number1cruncher wrote:Welcome to Lipo!
First, when paralleling the packs, you want to parallel both the discharge wires AND the balance taps. So in essence, when 4-6 6s packs are in parallel, you should still only have 1 set of discharge wires and 1 balance tap. This setup will only require the use of 1 voltage alarm. I recommend the CellLog8, as they are highly versatile. Below is a link:
Next the charger you chose is not necessary with your setup. You can charge all your packs at once in parallel, using a single charger, at a higher current. I recommend the one below:
Make sure to get something to make up a parallel discharge harness and a balance tap harness. GGoodrum sells a great solution for paralleling the balance taps. The discharge harness can be a little more free form depending on your connector preference. I use Andresons. Some use Deans. Others continue using the bullets.
dogman wrote:If you paralell the packs, you can leave them paralelled to charge too. So you will only need one charger. 6s is only 25 volts, so you might have an issue with the lvc in your controller if it's set too high. No problem if your scoot will run on 18v. You definitely won't want to go lower than 3v per cell on the lipo, and ought to stop at around 3.5v. The cheapie lvc's start to flash at you at 3.75, and chrip at 3.5.
On the other hand, how high voltage can your scoot take? You could get some 8s packs if 34v won't smoke the controller.
Goped ESR750 wrote:Ok interesting. So basically parrelling a cell makes it behave as one. I don't need to check the cells are balanced between the parrelells?
For example from what you are saying that to each balance wire there is actually going to be four individual cells parralleled. These cells are at no risk of inbalancing, because they are parralleled?
I am happy with that if thats the case, just wanted to clarify. So really I am treating the one big pack as a single 6s, because I have parralleled them.
Like the idea of the PCB having all the connections on it and inclusive of the low voltage meter. I was just planning on using crimps and anderson and what not but that looks a lot more tidier. Thanks for letting me now about that one.
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