Originally Posted by Logika
Manufacturer and probably some dimensoins or stats of the cell.
IB - Intellect Battery
EP - East Power
Different manufacturers is correct....
Because of this, the other comments about stats being different are also true.
Also, from the experiences of those who I race with and myself, it would seem that the IB4600 cells arent up to scratch in terms of lifespan.
Everyone who has them at my club has had them perform for anywhere from 3-5mths max.
And whilst this next comment could be misleading, I have never heard anyone with EP cells complain about short lifespans.