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Old Sep 12, 2012, 09:00 PM
I feel the need for speed!
scorpion1's Avatar
Southern U.S.
Joined Jun 2008
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Idea
Cool $4 dollar TX mod!!!!!!!

This little Battery cost me$3.86 and I had the small connector in my "box".

I was just sick and tired of buying AA batts all the time..............10-15 bucks each time. This 1100mah battery is a Li-fo (3.3v per cell) and it charges up to around 7v and will replace the 4 AA's my 2.4 tx's require. This mod took me 5 minutes and will save alot of $$ as i did it with my other 2.4 as well. I also got some small 3s Lipos to mod my 8 AA cell FM tx's for road rigs. :biggrin: The stock 4 AA batt holder will just come out when you take the TX apart.

Pic1. Take radio apart with several small screws
Pic2. Small RX female plug
Pic3. Connect to the appropriate wires
Pic4. Insert batt and foam to fill void
Pic5. The 1100 2cell Li-fo next to a 5000 3s.

The Li-fo: http://www.hobbyking.com/hobbyking/s...dProduct=20646
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Old Sep 12, 2012, 09:09 PM
Redneck Injuneer
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Bradenton, Florida
Joined Aug 2007
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Good idea scorp. I'd been thinking about doing the same with mine. Especially the Futaba since it eats 8 AA's at a time. In it's case it will be an easy trade over since the battery tray already has a plug on it.
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Old Sep 12, 2012, 09:15 PM
I feel the need for speed!
scorpion1's Avatar
Southern U.S.
Joined Jun 2008
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Great, and the 8 cell TX's can use a 3 cell Lipo perfectly, these are what I got

http://www.hobbyking.com/hobbyking/s...dProduct=20635
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Old Sep 12, 2012, 09:49 PM
Redneck Injuneer
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Bradenton, Florida
Joined Aug 2007
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I was thinking more along the line of one of these for the Futaba.
http://www.hobbyking.com/hobbyking/s...poly_Pack.html
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Old Sep 12, 2012, 09:58 PM
I feel the need for speed!
scorpion1's Avatar
Southern U.S.
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I saw those but wasnt going to spend twice the $$ for an RX "specific" pack.
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Old Sep 12, 2012, 10:05 PM
Redneck Injuneer
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Bradenton, Florida
Joined Aug 2007
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Quote:
Originally Posted by scorpion1 View Post
I saw those but wasnt going to spend twice the $$ for an RX "specific" pack.
I'm confused. again
The one you linked is showing me $9 and change, the one I linked is $7 and change.
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Old Sep 12, 2012, 10:10 PM
I feel the need for speed!
scorpion1's Avatar
Southern U.S.
Joined Jun 2008
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Ooops, my bad , i was thinking of the Lifo, dont know why i didnt get that one you posted, probably didnt see it...................

Also, i charged the Lifo with a 2s setting and it worked fine. I just didnt let it get up past 7.4 on the balance meter when charging it.
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Old Sep 13, 2012, 07:06 AM
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Canada, ON, Whitby
Joined Aug 2008
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I'm running the 3s one Bill posted, works great and it has dual power leads with different plugs so it'll work with more transmitter plugs out of the box.
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Old Sep 13, 2012, 09:20 PM
I feel the need for speed!
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Southern U.S.
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Just ran my Mini Sniper with it and worked well................the red on/off light on the TX sure is bright now.................
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Old Sep 14, 2012, 12:40 AM
I feel the need for speed!
scorpion1's Avatar
Southern U.S.
Joined Jun 2008
7,354 Posts
Here's a Futaba FM Digital screen Multi memory TX that came with an 8 "AA" cell tray stock. I use this for alot of my land rigs and this sucker EATS batteries like its alive. Got the 3s 1500 Lipo in, had to change the Batt lead to deans cuz it came with some real goofy one and I didnt have a match for the TX side.

When I turn it on the display now reads 12.6v............instead of it normally hovering around 11.6v with nearly fresh AA cells.

Quite pleased with my little TX upgrade session...............did two FM's and two 2.4ghz's.
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Last edited by scorpion1; Sep 14, 2012 at 12:54 AM.
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Old Sep 14, 2012, 12:55 PM
RELAX. You'll live longer
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Brisbane- Australia
Joined Jul 2007
3,301 Posts
Hi Scorp.
Great little packs those. I use them for receiver packs in a couple of boats.
Be very careful charging them on the Lipo setting. A guy at our club forgot about it & the thing exploded. Luckily there was no fire.
Surely your charger has a LiFe setting. Set that into one of the memories in the charger & charge it on that. Don't trust the Lipo setting even if you are watching it. Too easy to be distracted or called away for a few minutes by wife or kids.
All the best.
Paul.
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