Changes

Power armour is fully sealed, isolating the wearer from the outside environment and protecting him from gas weapons and harsh atmospheres. Should a penetration occur, resulting in a leak of the environmental seal, a quick application of [[repair cement]] is sufficient to restore its sealed environment, at least temporarily.{{Fn|60}} It also commonly includes numerous auxiliary systems such as communicators and auto-senses. The backpack contains the main power plant, environmental system and additional stabilizers.{{Fn|1}} The primary power source is a fusion generator which is capable of lasting forever with the proper care.{{Fn|60}} This is important, as should a Space Marine's power armors motive system completely fail due to critical damage, the armour is very heavy and becomes a hindrance slowing the marine down making it difficult so much as to move around in unpowered armour.{{Fn|60}} The backpack also houses a small [[Stacked Atomic Chain]] battery, powering the suit's life-support, air recycling, fluid recovery and various automated medical functions.{{Fn|65}} Still, should a marine require it, power packs also contain spare energy cells and a solar converter to recharge them.{{Fn|61}} All armour may further be augmented by various artefacts, relics and enhancements such as [[pauldrons]] and [[greaves]].{{Fn|1}} The most important part of the armour scheme of Power Armour are its [[ceramite]] armour plates. These are individually up to an inch thick and are honeycombed to help dissipate energy and localise damage suffered.{{Fn|65}} Thanks to its ceramite and [[adamantium]] exterior, Power Armour is almost invisible to heat detection.{{Fn|64}}

Space Marine Power Armour is an extraordinarily sophisticated defensive system which combines huge resistance to physical damage with a sensory array and sealed environment which protects its wearer from the ravages of the void and alien atmospheres. Integrated with the armour are networks of electro-motivated fibre bundles which mimic and augment the muscular strength of the wearer, so long as it remains powered.{{Fn|2b60}} This is important, as should a Space Marine's power armors motive system completely fail, the armour is very heavy and becomes a hindrance slowing the marine down making it difficult so much as to move around in unpowered armour.{{Fn|602b}} The true genius of the design, however, lies in its close integration with the already superhuman physiology, senses and reflexes of the Space Marine within. Working in concert, armour and Astartes together become a weapon without equal.{{Fn|2b}} Space Marine Power Armour can withstand [[Lasgun|las-fire]], [[Bolter|bolt rounds]], even [[Autocannon|cannon shots]], but is significantly weaker at resisting [[power sword]]s, which can cut through it with ease.{{Fn|59}} Power Amour reduces the damage taken from small arms somewhere between 50 to 85 percent, even offering at least some protection against all but the most devastating weapons deployed on the battlefield.{{Fn|65}}