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-   -   battery question (https://www.rcuniverse.com/forum/questions-answers-154/758794-battery-question.html)

dinger2 05-09-2003 01:50 PM

battery question
 
Can I "cycle" my tx and rx batteries by simply leaving them turned on and then re-charging?
I keep trying to go out to the field, and another dang storm comes up-

Cheers, Brett

Charlie P. 05-09-2003 02:02 PM

battery question
 
Yes, as long as you don't let them drop too low before recharging. It is my understanding you don't want to let NiCads drop below 1.0v.

Steve Lewin 05-09-2003 02:25 PM

battery question
 
And provided you don't mind the possibility of damaging your transmitter. If you're going to do it make sure you have the antenna extended. There's really no need to discharge the batteries though.

Steve

mjd3 05-09-2003 03:33 PM

battery question
 

Originally posted by Steve Lewin
And provided you don't mind the possibility of damaging your transmitter. If you're going to do it make sure you have the antenna extended. There's really no need to discharge the batteries though.

Steve

Educate me. :confused:

dinger2 05-09-2003 05:09 PM

battery question
 
Thanks guys- I'm in the dark with the antenna bit as well- what's up with that?
Cheers, Brett

Rodney 05-09-2003 07:26 PM

battery question
 
If you run your xmtr with the antenna down, the SWR (standing wave ratio) goes way up and causes excessive heating in the output transistor which reduces its lifetime, possibly leading to instant failure. Did you ever notice how hot the back of your transmitter gets when you run with the antenna collapsed? Because the high SWR is causing the output transistor to heat up.

Steve Lewin 05-09-2003 07:30 PM

battery question
 
Rodney has it. Radios are meant to work into an exact load, the fully extended antenna. Mess with that load and they can overheat and die.

Steve

mjd3 05-10-2003 10:18 AM

battery question
 
good to know....thanks guys


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