emuggy batteries

hey i have 2 muggys
im converting 1 to electric i got the mamba monster 2200
i have a buddy that has a traxxas summit with lipos and he said he would sell me the lipos .
does anyone know if and how they would do with my e-muggy set up they r 5000 mah 3s 11.1v and 5000mah 2s 7.4v

other than the 5s battery what else is possible ?
and good lipo charger with a balancer and wall adaptor setup.
any info i would be thankful i have always had nitro.