
06-28-2003, 02:26 PM
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TinyRC Pro
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Join Date: Jun 2003
Posts: 22
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Can I utilize this charger?
I bought this a few years back for 6 cell RC battery packs. It is an Astroflight model 114. It is not digital like the newer models. Someone tell me if I can use it to charge bits somehow.
Can one of you electronics pros lend me a hand...you know who you are.
Last edited by complaisant; 06-28-2003 at 02:28 PM.
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06-28-2003, 11:28 PM
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Camera springs
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Join Date: Jun 2003
Location: Okinawa
Posts: 222
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At first I might say "no", but in reality "maybe". For recharging your bits the "fast" way (within a 10~15 minutes) you'll need something that outputs 25~50% more voltage then the batteries being recharged. for example: a duall cell made by taking two 1.2 volt nicads and putting them in series will output 2.4 volts to the motor. So, you'll need about 3~3.6 volts(2.4 x .25~.5) from the charger to recharge the batteries in the car. Or a stock bit outputs 1.2 volts, so you'll need a charger that outputs between 1.5~1.8 volts (same formula as above). Also think about current, or "mah". "example" If electricity is a sink focet, then "voltage" would be equall to the water supply the focet is getting it's water from, and "current" would be equall to the speed at witch the water is coming out. If the recharger is putting out too much current, then it will fry the batteries. Kinda like trying to fill a glass with water from a fire hose. There is a math formula for finding out the correct current to use, but I can't remember it right now. What I would do, "if the voltage output by the charger isn't too high or too low", is go ahead and try, but watch too see if the batteries start to get hot real fast. If they start to get hot quickly (within 1~4 minutes of charge time), then stop using it. If you keep using it, then you'll either make the batteries in the car explode, fry something on the pcb in the car or depreciate the batterie's value until they don't work anymore. Most charger units don't list the current, but you should be able to find the voltage output on the charger or in the manual. Or, you can use a multimeter to test for the output values.
The slow method of recharging would be about the same except the charger charges at 10% of the total mah of the batteries being recharged. This way takes about 15 or more hours, but is completely safe for most, "not all", batteries.
So, find out what the voltage and current output on the charger is. If you still don't understand, then post a reply of the voltage and current of the batteries you want to recharge and the voltage and current of the recharger's output and I'll do the math.
Sorry if I just confused you. If you don't understand any of this, then I would do a search on the internet for "how to recharge batteries" and try to learn as much about it from websites "that aren't advertising anything".
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06-29-2003, 01:10 AM
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I need to change my Title
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Join Date: May 2003
Location: US
Posts: 251
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D@mn, that is old. If you have an old disposable camera or flach use thecapacitor thingy to charge it in under 5 seconds. if you don't know where the capacitor it, charge the camer/flash and start touching things untilyou feel a large shock. I warn u it hurts, but aI charge my tri-cell in 10 seconds, it's realy amazing.
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