shortcut way to learn something good. Please follow your study materials and gather solid knowledge rather wasting time to search on the met.
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  • ToddN2000
    Are you trying to use this battery for something other than it's intended use? How do you know there is a capacitor inside the battery? Did you take it apart ? Where did you get the info on the capacitor?  This sounds like a class assignment. If not provide more details on what you are planing to do with this battery.

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  • TheRealRaven
    Because of dangers with the content of lithium batteries, they should never be opened by anyone who isn't fully experienced with their internals.
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  • Subhendu Sen
    Here is a good tutorial, please link it, https://learn.sparkfun.com/tutorials/capacitors/all
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