Tweet
Here's the deal. I have two 2S (7.4v) Polyquest lipos, 4000mah, 25C, each has about 30 cycles, always balanced charged with my CellPro 4S. They both are shrink wrapped and have black silicon for water resistance (not water proof though :) ), have deans plugs, one has a PQ tap, and the other a TP tap. One pack is running great, but I think the other pack has one bad cell. After running, the one cell is about .05v lower than the other one, and near the end of the charge it's up to about 4.20v and the other good cell is still at only 4.15v. It also takes a while for the charger to balance this pack. I run these packs in series, and after a run, the good pack will take about 2300mA, and the bad one, only about 2000mA. The good pack is about 100f, and the bad one about 125f temp wise.
Now I was going to buy a 3.7v lipo cell and replace the weaker cell, but I really need a higher rated set of packs, and a set that is better matched.
So if someone is handy at soldering, this would be a easy fix (or still run the pack as is, it still works OK). Here is an example of the cell needed on eBay, item #290235351029. Its the same capacity and C rating.
I have described the lipos as best I can, if any questions please feel free to ask.
Asking $80 shipped anywhere in the US, or Canada for both.
Now I was going to buy a 3.7v lipo cell and replace the weaker cell, but I really need a higher rated set of packs, and a set that is better matched.
So if someone is handy at soldering, this would be a easy fix (or still run the pack as is, it still works OK). Here is an example of the cell needed on eBay, item #290235351029. Its the same capacity and C rating.
I have described the lipos as best I can, if any questions please feel free to ask.
Asking $80 shipped anywhere in the US, or Canada for both.