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05-07-2009, 01:06 PM | #1 |
Rock Stacker Join Date: Apr 2009 Location: Trondheim
Posts: 55
| battery pack on axle. how?
Hey, i am going to make a saddle pack for my crawler. i have a standard 6 cell battery and i just want to do it simple. just put 3 on each side of the servo. YES I KNOW HEY ARE A LITTLE TO BIG!! i have already spiltted the pack and tried 3 on each side, and i looked prety okey. not perfect, but almost ;) So to the question. how do i put them together? the wiring, + against - etc etc. could someone just tell med exactly how they are going to be soldered together 3 and 3? thanks for help Thomas |
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05-07-2009, 01:08 PM | #2 |
Suck it up! Join Date: Mar 2008 Location: Arkansas
Posts: 11,652
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+ to - all the way through. You'll need a jumper to go between packs.
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05-07-2009, 01:38 PM | #3 |
Quarry Creeper Join Date: Dec 2008 Location: other side of the track,the bad side
Posts: 241
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save your self the headache, pick up the elite 2/3 cells premade. My friend went the full size route and all they did was rub tire and fall off, or the tires would knock the battery bars loose cause they are just to big. |
05-07-2009, 01:38 PM | #4 |
Rock Stacker Join Date: Apr 2009 Location: Trondheim
Posts: 55
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05-07-2009, 01:56 PM | #5 |
Quarry Creeper Join Date: Nov 2007 Location: Northern
Posts: 311
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05-07-2009, 01:59 PM | #6 |
Quarry Creeper Join Date: Aug 2008 Location: in the basement cussing my broke ass rig
Posts: 329
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05-07-2009, 02:04 PM | #7 |
Rock Stacker Join Date: Dec 2008 Location: Calgary-Canada
Posts: 60
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- batt+ - batt+ -Batt+-------------- -batt+ -batt+ -batt+
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05-07-2009, 10:39 PM | #8 |
Quarry Creeper Join Date: Jan 2009 Location: Langley, BC, Canada
Posts: 297
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Well, you are only going to cause yourself a major headache, and possibly ruin your battery. I tried going the same route you are, and it just simply doesn't work well. The best thing to do is the previously mentioned pre-built packs. They fit right, and are easy to mount. Check out Ebay for good prices on them too. Depending on your ESC, you should be able to run 7 or 8 cell packs too. If you do decide to go ahead with your home built idea, make sure you don't put too much heat into the cell when you are soldering, or you will fry the seal inside the cell. Good luck!
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05-11-2009, 03:59 AM | #9 |
Newbie Join Date: Apr 2009 Location: Blaine
Posts: 7
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I bought my saddle packs at www.cheapbatterypacks.com very happy with them, you can customize them with whatever gauge of wire and many options for connection leads as well as what color you want them wrapped with. I think I paid around $35. |
05-11-2009, 06:24 AM | #10 |
Rock Crawler Join Date: Mar 2009 Location: Cottontown
Posts: 880
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If you dont understand batteries, or have no experience wiring, soldering, and heatshrinkin, then just buy the premade packs. I've been building my own packs for years, and it takes a lot of knowledge and practice to be able to get it right. You could wire it wrong, which could lead to a battery overheating and burning out one cell, or more. You can start fires. Burn yourself, and fry your electronics. Just making the pack itself can be a pain in the rear. Getting the batteries to stay together in the shape you want, heat shrinkin the individual cells, and then the pack, even if you went the taping route, its still a huge pain unless you know what your doing. Not that it cant be done, or shouldn't be done, but if you have never done it, or dont know someone that has and can teach you then just leave it, and buy some pre-made packs. Being a noob is nothing to worry about, we all were/are, but your messin with batteries, and expensive electronics. If you dont want to buy premade packs, then take your cells down to batteries plus, or some other electronics store that makes battery packs and have them do it. Usually they will even let you watch. But, if you insist on doing it youself, here are some diagrams. Remember, in each diagram, the images are mirrored from one of the picture to the other. Follow closely and you will have it wired correctly first pack And here is the second pack [IMG][/IMG] Last edited by soundcolor; 05-11-2009 at 06:58 AM. |
05-11-2009, 07:35 AM | #11 | |
I wanna be Dave Join Date: Sep 2005 Location: Houston, TX
Posts: 16,952
| Quote:
Building a split pack is easy with NiMH cells. The most difficult part is finding the configuration that works best for your crawler. After that is done, wire each battery positive to negative. One wire will cross between each side of the pack (previously called a "jumper"). This is only necessary because you cant use a battery bar to make that +/- connection. If you can solder, then just setup the batteries as shown in the above diagrams and you'll be good to go! | |
05-11-2009, 02:54 PM | #12 |
Quarry Creeper Join Date: Aug 2008 Location: iderho
Posts: 439
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Ive also heard of hot glueing the battery bars, is that effective?
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05-11-2009, 02:55 PM | #13 |
I wanna be Dave Join Date: Sep 2005 Location: Houston, TX
Posts: 16,952
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Hot glueing them to what? To the battery? If the glue is a conductor, then it will work. If it is an insulator, then it wont work. In short...no....you must solder them to the battery.
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05-11-2009, 03:10 PM | #14 |
Quarry Creeper Join Date: Aug 2008 Location: iderho
Posts: 439
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I mean putting the connectors on the battery and then putting hot glue on is and over the side of the connector, connecting it to the battery.
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05-11-2009, 03:23 PM | #15 |
I wanna be Dave Join Date: Jul 2005 Location: North Idaho
Posts: 3,648
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Here is another schematic to work off of: Make sure you have a good iron to solder the packs with, at least 60w. Save yourself the headackes though, I have two 6-cell 2/3 12500mha split packs from Cheep Batteries, they were ~ $25 per pack and a 7-cell from TCS, all have worked great. |
05-11-2009, 06:32 PM | #16 |
Rock Crawler Join Date: Mar 2009 Location: Cottontown
Posts: 880
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^^^^^ Geeeeez, why didnt I think of drawing it that way.... good job
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