Enclave power armor Enclave power armor is a general term that refers to various models of power armor used by the Enclave forces . All of them , aside from the T - 51b power armor , which remained in active use at least until 2242 , were created by Enclave engineers and scientists after the Great War . Models . T - 51b power armor . The T - 51b powered Infantry armor represented the peak of armored infantry technology before the Great War , developed in the laboratories of the West Tek Research Facility . At the end of the Anchorage Reclamation in January 2077 , the armor had become standard issue for American soldiers in the Army ' s Mechanized Cavalry Regiments . Now , only the most technologically advanced factions with ties to the pre - Great War American military or federal government , such as the Brotherhood of Steel or the Enclave , have access to this type of power armor . The armor is fitted with a back - mounted TX - 28 MicroFusion Pack which generates an output power of 60 , 000 Watts to power the HiFlo hydraulic systems built into the frame of the suit . Made of a poly - laminate composite , the outer shell of the T - 51b is lightweight and capable of absorbing over 2500 Joules of kinetic impact . The 10 - micron - thick silver ablative coating can reflect laser and other radiation emissions without damage to the composite subsurface . The armor usually carries enough fuel to last for one thousand years . Advanced power armor . The armor was created by the Enclave ' s skilled team of engineers and scientists after the Great War , as a result of a research program initiated in 2198 , part of a larger project to develop various technologies . In 2215 the first suit capable of out - performing the aging T - 51b is manufactured , entering service in 2220 . Various accidents , explosions , and deaths involved in its creation are classified by order of the Enclave ' s President Dick Richardson for the sake of morale . It is composed of lightweight metal alloys , reinforced with ceramic castings at key stress points . The motion - assist servo - motors used in the armor appear to be high - quality as well , giving the wearer a + 4 strength bonus . The suit has an auto - gyro system to keep it upright and the knees can be locked in position , to prevent the wearer from falling over , if he loses consciousness ( i . e . takes a nap ) on duty . Additionally , like the T - 51b , it includes a recycling system that can convert human waste into drinkable water , enhancing survival . The fan on the back suggests that the armor is powered by a miniature nuclear reactor . Advanced power armor Mk II . Like its older counterpart , the Mk II version is matte black with a menacing appearance , but with a few significant differences . It is composed entirely of lightweight ceramic composites rather than the usual combination of metal and ceramic plates , with a back - mounted power pack , instead of the built - in ventilated power unit of its predecessor . Early versions used under the command of President Dick Richardson in 2241 used a similar design to the standard advanced power armor . However , following the destruction of their oil rig headquarters , the Enclave forces who made their way to the Capital Wasteland had redesigned its appearance by 2277 , while keeping the " advanced power armor Mk II " designation . Tesla power armor . Mk I variant . Unlike the pre - Great War Tesla armor , this armor is a variant of the Enclave ' s advanced power armor jury - rigged with a Tesla device that is capable of dispersing a large percentage of the damage done by directed - energy attacks . Additionally , the armor makes the operation of energy weapons by the wearer easier , boosting the energy weapons skill of the operator . The fan on the back suggests that the armor is powered by a miniature nuclear reactor . The only known suit of this type is the Gannon family Tesla armor . Mk II variant . This armor is a variant of the Enclave ' s advanced power armor , Mk . II , outfitted with a Tesla device that is capable of dispersing a large percentage of the damage done by directed - energy attacks . Additionally , the armor makes the operation of energy weapons by the wearer easier , boosting the energy weapons skill of the operator . Hellfire power armor . This armor is the result of a post - War research project undertaken by the Enclave at Adams Air Force Base . It was one of several concurrent research projects , including a project to develop Duraframe Eyebot s , undertaken at Adams , though the Hellfire armor project was the only one to be fully completed . Other projects , much to chagrin of researchers such as Whitley , were canceled in favor of the new model of power armor . This heat - resistant type of power armor is used by specialized Enclave Hellfire trooper s as well as a few regular Enclave soldiers . Athena power armor . An incomplete power armor project pioneered by the Enclave in conjunction with Poseidon Energy . According to initial tests , it had defensive capabilities above and beyond any other infantry armor in use before the Great War .