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All Forums >> Radios, Batteries, Clubhouse and more >> Batteries & Chargers >> Charging Rates
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Charging Rates - 7/30/2003 1:56:31 AM   
BaronSchwab



Posts: 1323
Joined: 7/29/2003
From: Saint Paul, MN, USA
Status: offline 		Doen any of you know a formula to determine what amperage to use when field charging a battery.

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Non esse sine aircraftus.
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Charging Rates - 7/30/2003 4:29:11 AM   
3DFanatic


 

Posts: 2669
Joined: 7/22/2003
From: Tacoma, WA, USA
Status: offline 		ALl depends on what type of battery.

For quick-charging a NiCd:
Never charge and more the 3C (3 times its rated capacity)

For NiMH:
Never more then 2C

For all Lithium based:
Never more then 1C

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-Aaron
3Dfoamy.com

(in reply to BaronSchwab)
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Charging Rates - 7/30/2003 9:11:11 AM   
tunnelvishon


 

Posts: 214
Joined: 2/23/2003
From: St. Catharines, ON, CANADA
Status: offline 		I've charged some nicads at 4C(usually 2-3C) but have watched them closely and its worked fine for me. I presume their life may be a little shorter but it hasn't been an issue yet for me.

(in reply to BaronSchwab)
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Charging Rates - 7/30/2003 3:02:33 PM   
BaronSchwab



Posts: 1323
Joined: 7/29/2003
From: Saint Paul, MN, USA
Status: offline 		I have a battery with cells that are 2.5in long. Are these "A" sized?

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Non esse sine aircraftus.

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Charging Rates - 7/30/2003 7:46:24 PM   
cobalt



Posts: 23
Joined: 4/11/2003
From: SoCal, USA
Status: offline 		Here's a cool chart with cell size referrences and a listing of lot's of different cells with actual weights. (NiCD AND NiMH despite the url.)

http://www.tnrtechnical.com/NICAD_Choices.htm

Hope that helps,
Jason

(in reply to BaronSchwab)
       Post #: 5

Charging Rates - 7/30/2003 7:57:48 PM   
BaronSchwab



Posts: 1323
Joined: 7/29/2003
From: Saint Paul, MN, USA
Status: offline 		I assume that the measurements are in mm.

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Non esse sine aircraftus.

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Charging Rates - 7/30/2003 8:12:00 PM   
cobalt



Posts: 23
Joined: 4/11/2003
From: SoCal, USA
Status: offline 		yes, http://www.onlineconversion.com/length_common.htm

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       Post #: 7

Charging Rates - 7/30/2003 9:21:13 PM   
BaronSchwab



Posts: 1323
Joined: 7/29/2003
From: Saint Paul, MN, USA
Status: offline 		Thanks all for the help!

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Non esse sine aircraftus.

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       Post #: 8

Charging Rates - 7/31/2003 6:18:49 AM   
Geistware



Posts: 12946
Joined: 4/9/2002
From: Locust Grove, GA, USA
Status: offline 		While you can charge at higher rates, both Sanyo and Panasonic state that 1C is the max charge rate.

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