Canadian Tire battery packs

[trappermike]

I've been reading threads here about using A123 cells from Dewalt battery packs,but I vaguely remember something about the Canadian tire power tool packs(?) having desirable cells in them...
Can someone fill me in on this?

 

[Doctorbass]

I've been reading threads here about using A123 cells from Dewalt battery packs,but I vaguely remember something about the Canadian tire power tool packs(?) having desirable cells in them...
Can someone fill me in on this?

It's the Yardwork 20V 6Ah pack you probably talk about,. They are lithium but li-manganese and not lithium plosphate like the A123

Doc

 

[Arlo1]

Hey doc i have about six packs that went out of order from my 10.6 v canadian tire drill and they were increadible i have a bunch of them taken apart i will try to get you pics tomorow. I thought they were a123 but i could be wrong they discontiniued all the 10.6 v battery pacs and it sucks the impact is Perfact for motorcycle stuff

 

[trappermike]

OK thanks Doctorbass,I was thinking maybe they were better,but most LiMn I've seen have a low C rate.
I've been looking around for some really hot cells,I found a source for #38140S cells 12ah-10c,and I'm waiting for price of some Li-poly High Power cells 50C,a 36v-12ah pack of these are only 6.3 lbs,but maybe mucho dollars!
Can one of your "Mad" creations suck the life out of a 50C cell pack too?? :lol:

 

[Doctorbass]

OK thanks Doctorbass,I was thinking maybe they were better,but most LiMn I've seen have a low C rate.
I've been looking around for some really hot cells,I found a source for #38140S cells 12ah-10c,and I'm waiting for price of some Li-poly High Power cells 50C,a 36v-12ah pack of these are only 6.3 lbs,but maybe mucho dollars!
Can one of your "Mad" creations suck the life out of a 50C cell pack too?? :lol:

50C and 15 or 20Ah would be 750 to 1000A... ... and at 90V, i think no ebike can sustain or hold the burst power like that :wink:

Maybe a great solution for you would be the Makita pack. they have green cylindrical 18650 cells format ( 18mm dia and 65.0mm long)

They can take 10C no prob and 2C charging rate.

They can be found most of the time in the Makita LXT lithium pack of 18V 3.0Ah ( BL1830). each cell have 1,5Ah and 3.7V nominal ( same volt range as lipo) and weight 43g each.

I assembled more than 10 ebike battery pack with them ( i get them from service center at great price, they usually are returned pack from customers because of one or two damaged cells) and i sold alot of them.. I would say more than 1500 of these packs and that became a great cheap and powerfull lithium solution over the E-S crowd.


you can search with the word KONION on the forum ( these cells are most known with this name)

Here is some great pack exemple i built:

http://www.evalbum.com/1947

http://www.evalbum.com/2198

I finally assembled 4 of these:

522Wh 6s16p
- 22.2V nom 25.2V full
- 23.5Ah

PM me for more info.

Doc

 

[trappermike]

Looks good. In the photo you used heavy copper wire and lead solder to connect the cells?
I've often wondered if silver solder may be better,I used to solder cables with it,if you're experienced with it you can solder quick without cooking anything too much...
Or solder with a high tin content to make it stronger?
As for copper strap,I've wondered about the rolls of copper strap plumbers use to hang pipes(cheap),maybe doubled if needed,does that sound crazy? It even has holes in it for cells that have studs for nuts... :?

 

[Lessss]

As for copper strap,I've wondered about the rolls of copper strap plumbers use to hang pipes(cheap)

 

[Doctorbass]

Looks good. In the photo you used heavy copper wire and lead solder to connect the cells?
I've often wondered if silver solder may be better,I used to solder cables with it,if you're experienced with it you can solder quick without cooking anything too much...
Or solder with a high tin content to make it stronger?
As for copper strap,I've wondered about the rolls of copper strap plumbers use to hang pipes(cheap),maybe doubled if needed,does that sound crazy? It even has holes in it for cells that have studs for nuts... :?

Yes i used copper wire.

i would not recommand silver solder because it would heat the cell too much. NO lithium cell like heat. it damage the cell. As you can see i soldered on original nickel strips that are ALREADY spotwelded on the cell. This allow less heat to the cells.

Doc

 

[trappermike]

OK,avoid heating or cooking the cells,I thought so...
Hey,I like the copper pipe hangers idea.

 

[Takemehome]

It's the Yardwork 20V 6Ah pack you probably talk about,. They are lithium but li-manganese and not lithium plosphate like the A123Doc

I don't know if it's only me but:
The brand new Yardworks I bought 2 years ago do not compare with the used konions I bought from you a month after the YWs.
The konions are still balanced and strong (4.15-4.16) but the YWs are way out of line.
I tried to balance them with a single cell charger but they don't stay balanced anymore.

My new pack will be konions only.