View Full Version : 7 Cell Hump Pack question - NEED HELP
06-17-2006, 09:57 PM
I want to put together a 7 cell hump pack that I saw setup in the middle of six cells (side-by-side style) that I saw in an RC car action article from May 2003 concerning the E-Maxx. I just want to make sure that I wire these packs correctly. It looks like from the the picture that one lead (let's say red dean wire) will connect three batteries ///// and the the other lead (the black wire) the other four batteries. I guess I am confused because I have only put together a series of six together. I have already removed the middle bars on my stock emaxx chassis so that the hump batt. will face down. The pack will be shrink wrapped once it is finished. Hope this makes sense. Any feedback would be appreciated.
06-17-2006, 10:03 PM
Here (http://www.traxxas.com/support/index.php?action=artikel&cat=91&id=279&highlight=e%20maxx%20cell) is an article on creating your own battery pack.
06-17-2006, 10:16 PM
I am familiar with this article. I guess my question really stems from the fact that the batteries will not be all connected in one series since I am placing the seventh cell in the middle of each pack. The article you gave me will still have the batts in a U series pattern with all batts connected in some way. The way I am wiring will not have a complete series because of the middle cell. Is it OK to do this? This is really my question?
06-17-2006, 11:02 PM
OK to clarify, do all of the batts need to be wired in one series? Please anybody!!!!!
06-17-2006, 11:11 PM
Nope, it is not ok to wire some in series and some in parallel.
If you wire in parallel, then you must have an equal number of cells wired in series in both packs. For example, you must wire two, 7.2V packs in parallel. You cannot wire 1 cell in parallel with 6 others.
Plus, if you were to do this, you would not see a performance increase.
Also, if you do this, the single cell that you are wiring in parellel will most likely explode.
06-17-2006, 11:13 PM
In series, like this:
06-17-2006, 11:40 PM
Yess!!!! Exactly!! Are the two middle cells both facing positive so you can run them in series???? right?
06-18-2006, 02:01 AM
Yes, the middle two are both facing in the same direction because if you were to flatten it out (hump going down between the two) they would alternate.
06-18-2006, 03:13 AM
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