Building saddle pack with a123 M1 cells?

[crono man]

I have build my own packs in the past but these batteries will need a balancing cable.
How will teh balancing cable be soldered(WIRING DIAGRAM) in saddle pack configuration?(the pack will be 6.6v 2250mah uses 4 x m1 cells)

It will be used in my associated B44 buggy

[kufman]

I have build my own packs in the past but these batteries will need a balancing cable.
How will teh balancing cable be soldered(WIRING DIAGRAM) in saddle pack configuration?(the pack will be 6.6v 2250mah uses 4 x m1 cells)

It will be used in my associated B44 buggy

Are you putting the two saddles in series or parallel?

[kufman]

I think you are looking for something like this.

[crono man]

Hi Kufman

I drew up a layout just to be sure i understand your diagram.

If it is correct then yes your diagram is exactly what i was looking for!

One last question..

Where do you buy the small balancing cable to be soldered on the pack?

Again thank you very much for for your help.

[kufman]

You are close except your RED balance wire should be on the other end (down on the jumper wire) and the other black balance wire (the one farthest to the right) should be on the PLUS battery wire. Bascially, the balance plugs start at the negative and go one wire per cell until you get to the positive. In the case of Hyperion taps, the red wire is the "+" battery terminal and you work towards the negative. They are a little bit goofy. I buy my battery pack stuff from

http://allerc.com/

Other places like Maxamps may also sell them.

If you use Hypersion balance taps I will draw up a better diagram for you since there are two ways to make them work. Only one of the ways works with many of the cell checker devices that are on the market

OH by the way... the button end of the A123 cells is Negative so your diagram needs a little bit of work.

[crono man]

You are close except your RED balance wire should be on the other end (down on the jumper wire) and the other black balance wire (the one farthest to the right) should be on the PLUS battery wire. Bascially, the balance plugs start at the negative and go one wire per cell until you get to the positive. In the case of Hyperion taps, the red wire is the "+" battery terminal and you work towards the negative. They are a little bit goofy. I buy my battery pack stuff from

http://allerc.com/

Other places like Maxamps may also sell them.

If you use Hypersion balance taps I will draw up a better diagram for you since there are two ways to make them work. Only one of the ways works with many of the cell checker devices that are on the market

OH by the way... the button end of the A123 cells is Negative so your diagram needs a little bit of work.

Does the red balance wire have to be on the jumper wire?
(for wiring sake wouldn't be simpler to welded it on the + or - tabs?)

[chilledoutuk]

electrically it makes no difference as long as the red cable is connected between the two banks of paired cells.

[JEAM]

You can also use the famous "speed calculator" for this > http://scriptasylum.com/rc_speed/_lipo.html

[crono man]

Sorry to bug you guys about this again

But would this final setup be ok?

[kufman]

Yup, that is just about right. Just keep in mind that the button end of A123 cells is negative and not positive.