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« on: April 07, 2015, 09:32:37 PM »
K K Iyer
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I have 2 lipos of 2650 mah for 2 Txs.
A few days back Adiboy called wanting to borrow a 1450 lipo for Tx.
Since i didn't have one, i suggested using a regular 3s like Zippy compact 1000mah.
He did, and found that it's a good solution.

The moral is:
YOU DONT NEED A SPECIAL BATTERY FOR Tx.
Just because you Tx draws less current doesn't mean you can't use a regular 20-30C lipo.

So please use your old 3s lipos for your Txs.
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« Reply #1 on: April 07, 2015, 09:46:43 PM »
sooraj.palakkad
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SPN
Quote from: K K Iyer on April 07, 2015, 09:32:37 PM
So please use your old 3s lipos for your Txs.

Only if it fits !!! - Don't cram  your old 3S battery in to your Tx battery compartment to make it fit Giggle
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« Reply #2 on: April 07, 2015, 10:29:17 PM »
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@sooraj.palakkad,
There's always double sided sticky tape that one can use on the back of the Tx...
The point was that you don't need a special battery for the Tx.
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« Reply #3 on: April 10, 2015, 01:17:34 AM »
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Yes Sir, that point is clearly stated in 9xr pro manual Page:2
Screenshot attached below.

http://www.rcindia.org/radios-and-receivers/lipo-for-tx/?action=dlattach;attach=707635;image
Lipo for Tx
Batt.jpg
Re: Lipo for Tx
* Batt.jpg (47.21 KB, 800x216 - viewed 551 times.)
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« Reply #4 on: April 10, 2015, 02:13:25 PM »
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Actually I have been using 2S on Fly Sky Th9x tx, because tx works on 5v max internally. Powering it with 12v is just a lot of work for the internal voltage regulator.

Im not sure but it seems most 9ch tx'es from flysky,turnigy,frsky modules etc can run on 2S.
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« Reply #5 on: April 10, 2015, 02:25:43 PM »
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All TX works on 5V internally but regulators need 6V min to serve 5v output.

Most of them uses LM7805/LM78M05 can handle upto 22V Continuesly(in normal weather conditions with heat-sink), upto 16V For safe in hot weather conditions(with heat-sink)  and  13v without any heat-sink and up to 55 degree Celsius  (most of the radio comes like this).
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« Reply #6 on: April 10, 2015, 02:36:34 PM »
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Sometimes, (usually most of the summer) I have to fly in 45-48 Degree Celsius and within 5mins I can feel the back shell heating up on my Tx even while using 2S(motors cant be held for more than 3-4 seconds after 2-3 flights). And usually 2s can be discharged till 6.6v which still leaves enough room for voltage loss in regulators.

Yet in any case why is so much abundance required.
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« Reply #7 on: May 08, 2015, 11:18:01 PM »
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so does the moral comes to be that we can use any lipo in tx i mean can i use 3s 11.1v 30c for my tx Huh??
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« Reply #8 on: May 08, 2015, 11:54:01 PM »
Himadri Roy
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Yes you can
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« Reply #9 on: May 08, 2015, 11:55:47 PM »
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Re:
Thanxx a lot kk sir I was thinking to buy a Lipo for my tx :p
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