Dewalt 36v now Samsung IFR18650-11P or 11Q and not A123

[jk1]

has anyone tested these new samsung cells ? are they any good or no way near as good as the a123 26650 cells ?


http://dewaltownersgroup.com/index.php/topic,811.0.html

 

[jk1]

Anyone know anything about these new Samsung cells ?

 

[liveforphysics]

Battery technology has improved a huge amount since the first generation a123 m1 cells. It would definitely be possible they could have improved the dewalt batteries, but... it seems they didn't. .

Interesting.

 

[Doctorbass]

oopss


That's bad new

2.2Ah instead of 2.3.... samsung lifepo4 chemistry instead of the good known A123 that can take 30C continuous...

Doc

 

[liveforphysics]

If I'm not mistaken, didn't a123 stop making the 26650 cell entirely last year?

Could it be that they were happy with them, but had to change over simply because there was no supply left?

 

[pelle242]

26650 cells are still listed on a123 systems website. Coulde be that they lasted to long so dewalt sold to few replacment packs...

 

[Doctorbass]

I confirm.. I got one 2011 pack and one 2010 pack .. Both have the 18650 Samsung cells...

BMS desing is the same.. the only difference in the 36v battery is the cells side cover and cells The rest is identical

They show 79Wh on the pack...

 

[MitchJi]

Hi,

If I'm not mistaken, didn't a123 stop making the 26650 cell entirely last year?

Could it be that they were happy with them, but had to change over simply because there was no supply left?

If they stopped making them its more likely because Dewalt stopped buying them. Probably the Samsung cells are cheaper and in Dewalt's opinion good enough.

 

[jk1]

Dr Bass will you be doing any test with these new cells comparing, watt hours and maximum current discharge ? as for cycle life and calendar life maybe we will have to wait a few years to know??

 

[MitchJi]

Hi,

Dr Bass will you be doing any test with these new cells comparing, watt hours and maximum current discharge ?

I hope so (if he wants to sell them ). C rate should be decent, since they are from power tool packs and the capacity should at least be pretty close to meeting the spec, since I doubt Dewalt would be willing to give up a lot of capacity.

as for cycle life and calendar life maybe we will have to wait a few years to know??

If it's LiFePO cycle life and calendar life should be good.