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bettery charging time euqation?! I'm confused....

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Old May 29th, 2009, 11:57   #1
Gunny_McSmith
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bettery charging time euqation?! I'm confused....

hi, for now, I'm using a wall charger(output 500mah) for my crane stock battery, (G&P 2200mah)

but when searching on the internet, I found 2 equations for the charging time...

some say that it's ''mah of battery/mah of charger''
and others say that it ''mah of battery*1.5/mah of charger''

so now I'm confused, and dunno wich equation to use for the charging time....

PS: Yes I'll buy a smart charger really soon!
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Old May 29th, 2009, 12:00   #2
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If it is NiMH, you should use the second equation, with *1.5. They don't hold quite all of the charge that they take in, so you need to charge it a little longer than the theoretical battery mah/charger mah
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Old May 29th, 2009, 12:01   #3
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I am charging my battery 8.4 2400mh at 2400mh *2.4 amps*

But I can tell that you have a better battery *bettery* but your forgiven as your french lol
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Old May 29th, 2009, 12:04   #4
Gunny_McSmith
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thx ...and yes I'm french...lol
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Old May 29th, 2009, 13:11   #5
Qlong
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There should not be a variable of time ('h' as in hour) on the charger, it should just be expressed in Amps (A) or Milliamps (mA).



Using this equation, you see the Milli-amps cancel out, leaving you with the Hours need to charge.
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Old May 29th, 2009, 13:41   #6
Gunny_McSmith
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Quote:
Originally Posted by Qlong View Post
There should not be a variable of time ('h' as in hour) on the charger, it should just be expressed in Amps (A) or Milliamps (mA).



Using this equation, you see the Milli-amps cancel out, leaving you with the Hours need to charge.
but isn't that the ''theorical '' equation... (like if it would be in the perfect conditions it would be like that...) but since it's a NiMH, we have to use a factor 1.5...
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Old May 29th, 2009, 13:52   #7
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Oh, in that case, its 150% of the battery capacity. So 1.5 multiplied by the time.
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Last edited by Qlong; May 29th, 2009 at 13:55..
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Old May 29th, 2009, 14:52   #8
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or more commonly expressed as 1.5c
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