reciever battery question? - RCCanada - Canada Radio Controlled Hobby Forum
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Old 11-03-2003, 07:02 AM   #1
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reciever battery question?

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Hi guys, Last night I was working on my planes, and I forgot to turn off my switch in my plane, the reciever battery is totally drained, have I damaged this at all? or can I simply recharge it and dont worry about it? thanks for your help in advance,,,,, Joey......
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Old 11-03-2003, 07:38 AM   #2
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If you have a cycler I would charge it then discharge it again but it should be okay. It is just not advisable to discharge them that low every time.

If you don't have a cycler... find someone who does so they can check the pack for you.
Jim Daly
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Old 11-03-2003, 07:49 AM   #3
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Joey, First of all I am assuming that you are using Ni-Cad Packs.

If you just left the switch on overnight eg 8 or 9 hours I would say that your pack should be ok. All of us have done it at one time or another!

Do you have an ESV? Everyone who flys should have one! If not, its an excellent investment, especially for times like this! If you do, test the pack and see what the reading is, check it NOT under load if your ESV has a selectable switch. If it is an old pack and it show absolutely NO voltage, you may have one or more shorted cells, but if the pack is fairly new you probably won't. As a matter of fact, it is recommended that a battery pack be left in a discharged state while storing for the winter BUT even then the cells should still read about 1.0volts per cell or 4.0 volts for the pack. Find a friend who has an ESV if you don't have one.

I would suggest you use your overnight charger and leave it on for at least 16 hours and check it again with your ESV under load. It should now read somewhere around 5.2 - 5.4 volts. Definitely over 4.8volts.

Better yet, if you have a cycler or can get a friend who has one, do a cycle test on your pack after you have charged it for the 16 hours. A cycle test will discharge your pack to approx 1.1 volts per cell (4.4v for the pack) and fully recharge it which will refresh the pack as well. This will give you the best indication of the condition of your battery pack.

For a wealth of battery information check out this site

Hope this helps! Others too will probably offer suggestions on this matter.
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Radios used: Spektrum DX6i
Current builds: 1/4 scale J3 Cub & Neiuport 17 and KMP B-25.
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