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Old 12-09-2008, 03:18 PM   #1
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Default Orion advantage carbon lipo charger queston

Ok like the title says that is the charger I am running. I think I have it set up correctly. I have it set for lipo 7.40 4900 mah. I have been charging my trakpower 4900 at 7 amps. It will go up to 7.4 volts when charging and then the amp rate drops till it gets to 0 and thin it gives the peak tone. then it reads that only 7.38 volts are in the pack. I am not really worried about it having a little less than 7.4 I just want to make sure that I do not have a bigger problem somewhere that I am missing. What are your thoughts on this matter. o-yea I do not have a balancer hooked up on it at the moment, but the last charge i put on it was with a balancer
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Old 12-09-2008, 03:25 PM   #2
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Why are you charging at 7amps? Correct setting for 1C should be 4.9amps for the trakpower. As far as I know the cell was not rated for higher than 1C charge and even then it would reduce the cell life. A fully charge lipo will have more than 7.4v at no load.
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Old 12-09-2008, 03:30 PM   #3
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In my post i meant 8.4 when I said 7.4. I read the post above and checked the back of my batt. it says that you can charge up to 10 amps
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Old 12-09-2008, 03:51 PM   #4
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Maybe they uprate the 2C charge on the new ones? My original trakpowers never claimed 2C charge on the shell and it is the cells inside.

In any case don't worry about it if it's @ 8.38v. It's fine. The charger does not allow the cells to reach more than 4.2V per cell before shutting off. If you want to charge at 1.5-2C I recommend using the balancer when you do it. Using 1C charge I would use the balancer maybe once every 5 charges.
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Old 12-09-2008, 04:07 PM   #5
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Thanks. Yea I typically do use a balancer but I went to this one from a charger with one built in and am waiting on the one ordered to come in. I also typically do charge at 1c just trying it out with a little more juice
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Old 12-09-2008, 08:03 PM   #6
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From what was discussed, if I am not wrong you are refering to Trakpower 4900mAH 2 cell 7.4V 25C battery.

http://www.trakpower.com

What it claims to be able to do 2C fast charging (with V-Balance recommended)

I was thinking if anyone tried charging at 2C aka 9.8A with a balancer?
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