Battery Question

[Timz3082]

I know the two batteries which we can use in the competition (the MK & EnerSys) But when we received the extra batteries we purchased we found that though it had the same model number it was a different variant of the EnerSys NP 18-12. The battery that cam in the KOP was the EnerSys NP18-12B the one we purchased were the EnerSys NP18-12 BFR which stands for Flame Retardant(the case is flame retardant) The only difference between this battery and the KOP one is that the case is flame retardant. Every other spec is exactly the same(the battery looks identical "inside" and out). I would post this in the official Q&A but I do not have my teams logon. Could someone here verify the legality of this battery? I am new here so be nice. Thanks in advance!