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Old 02-02-2011, 07:43 PM   #1
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Default 7.4v or 11.1v lipo battery

i am eaither going to get a 7.4v or 11.1v lipo battery. just for backyard bashing which should i get with a brushless system. it is going to be 5000mAh and 20c so 100 amps either one i get just need to know 7.4v or 11.1v. i know the 11.1v would be faster but by how much is it worth it for now. i will be buying a second one sometime in the spring just to have two so should i buy 7.4v now and then later on get a 11.1v. or just get 11.1v for both of them thanks
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Old 02-02-2011, 07:52 PM   #2
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you probably want to provide info on what type of motor and truck you are wanting to use it in.
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Old 02-02-2011, 07:55 PM   #3
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Indeed, what KV motor do you plan on running?
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Old 02-03-2011, 05:54 AM   #4
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any body it is a 3200kv team orion motor. thanks
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Old 02-03-2011, 06:45 AM   #5
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A 3200 should handle a 11.1 pretty good. Its not a high turn motor so it should handle the voltage.

Do you plan on racing at all? If so i would go for the 7.4. Even with a 7.4 lipo you will notice speed/power that a NiMH pack wont even touch.

My vote is 7.4 with plans for racing or go for the 11.1 if you are strictly bashing.

Not sure what you are running but be sure to have some sort of lipo cutoff so you dont kill your stuff.
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Old 02-03-2011, 08:19 AM   #6
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ya i have a ezrun 60a esc with a cutoff in it. i was going to get the 11.1v until hobbypartz went out of stock on them so i was thinking of the 7.4v for 20 bucks until the 11.1v goes back in stock. i will be bashing only but want two batterys any way. is there a really big speed differnce in the 11.1 and 7.4v
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Old 02-03-2011, 08:20 AM   #7
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What will your current setup be if you either want to go with a 2s or 3s.
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Old 02-03-2011, 08:22 AM   #8
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Quote:
Originally Posted by sstumpf View Post
ya i have a ezrun 60a esc with a cutoff in it. i was going to get the 11.1v until hobbypartz went out of stock on them so i was thinking of the 7.4v for 20 bucks until the 11.1v goes back in stock. i will be bashing only but want two batterys any way. is there a really big speed differnce in the 11.1 and 7.4v
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Old 02-03-2011, 08:22 AM   #9
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my setup is a team orion 3200kv motor with a ezrun 60a esc just want to know if there is a big speed difference between 2s and 3s. i can buy a 2s now and when a 3s get back in stock buy that. i will want two batterys any way
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Old 02-03-2011, 08:29 AM   #10
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Another bit of advice, since you're going to be bashing a stadium truck at high speeds and are a new driver, be SURE to get a harcase LiPo. If these things get damaged ie: punctured, torn etc... they CAN catch fire and are difficult to put out. A hardcase LiPo will protect you from this.

http://www.hobbypartz.com/77p-sl5000...-hardcase.html

Also, make sure you go to the Duratrax website and get a measurement of the battery compartment and whether or not the 3S will fit. Don't worry, if it doesn't then you can buy an inexpensive velcro battery strap or use zip ties. Just make sure that it stays in there tight. Even though it's protected by the hard case, you still don't want it flopping around.

You're also going to need to replace the battery connector on the ESC with either banana plugs (that come with the batteries) or replace both with either Traxxas or Dean's connectors (I like Traxxas better). For this you'll need the plugs and a soldering iron. Don't get a RadioShack crap one.

http://www3.towerhobbies.com/cgi-bin...&I=LXL362&P=ML

Find some place local to get your banana plugs (hardware store, electronics store etc) or order from Tower or go to a local hobby shop if you decide to with Traxxas.

Get a soldering pen/gun at a local hardware store as well. Don't get anything under 60W.

If you decide to go with banana plugs. Be extra, extra, EXTRA careful to NEVER EVER plug them in backwards (red to black, black to red) VERY BAD, very hot, very burny/melty things will happen. A Traxxas or Deans connector will not allow you to plug them in backwards. I don't want to see your new toy end up a puddle of smelly plastic and rubber.
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Last edited by Driver86; 02-03-2011 at 08:43 AM.
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Old 02-03-2011, 08:39 AM   #11
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hey driver i ended up getting a stampede with the brushless already in it off a guy so for the stampede what battery should i get
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Old 02-03-2011, 08:50 AM   #12
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Quote:
Originally Posted by sstumpf View Post
hey driver i ended up getting a stampede with the brushless already in it off a guy so for the stampede what battery should i get
I would get one each of the 2s and the 3s. Same applies to what I said above with having to change the connectors and getting a hard-case. The 3s will not fit the standard battery bar. You will need zip ties or a velcro strap.

http://www3.towerhobbies.com/cgi-bin...&I=LXXLY9&P=ML

Also, if you don't have one already on it, get a wheely bar. You'll need it with that kind of mad power in the Stampede (I have one).

http://www3.towerhobbies.com/cgi-bin...?&I=LXRTV4&P=7


The Stampede is a fun truck. It doesn't steer so well but it jumps nice and is fairly tough. The servo is the only thing that has ever broken on mine and that was from getting some big air jumps. My only regret from it is that it isn't 4WD but I bought it years ago before the 4wd came out.

With a 5400kv hobbywing brushless and 60A ESC. I couldn't keep the front wheels on the ground, also wouldn't steer or would go barrel rolling when I tried to during speed runs.......good times.....good times.
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Old 02-03-2011, 08:57 AM   #13
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yup i think i will get one of each. ill just get the 2s for now and in a month or so get a 3s. thanks for the help. ya the guy already has a wheely bar on there so i should be fine there. sounds like a fun truck i cant wait to get mine running thanks

would this one be ok i know it dosent say it is a hard pack but i watched the hobbypartz video on it and it says under the protective wrap it has a metel alloy that protects the battery form puncture here is a link

http://www.hobbypartz.com/77p-sl5000-2s1p-20c-2222.html
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Old 02-03-2011, 09:06 AM   #14
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Quote:
Originally Posted by sstumpf View Post
yup i think i will get one of each. ill just get the 2s for now and in a month or so get a 3s. thanks for the help. ya the guy already has a wheely bar on there so i should be fine there. sounds like a fun truck i cant wait to get mine running thanks

would this one be ok i know it dosent say it is a hard pack but i watched the hobbypartz video on it and it says under the protective wrap it has a metel alloy that protects the battery form puncture here is a link

http://www.hobbypartz.com/77p-sl5000-2s1p-20c-2222.html
If you're going to use that, CAREFULLY inspect it after each crash.

Here's a pic of my Stampede, "Captain America"
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7.4v or 11.1v lipo battery-rid_7483_340104.jpg  
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Old 02-03-2011, 09:10 AM   #15
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the difference between the 2s and 3s will be like night and day. With proper gearing you'll get 50+mph with the 3s easily. That was a great idea to get the wheelie bar--it'll get used for sure!
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