Are this A123 real or fake?

[sangesf]

What does all that mean?

 

[Red_Liner740]

Oscaryu1, it doesnt mean that they are "bad" cells for what you want to use them for...if u use them differently they may be fine. possibly they got rejected because their voltage sag under 30C discharge was too great? in that case, dont discharge them at 30C. Dont tax the cells too much and they may lead good lives.

 

[The Mighty Volt]

@ Oscaryu1, can you please give us more information on the cells you bought? How did you get on? Any results or data? Cheers.

 

[The Mighty Volt]

Oscaryu1, it doesnt mean that they are "bad" cells for what you want to use them for...if u use them differently they may be fine. possibly they got rejected because their voltage sag under 30C discharge was too great? in that case, dont discharge them at 30C. Dont tax the cells too much and they may lead good lives.

My idea is with these cells is to build them up in to a 12p string. Use them at high-voltage {24s} with a high-wind {8X8, 5305, 2807 etc} and run those suckers at around 30-40A.

30A from a 12p string is less than 3C, assuming the string is 12000mAgh. Even if it is only 10000mAh, it's still only 3C proper.

Most LiFePo4 should be able to handle that.

If they are genuine, but rejected A123, then long-string paralleled groups at high voltage should be easy cheese for the battery.