How many amps to charge
04-22-2006, 11:15 AM
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RE: How many amps to charge
The info that came with the charger said never charge a NiMh pack above 3.0 but nicads can charge at 5.0 -6.0 amps. I wonder why some say this and others say it's OK at higher amps?
04-22-2006, 10:46 PM
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RE: How many amps to charge
With this charger DuraTrax IntelliPeak AC/DC Digital Pulse Charger how long would it take to charge a gp 3300 mah battery pack at 5 amps and 6? And how long for a 1900mah pack at 5 amps?
04-23-2006, 12:30 AM
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RE: How many amps to charge
ORIGINAL: U-dUd
The guideline I use is how much of a hurry I am in,
The guideline I use is how much of a hurry I am in,
robert, time required in mins = ( battery mAh ) / ( charge rate in mA ) * 60 mins.
04-23-2006, 01:52 AM
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RE: How many amps to charge
i dont get what you said. Do i multiply the mah on the batt with the ma on the charger??? I think the charger is 100mA cus it says TRICKLE Charge Rate: 100mA but thats all i found.
04-23-2006, 01:56 AM
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RE: How many amps to charge
No, you divide the battery pack capacity by the charge rate then multiply that number by 60.
In other words, 3300 / 100 X 60 ='s 1980 minutes, therefore it would take 33 hours to fully charge a 3300mah pack at a 100mah charge rate.
In other words, 3300 / 100 X 60 ='s 1980 minutes, therefore it would take 33 hours to fully charge a 3300mah pack at a 100mah charge rate.
04-23-2006, 10:43 AM
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RE: How many amps to charge
ORIGINAL: U-dUd
It is kinda like speed, At 55 mph (rate) how long will it take to go 55 miles? 1 hr, right.
5 amp rate delivers 83 ma/hr
6 amp rate delivers 100/hr
It is kinda like speed, At 55 mph (rate) how long will it take to go 55 miles? 1 hr, right.
5 amp rate delivers 83 ma/hr
6 amp rate delivers 100/hr
04-23-2006, 10:44 AM
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RE: How many amps to charge
ORIGINAL: U-dUd
It is kinda like speed, At 55 mph (rate) how long will it take to go 55 miles? 1 hr, right.
5 amp rate delivers 83 ma/hr
6 amp rate delivers 100/hr
It is kinda like speed, At 55 mph (rate) how long will it take to go 55 miles? 1 hr, right.
5 amp rate delivers 83 ma/hr
6 amp rate delivers 100/hr
04-23-2006, 10:52 AM
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RE: How many amps to charge
i think that these calculations are wrong
5 amp rate delivers 83 ma/hr
6 amp rate delivers 100/hr .
It should be like the ones below. it takes a thousand milliamps to make one amp .if i am wrong some one let me know
1: 5 amp =5000 milliamps in an hour
2: 6 amp =6000 milliamps in an hour
5 amp rate delivers 83 ma/hr
6 amp rate delivers 100/hr .
It should be like the ones below. it takes a thousand milliamps to make one amp .if i am wrong some one let me know
1: 5 amp =5000 milliamps in an hour
2: 6 amp =6000 milliamps in an hour
04-23-2006, 12:37 PM
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RE: How many amps to charge
ORIGINAL: U-dUd
It is kinda like speed, At 55 mph (rate) how long will it take to go 55 miles? 1 hr, right.
5 amp rate delivers 83 ma/hr
6 amp rate delivers 100/hr
It is kinda like speed, At 55 mph (rate) how long will it take to go 55 miles? 1 hr, right.
5 amp rate delivers 83 ma/hr
6 amp rate delivers 100/hr
Sorry, these ar PER MINUTE, not per hr. The per hr figures are easy. 5 amps = 5 amps per hr.
04-23-2006, 10:26 PM
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RE: How many amps to charge
ok 5 amps= 5000 miliamphours
Then your cells are 3300mah so just divide 3300 by 5000 and you'll get 40 minutes about you can do the math for 6 amps... lol
Then your cells are 3300mah so just divide 3300 by 5000 and you'll get 40 minutes about you can do the math for 6 amps... lol
04-23-2006, 11:06 PM
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RE: How many amps to charge
Amount of time needed to charge your battery!!!
Some stuff for the not so mathmatical people:
A "/" is a "divide" sign.
A "*" is a "multiplication" sign.
1A = 1000mAh
The Equation:
A = Batteries Capacity in mAh
B = Chargers Output Currant
C = 60 Minutes (1 hour, pretty simple, eh?)
A / B * C = Amount of time to charge your battery
I have a 3.3A (3300mAh) battery, and a charger that charges at 5A (5000mAh).
This is how I would work it out:
3300 / 5000 * 60
What I would key into a calculator:
3300 "divide sign" 5000 "multiplication sign" 60
And 100% of the time, the answer it will give me is 39.6 minutes.
(OMG, YES, That took me ages to make!)
Time needed to charge common mAh batteries:
GP3300
0.1A = 1980 minutes
0.5A = 396 minutes
1A = 198 minutes
2A = 99 minutes
3A = 66 minutes
4A = 49.5 minutes
5A = 39.6 minutes
6A = 33 minutes
7A = 28.3 minutes
GP3700
0.1A = 2200 minutes
0.5A = 444 minutes
1A = 222 minutes
2A = 111 minutes
3A = 74 minutes
4A = 55.5 minutes
5A = 44.4 minutes
6A = 37 minutes
7A = 31.7 minutes
IB3800
0.1A = 2280 minutes
0.5A = 456 minutes
1A = 228 minutes
2A = 114 minutes
3A = 76 minutes
4A = 57 minutes
5A = 45.6 minutes
6A = 38 minutes
7A = 32.6 minutes
IB4200
0.1A = 2520 minutes
0.5A = 504 minutes
1A = 252 minutes
2A = 126 minutes
3A = 84 minutes
4A = 63 minutes
5A = 50.4 minutes
6A = 42 minutes
7A = 36 minutes
HOPE I HELPED!
