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Post by Twister65 on Sept 1, 2007 13:50:09 GMT 1
One of my stock 7-cell batteries appears to be going flakey. When I use it, the motor will cut out if I push to full throttle too fast. If I start at 1/2 and gradually increase to full, it will usually work.
My first thought was the jumper on the receiver, but it's in place and my other 7-cells work fine.
I should also add that the plastic wrap on the battery did get torn near the connector wires a while ago, resulting in stress on one of the wires which eventually broke. I soldered the wire back on and taped up the pack with some packing tape and it worked fine for weeks after.
Any ideas?
Scott
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Post by mrmugen on Sept 1, 2007 21:45:46 GMT 1
You may want to take the entire wrap off and see if the battery bars are still soldered on well. It sounds like a bad connection to me. They use some pretty crappy tabs for the soldering of cells. Check that, Kevin
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hack73
Squadron leader
Posts: 154
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Post by hack73 on Sept 1, 2007 21:57:39 GMT 1
How long of a flight do you get out of that battery?
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Post by kalnaren on Sept 2, 2007 1:59:37 GMT 1
Are you using the stock charger? The wall charger that came with my SC foobared and screwed up the battery, I think I managed to fix it but I was having the problem you describe.
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hack73
Squadron leader
Posts: 154
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Post by hack73 on Sept 2, 2007 13:20:34 GMT 1
Are you using the stock charger? The wall charger that came with my SC foobared and screwed up the battery, I think I managed to fix it but I was having the problem you describe. How did you fix it? Just curious. |
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Post by kalnaren on Sept 2, 2007 15:49:06 GMT 1
Are you using the stock charger? The wall charger that came with my SC foobared and screwed up the battery, I think I managed to fix it but I was having the problem you describe. How did you fix it? Just curious. Drained the battery in the airplane, then hooked it up to a 12v auto car light do discharge it further for about 4-6 hours. Then charged it again using my other charger (@ 1amp), ran it in the plane down again, then charged it again. |
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Post by Twister65 on Sept 3, 2007 20:03:11 GMT 1
I've never timed the length of flight I get with the battery, but it's anywhere between 10-15 mins. I just can't get it to full throttle immediately. Sometimes I won't be able to get it full throttle, even if I try to gradually increase it during flight.
I use the 12v charger for all of my batteries, except the 8-cell, which I charge on the AC.
Perhaps I'll first unwrap the entire thing to make sure all connections are good, as mrmugen suggested.
Thanks!
Scott
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Post by rcairplanepilot on Dec 21, 2007 4:36:20 GMT 1
check each cell to make sure none reversed also
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