Quote Originally Posted by Advancebo View Post
Mark III
http://halo.wikia.com/wiki/MJOLNIR_P...pe_Exoskeleton

The next prototype, the Mark III, incorporated a wireless power transmitter and receiver so that power could be transmitted directly to it, much like the Orbital Defense Platforms used to defend UNSC colonies. This design was quickly rejected for two reasons: first the armor still had a limited operational range as it had to remain within range of a bulky, immobile generator, and second, if the generator was to be knocked out it would result in the incapacitation of the suit and leave its user locked inside and helpless against enemy attacks. In the end, all of the first three prototypes had one thing in common: They were impractical on the battlefield, as large exoskeleton units did not have a substantial use in any form of combat.