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Topic: Test cell phone battery. (Read 422 times) previous topic - next topic

gal050

I have a cell phone battery (this one http://www.clove.co.uk/product-images/fullsize/note2battery-sam-n2bat-a31.jpg).
And I'm wondering how can I check the charge state (or mah in other words) of the battery and then send it over to the arduino.

mrburnette

This article will shed some light on the subject:

http://liionbms.com/php/wp_soc_estimate.php

The relevant introduction is enlightning:
Quote
There is no direct way of measuring the State Of Charge (SOC) of a Li-Ion battery. There are indirect ways of estimating it, but each suffers from limitations. This paper describes how combining two techniques can result in a reasonable estimate of SOC.


This is why LiON packs for notebooks have their own uC inside the battery pack.



Ray

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