RunRyder - Knowing the amount of charge in the Battery

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e-Electric Batteries & Chargers > Knowing the amount of charge in the Battery

jimmyack
Senior Heliman
Location: Singapore

Hi,
I keep reading in posts that ppl charge their battery and know how much charge is in the Battery (Mah). How do you determine that? Is there any tool to do so? My charger is a simple GWS peak charger and would like to understand how to know whether my 3000Mah Nimh batteries have proper full charge. Help appreciated.

Cheers.
Jimmy

01-10-2004 Over year old.

ufon
Heliman
Location: Prague, Czech Republic

You can use for example this simple charger monitor http://www.volny.cz/bel/e-merice.htm. It is connected between batteries and a charger.

01-14-2004 Over year old.

HOMEPAGE

superhero
Senior Heliman
Location: Montreal, Quebec

If you hook a voltmeter to your battery while charging you will see the voltage going up until it peak then the voltage start to go down and the charger stop charging. The 3000 mha is the reference of the amount of charge that the battery can take the more you have the more it last.
You can have a 1.2 volt battery that have 300 mha and other that have 600 mha the 600 will just last longer. what you have to check is the voltage going inside your battery cause to mutch will burn it.

01-14-2004 Over year old.

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ufon
Heliman
Location: Prague, Czech Republic

With a simple multimeter connected (regardless whether measuring V/A) you have no chance to know exactly and calculate how much current you have pushed to your batteries. What you can see is actual value. That is why some charge monitor exists and that is why computer chargers have quite sophisticated logic to measure current. Don't forget that we still do not consider the fact that some chargers use certain charge frequency which you can hardly monitor with standard multimeter.
Nevertheless what is more important for a flight is how much current you can get out your batteries afterwards :-))

01-14-2004 Over year old.

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e-Electric Batteries & Chargers > Knowing the amount of charge in the Battery

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