If these lrp lipos have no lugs on the bottom then they are illegal according to the proposed efra rules for lipos (max height 23.5mm, 25mm if location protrusions are included). These are 25mm and i guess with a flat bottom, also rules out the 4800mah trackpower saddles as well

as they are 30mm high.
Also the 3200 trakpower would be illegal as they are to long

if we were racing to efra rules of course.
Higher C rating is better jimmy