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-   -   where to get dx7 transmitter lipo? (http://www.rccrawler.com/forum/electronics/466610-where-get-dx7-transmitter-lipo.html)

LoneRanger 10-23-2013 08:18 AM

where to get dx7 transmitter lipo?
 
looked on hobbyking, I find their website not the easiest to navigate. I need a decent transmitter battery for my DX7-
I also need to pick up the male plug for the specktrum so I can make a charging lead for the battery when I find one. anyone know what they are called?
links to products would be great!

L.R. "thumbsup"

LoneRanger 10-29-2013 08:06 AM

Re: where to get dx7 transmitter lipo?
 
Bump

LoneRanger 11-01-2013 03:32 AM

Re: where to get dx7 transmitter lipo?
 
Bump!

Johnnysplits 11-01-2013 03:50 AM

Re: where to get dx7 transmitter lipo?
 
Hobby king is very easy to navigate and they list all the specs when you're looking at a particular battery. Take measurements inside the case so you can find a battery that will fit. Or, you can ask in an aircraft forum being that the DX7 is an aircraft radio.

Johnnysplits 11-01-2013 04:10 AM

Re: where to get dx7 transmitter lipo?
 
A 3 second search...2500mA TX Battery Fits Jr Spektrum DX7 | eBay

LoneRanger 11-06-2013 06:09 AM

Re: where to get dx7 transmitter lipo?
 
looking for a lipo, not a nimh-

thanks for the help though.

L.R.

shakemandril 11-06-2013 07:22 AM

Re: where to get dx7 transmitter lipo?
 
Is this the lead you are looking for? Also, this is the battery I use in my DX8, should work fine in the DX7 too.

Johnnysplits 11-06-2013 06:43 PM

Re: where to get dx7 transmitter lipo?
 
New Spektrum DX8 DX7S Transmitter LiPo Battery 4000mAh Turnigy US SPMB4000LPTX | eBay

LoneRanger 12-05-2013 07:19 AM

Re: where to get dx7 transmitter lipo?
 
a stock battery is 9.6v, I have heard of using a 3s lipo with out issue but that seems like a pretty good upswing to me-

Am I being overly cautious?


L.R.

LoneRanger 12-07-2013 08:37 AM

Re: where to get dx7 transmitter lipo?
 
Bump, no one uses a 3s lipo on their radios?

wings_of_fire 12-07-2013 09:20 AM

Re: where to get dx7 transmitter lipo?
 
Does the DX8 manual say that you can use a 3s lipo?

wings_of_fire 12-07-2013 09:38 AM

Re: where to get dx7 transmitter lipo?
 
I just checked the DX8 manual and it is recomended to use 2s lipo max.

In case you want to use a 3s lipo which is 11.1 volt then you will have to bring down its voltage to 7.4 volt. If you use the 11.1 volt battery consider your DX8 fried. To bring the 11.1 volt down to 7.4 volt you will have to use an appropriate voltage regulator IC with the 3s lipo pack.

-----------------------------------------------------------
The LM7808 or LM7806 ic will work in your case. The LM7808 will give some 0.6volt more than what your radio will need and the LM7806 will give 1.4 volt less than 7.4 volt. Incase you plan to go ahead with the use of an IC, first check the output voltage with a multimeter and make sure it is inside the recomended voltage level and only then plug it into your radio.

http://i877.photobucket.com/albums/a...c.jpg~original


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LoneRanger 12-10-2013 04:20 PM

Re: where to get dx7 transmitter lipo?
 
Quote:

Originally Posted by wings_of_fire (Post 4578478)
Does the DX8 manual say that you can use a 3s lipo?

I have a DX7, not an 8. I am gonna say that 3s will fry it. :shock:


L.R.

wings_of_fire 12-10-2013 11:26 PM

Re: where to get dx7 transmitter lipo?
 
my mistake..
Don't know how I missed DX7:roll:

phillyb 12-11-2013 09:32 AM

Re: where to get dx7 transmitter lipo?
 
Yes a 3s lipo will fry it. I got the 2500mah nimh, never looked back. I remember reading that the life packs would be ok, they are 3.3v per cell, so 3s would be 9.9, and should be within the limits.


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