MM on 6s A123 and Kb 45 questions

[lincpimp]

If I was to set the lvc, 2v per cell correct? Also just got a used hypersonic charger, and wanted to know if anyone knows how to wire the balancer cable? A stock hitec servo plug will fit, just need to know where the balnce wire goes. I see that the 2s packs only have 1 balance wire, and the 3s packs have 2. But the input has 3 pins on the charger. Any ideas?

[Arct1k]

No drawings on site but think you can tell from these pics...

White at 3.3v

http://a123racing.com/a123popups/popup_2s1p.html

Guess on 3s but would guess white 3.3, red 6.6

http://a123racing.com/a123popups/popup_3s1p.html

[snellemin]

The middle pin is used for 2s packs, with the balance wire connected between the first and second pack.

The outer pins are used for 3s packs. The 1st pin is connected between the first and second battery, and the 3rd pin is connected between the second and third battery. If you connect it backwards, it won't charge. Nothing will blow.

[lincpimp]

Originally Posted by snellemin

The middle pin is used for 2s packs, with the balance wire connected between the first and second pack.

The outer pins are used for 3s packs. The 1st pin is connected between the first and second battery, and the 3rd pin is connected between the second and third battery. If you connect it backwards, it won't charge. Nothing will blow.

Ok, so on a 2s pack, the wire goes in the middle of the plug, and on a 3s pack the wires go on the outside pins. Which way do the 3s wires go? Would the balance wire between the 1st and 2nd cell go on the left side (fuse side) or the right side(led side)?

Many thanks, as I have a 2s pack charging at the moment!

[snellemin]

It would go to the fuse side.

[lincpimp]

Thanks Romano, I appreciate it! Got all of the batteries charged, now just have to wait on the diff parts I exploded to try the a123 cells out!

[kulangflow]

Originally Posted by Arct1k

10 cells - They peak at 3.6v hence 36v

I bought three packs and stripped them down partially - I used all the existing tabs... Layout of the cells isn't perfect but made life easier.

The DeWalt 28V packs have 8 a123 cells also. Just buy three of them to get the 24 cells you'll need for 2 x 6s2p.

[Sammus]

I heard DW aren't using A123 cells anymore... anyone confirmed this yet?

[kulangflow]

JohnRobHolmes confirmed that the newest DeWalt packs will no longer have a123 cells. There isn't any immediate way to know which packs are "new" and which are "old".

[aqwut]

Originally Posted by kulangflow

JohnRobHolmes confirmed that the newest DeWalt packs will no longer have a123 cells. There isn't any immediate way to know which packs are "new" and which are "old".

that just sucks big time... I was about to get some more... so what will they be using?...

[TexasSP]

So they buy cheaper cells and sell the packs at the same price.......nice!

[kulangflow]

Here's the thread with the details.

Start at post #15.

[Sammus]

Originally Posted by kulangflow

The DeWalt 28V packs have 8 a123 cells also. Just buy three of them to get the 24 cells you'll need for 2 x 6s2p.

Originally Posted by kulangflow

JohnRobHolmes confirmed that the newest DeWalt packs will no longer have a123 cells. There isn't any immediate way to know which packs are "new" and which are "old".

I personally probably wouldn't recommend someone go and by 3 packs to get a123 cells then without mentioning that :)

[kulangflow]

Yeah, good call. I guess the first line should have read, "Some of the DeWalt 28V packs ..." or something like that.

Brain fart on my part. Apologies.

[rcmonkey]

So is a cut off voltage of 2v per cell fine for A123?