RC Radios, Transmitters, Receivers, Servos, gyros Discussion all about rc radios, transmitters, receivers, servos, etc.

Longer Lasting TX Battery???

Reply

Old 09-28-2004, 09:44 PM
  #1  
webanaut
Junior Member
Thread Starter
 
Join Date: Sep 2004
Location: Tucson, AZ
Posts: 15
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default Longer Lasting TX Battery???

I just bought a Futaba 7CAP. I notice the TX battery and the RX battery are both 9.6V 600mAh and 4.8V 600mAh respectively. Any recommendations on battery upgrade so they may last longer. I was able to find plenty of 1000, 1500, 2000 mAh batteries for the RX but I cannot find any for the TX. Are there any that will fit my TX or am I going to just have to live with it and buy another 9.6V 600mAh .The battery in the TX is 1.125" x 1.125 x 4".

If you use the Futaba 7CAP, can you let me know approximately how long does the battery last. I know there are many factors that can increase or diminish the longevity. All I want is an approximation. Also please recommend anything you think might help me out in this quest.

Thanks ahead for your input!
webanaut is offline  
Reply With Quote
Old 09-28-2004, 10:18 PM
  #2  
wover98
Member
 
wover98's Avatar
 
Join Date: Apr 2004
Location: Florence, MS
Posts: 80
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: Longer Lasting TX Battery???

Try this link.

www.radicalrcom

You can get most any thing you need,(excepting Allice).

Dave can build you what you want. I have had nothing but great service from them.
I also converted to Nickel-Metal-Hydride (NiMH), More battery with less weight.
Lots of helpful info also.

Hope this helps.
Will
wover98 is offline  
Reply With Quote
Old 09-29-2004, 10:46 AM
  #3  
mbba2002
Banned
My Feedback: (10)
 
Join Date: Jan 2003
Location: manitowoc, WI
Posts: 892
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: Longer Lasting TX Battery???

you can make your own packs TX for $18 and RX packs $9 if you go to walmart and buy the 2300 NIMH AA batteries in a 8 pack and 4 pack .
mbba2002 is offline  
Reply With Quote
Old 09-29-2004, 10:50 AM
  #4  
dirtybird
My Feedback: (5)
 
Join Date: Jan 2002
Location: San Tan Valley, AZ
Posts: 5,768
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: Longer Lasting TX Battery???

ORIGINAL: mbbaj2001

you can make your own packs TX for $18 and RX packs $9 if you go to walmart and buy the 2300 NIMH AA batteries in a 8 pack and 4 pack .
Its not a good idea to solder to these batteries without terminals.
dirtybird is offline  
Reply With Quote
Old 09-29-2004, 12:07 PM
  #5  
TLH101
My Feedback: (90)
 
TLH101's Avatar
 
Join Date: Dec 2001
Location: Elephant Butte, N.M.
Posts: 6,707
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: Longer Lasting TX Battery???

I have a 1300mah NiMH from Radical R/C in my Airtronics Stylus. I can if needed, get in 2 days of flying without recharging. It will initially charge to about 11.4 volts, but drops to 10.7- 10.4 volts and holds at that rate for what seems like forever. I really believe it was some of the best money I have spent on my hobby. Just remember to check out Dave guidelines for charging new NiMH batteries.
TLH101 is offline  
Reply With Quote
Old 09-29-2004, 12:44 PM
  #6  
seanucd2000
Senior Member
My Feedback: (1)
 
Join Date: Sep 2003
Location: Fairfield, CA
Posts: 103
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: Longer Lasting TX Battery???

I have Wal-mart or Target supplied NiMh home made packs in all of my radios and planes, cars, etc., and have been doing it for a long time, and never had a problem yet. If you know how to solder, go for it and buy some fuel with the left over money! I trust my solder joints much more than those cheap spot welds anyway.....
seanucd2000 is offline  
Reply With Quote
Old 09-29-2004, 06:24 PM
  #7  
mbba2002
Banned
My Feedback: (10)
 
Join Date: Jan 2003
Location: manitowoc, WI
Posts: 892
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: Longer Lasting TX Battery???

Im saving lot of money and I trust my soldering job. I will never buy a assembled tx pack again.
mbba2002 is offline  
Reply With Quote
Old 10-02-2004, 11:41 PM
  #8  
aeajr
My Feedback: (2)
 
aeajr's Avatar
 
Join Date: Jan 2003
Location: Long Island, NY
Posts: 8,567
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: Longer Lasting TX Battery???

ORIGINAL: webanaut

I just bought a Futaba 7CAP. I notice the TX battery and the RX battery are both 9.6V 600mAh and 4.8V 600mAh respectively. Any recommendations on battery upgrade so they may last longer. I was able to find plenty of 1000, 1500, 2000 mAh batteries for the RX but I cannot find any for the TX. Are there any that will fit my TX or am I going to just have to live with it and buy another 9.6V 600mAh .The battery in the TX is 1.125" x 1.125 x 4".

If you use the Futaba 7CAP, can you let me know approximately how long does the battery last. I know there are many factors that can increase or diminish the longevity. All I want is an approximation. Also please recommend anything you think might help me out in this quest.

Thanks ahead for your input!
I have a 9C, but life and battery I think are similar. My standard 700 mah nicd pack lasts for about 2.0 hours of flying time, maybe 2.5. I have a second 2000 mah NIMH pack that I purchased on e-bay, that lasts about 6-7 hours of flying. Between the two, I can fly for a whole weekend. Typically I run the NICD pack first. When it hits the low mark, I pull it out and put in the NIMH. Then I put the NICD on the charger while still at the field - 100 mah on a peak charger.

If I am going to fly again the second day, I put the 2000 NIMH on a peak charger at about 300 mah.

In the morning I have two fresh packs to fly all day again!

Battery Strategy

First, you can get a second pack of the same size and just switch during a long flying day.
http://www2.towerhobbies.com/cgi-bin...&I=LXH348&P=ML This pack should work


Futaba sells larger TX batteries for the 9C, and I presume the 7C as well. You can start with this one and save the smaller pack for a back-up, or start with the smaller pack, then switch to the larger pack when the first is done.

Here is a 1650 mah pack for the 9C that will probably fit the 7C as well:
http://www.servocity.com/html/9_6v_1...h_battery.html
aeajr is offline  
Reply With Quote

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off


Thread Tools
Search this Thread

Contact Us Archive Advertising Cookie Policy Privacy Statement Terms of Service