diff --git a/code/modules/heavy_vehicle/_mech_setup.dm b/code/modules/heavy_vehicle/_mech_setup.dm
index 0e870814e52..2b1f8ade590 100644
--- a/code/modules/heavy_vehicle/_mech_setup.dm
+++ b/code/modules/heavy_vehicle/_mech_setup.dm
@@ -35,4 +35,9 @@ var/global/list/mecha_damage_overlay_cache = list()
 #define FRAME_REINFORCED_WELDED 3
 
 #define FRAME_WIRED 1
-#define FRAME_WIRED_ADJUSTED 2
\ No newline at end of file
+#define FRAME_WIRED_ADJUSTED 2
+
+//POWER!
+#define MECH_POWER_OFF 0
+#define MECH_POWER_TRANSITION 1
+#define MECH_POWER_ON 2
\ No newline at end of file
diff --git a/code/modules/heavy_vehicle/components/head.dm b/code/modules/heavy_vehicle/components/head.dm
index 2148b199758..318deebfa68 100644
--- a/code/modules/heavy_vehicle/components/head.dm
+++ b/code/modules/heavy_vehicle/components/head.dm
@@ -62,18 +62,18 @@
 	camera = locate() in src
 	software = locate() in src
 
-/obj/item/mech_component/sensors/proc/get_sight()
+/obj/item/mech_component/sensors/proc/get_sight(powered)
 	var/flags = 0
-	if(total_damage >= 0.8 * max_damage)
+	if((total_damage >= 0.8 * max_damage) || !powered)
 		flags |= BLIND
-	else if(active_sensors)
+	else if(active_sensors && powered)
 		flags |= vision_flags
 
 	return flags
 
-/obj/item/mech_component/sensors/proc/get_invisible()
+/obj/item/mech_component/sensors/proc/get_invisible(powered)
 	var/invisible = 0
-	if((total_damage <= 0.8 * max_damage) && active_sensors)
+	if((total_damage <= 0.8 * max_damage) && active_sensors && powered)
 		invisible = see_invisible
 	return invisible
 
diff --git a/code/modules/heavy_vehicle/equipment/_equipment.dm b/code/modules/heavy_vehicle/equipment/_equipment.dm
index 632804a5640..385fd0ef662 100644
--- a/code/modules/heavy_vehicle/equipment/_equipment.dm
+++ b/code/modules/heavy_vehicle/equipment/_equipment.dm
@@ -15,6 +15,7 @@
 	var/passive_power_use = 0
 	var/active_power_use = 1 KILOWATTS
 	var/require_adjacent = TRUE
+	var/active = FALSE //For gear that has an active state (ie, floodlights)
 
 /obj/item/mecha_equipment/examine(mob/user, distance)
 	. = ..()
@@ -59,12 +60,18 @@
 	else
 		return 0
 
+/obj/item/mecha_equipment/proc/deactivate()
+	active = FALSE
+	return
+
 /obj/item/mecha_equipment/proc/installed(var/mob/living/heavy_vehicle/_owner)
 	owner = _owner
 	//generally attached. Nothing should be able to grab it
 	canremove = FALSE
 
 /obj/item/mecha_equipment/proc/uninstalled()
+	if(active)
+		deactivate()
 	owner = null
 	canremove = TRUE
 
diff --git a/code/modules/heavy_vehicle/equipment/combat.dm b/code/modules/heavy_vehicle/equipment/combat.dm
index 50c0fe6d56a..78b30d161ce 100644
--- a/code/modules/heavy_vehicle/equipment/combat.dm
+++ b/code/modules/heavy_vehicle/equipment/combat.dm
@@ -295,8 +295,15 @@
 		START_PROCESSING(SSprocessing, src)
 	else
 		STOP_PROCESSING(SSprocessing, src)
+	active = aura.active
+	passive_power_use = active ? 1 KILOWATTS : 0
 	owner.update_icon()
 
+/obj/item/mecha_equipment/shield/deactivate()
+	if(active)
+		toggle()
+	..()
+
 /obj/item/mecha_equipment/shield/update_icon()
 	. = ..()
 	if(!aura)
@@ -314,7 +321,8 @@
 	var/obj/item/cell/cell = owner.get_cell()
 
 	var/actual_required_power = Clamp(max_charge - charge, 0, charging_rate)
-	charge += cell.use(actual_required_power)
+	if(cell)
+		charge += cell.use(actual_required_power)
 
 /obj/item/mecha_equipment/shield/get_hardpoint_status_value()
 	return charge / max_charge
diff --git a/code/modules/heavy_vehicle/equipment/utility.dm b/code/modules/heavy_vehicle/equipment/utility.dm
index 051a2764cd0..2ef3113ac4c 100644
--- a/code/modules/heavy_vehicle/equipment/utility.dm
+++ b/code/modules/heavy_vehicle/equipment/utility.dm
@@ -202,10 +202,20 @@
 /obj/item/mecha_equipment/light/attack_self(var/mob/user)
 	. = ..()
 	if(.)
-		on = !on
+		toggle()
 		to_chat(user, "You switch \the [src] [on ? "on" : "off"].")
-		update_icon()
-		owner.update_icon()
+
+/obj/item/mecha_equipment/light/proc/toggle()
+	on = !on
+	update_icon()
+	owner.update_icon()
+	active = on
+	passive_power_use = on ? 0.1 KILOWATTS : 0
+
+/obj/item/mecha_equipment/light/deactivate()
+	if(on)
+		toggle()
+	..()
 
 /obj/item/mecha_equipment/light/update_icon()
 	if(on)
diff --git a/code/modules/heavy_vehicle/interface/_interface.dm b/code/modules/heavy_vehicle/interface/_interface.dm
index 4d2f116405a..109a15bdb10 100644
--- a/code/modules/heavy_vehicle/interface/_interface.dm
+++ b/code/modules/heavy_vehicle/interface/_interface.dm
@@ -21,6 +21,7 @@
 			i++
 
 		var/list/additional_hud_elements = list(
+			/obj/screen/mecha/toggle/power_control,
 			/obj/screen/mecha/toggle/maint,
 			/obj/screen/mecha/eject,
 			/obj/screen/mecha/toggle/hardpoint,
@@ -55,6 +56,7 @@
 		hud_power = new /obj/screen/mecha/power(src)
 		hud_power.screen_loc = "EAST-1:12,CENTER-4:25"
 		hud_elements |= hud_power
+		hud_power_control = locate(/obj/screen/mecha/toggle/power_control) in hud_elements
 
 	refresh_hud()
 
diff --git a/code/modules/heavy_vehicle/interface/screen_objects.dm b/code/modules/heavy_vehicle/interface/screen_objects.dm
index b51cb504535..21bfecf3869 100644
--- a/code/modules/heavy_vehicle/interface/screen_objects.dm
+++ b/code/modules/heavy_vehicle/interface/screen_objects.dm
@@ -69,6 +69,7 @@
 	var/list/new_overlays = list()
 	if(!owner.get_cell() || (owner.get_cell().charge <= 0))
 		overlays.Cut()
+		maptext = ""
 		return
 
 	maptext = "<span style=\"font-family: 'Small Fonts'; -dm-text-outline: 1 black; font-size: 7px;\">[holding.get_hardpoint_maptext()]</span>"
@@ -223,6 +224,23 @@
 	maptext = "<span style=\"font-family: 'Small Fonts'; color: [main_color]; -dm-text-outline: 1 #242424; font-size: 6px;\">MAINT</span>"
 	notify_user(usr, SPAN_NOTICE("Maintenance protocols [owner.maintenance_protocols ? "enabled" : "disabled"]."))
 
+/obj/screen/mecha/toggle/power_control
+	name = "power control"
+	icon_state = "large_base"
+	maptext = "<span style=\"font-family: 'Small Fonts'; color: #525252; -dm-text-outline: 1 #242424; font-size: 6px;\">POWER</span>"
+	maptext_x = 1
+	maptext_y = 11
+
+/obj/screen/mecha/toggle/power_control/toggled()
+	toggled = !toggled
+	owner.toggle_power(usr)
+	var/main_color = toggled ? "#d1d1d1" : "#525252"
+	maptext = "<span style=\"font-family: 'Small Fonts'; color: [main_color]; -dm-text-outline: 1 #242424; font-size: 6px;\">POWER</span>"
+
+/obj/screen/mecha/toggle/power_control/update_icon()
+	toggled = (owner.power == MECH_POWER_ON)
+	return ..()
+
 /obj/screen/mecha/toggle/hardpoint
 	name = "toggle hardpoint lock"
 	icon_state = "base"
diff --git a/code/modules/heavy_vehicle/mech_interaction.dm b/code/modules/heavy_vehicle/mech_interaction.dm
index 8ddd6fc7045..b0087494f9c 100644
--- a/code/modules/heavy_vehicle/mech_interaction.dm
+++ b/code/modules/heavy_vehicle/mech_interaction.dm
@@ -76,7 +76,8 @@
 		return
 
 	if(!(get_cell()?.checked_use(arms.power_use * CELLRATE)))
-		to_chat(user, "<span class='warning'>Error: Power levels insufficient.</span>")
+		to_chat(user, power == MECH_POWER_ON ? SPAN_WARNING("Error: Power levels insufficient.") : SPAN_WARNING("\The [src] is powered off."))
+		return
 
 	if(user != src)
 		set_intent(user.a_intent)
@@ -236,7 +237,6 @@
 	LAZYDISTINCTADD(pilots, user)
 	sync_access()
 	playsound(src, 'sound/machines/windowdoor.ogg', 50, 1)
-	user << sound('sound/mecha/nominal.ogg',volume=50)
 	if(user.client) user.client.screen |= hud_elements
 	LAZYDISTINCTADD(user.additional_vision_handlers, src)
 	update_icon()
@@ -426,6 +426,8 @@
 				to_chat(user, "<span class='notice'>You remove \the [body.cell] from \the [src].</span>")
 				playsound(user.loc, thing.usesound, 50, 1)
 				visible_message("<span class='notice'>\The [user] pries out \the [body.cell] using the \the [thing].</span>")
+				power = MECH_POWER_OFF
+				hud_power_control.update_icon()
 				body.cell = null
 				return
 			else if(istype(thing, /obj/item/cell))
diff --git a/code/modules/heavy_vehicle/mech_life.dm b/code/modules/heavy_vehicle/mech_life.dm
index e7e22b28e4f..cfd6e07b10d 100644
--- a/code/modules/heavy_vehicle/mech_life.dm
+++ b/code/modules/heavy_vehicle/mech_life.dm
@@ -21,15 +21,25 @@
 				UNSETEMPTY(pilots)
 
 	if(radio)
-		radio.on = (head?.radio && head.radio.is_functional())
+		radio.on = (head?.radio && head.radio.is_functional() && get_cell())
 
 	if(camera)
 		camera.status = (head?.camera && head.camera.is_functional())
 
 	body.update_air(hatch_closed && use_air)
 
-	if((client || LAZYLEN(pilots)) && get_cell())
-		get_cell()?.drain_power(0, 0, calc_power_draw())
+	var/powered = FALSE
+	if(get_cell())
+		powered = get_cell().drain_power(0, 0, calc_power_draw()) > 0
+
+	if(!powered)
+		//Shut down all systems
+		if(head)
+			head.active_sensors = FALSE
+		for(var/hardpoint in hardpoints)
+			var/obj/item/mecha_equipment/M = hardpoints[hardpoint]
+			if(istype(M) && M.active && M.passive_power_use)
+				M.deactivate()
 
 	updatehealth()
 	if(health <= 0 && stat != DEAD)
@@ -38,7 +48,7 @@
 	..()
 
 	lying = 0 // Fuck off, carp.
-	handle_vision()
+	handle_vision(powered)
 	handle_hud_icons()
 
 /mob/living/heavy_vehicle/think()
@@ -60,9 +70,11 @@
 		else
 			walk(src, 0) // this stops them from moving
 
-/mob/living/heavy_vehicle/get_cell()
+/mob/living/heavy_vehicle/get_cell(force)
 	RETURN_TYPE(/obj/item/cell)
-	return body?.cell
+	if(power == MECH_POWER_ON || force) //For most intents we can assume that a powered off exosuit acts as if it lacked a cell
+		return body ? body.cell : null
+	return null
 
 /mob/living/heavy_vehicle/proc/calc_power_draw()
 	var/total_draw = 0
@@ -147,13 +159,18 @@
 	qdel(src)
 	return
 
-/mob/living/heavy_vehicle/handle_vision()
+/mob/living/heavy_vehicle/handle_vision(powered)
+	var/was_blind = sight & BLIND
 	if(head)
-		sight = head.get_sight()
-		see_invisible = head.get_invisible()
-	if(body && (body.pilot_coverage < 100 || body.transparent_cabin))
+		sight = head.get_sight(powered)
+		see_invisible = head.get_invisible(powered)
+	if(!hatch_closed || (body && (body.pilot_coverage < 100 || body.transparent_cabin)))
 		sight &= ~BLIND
 
+	if(sight & BLIND && !was_blind)
+		for(var/mob/pilot in pilots)
+			to_chat(pilot, SPAN_WARNING("The camera sensors flicker out and you lose sight of the outside world!"))
+
 /mob/living/heavy_vehicle/additional_sight_flags()
 	return sight
 
diff --git a/code/modules/heavy_vehicle/mecha.dm b/code/modules/heavy_vehicle/mecha.dm
index 79b3e0fd624..6b357750585 100644
--- a/code/modules/heavy_vehicle/mecha.dm
+++ b/code/modules/heavy_vehicle/mecha.dm
@@ -85,6 +85,9 @@
 	var/obj/screen/mecha/health/hud_health
 	var/obj/screen/mecha/toggle/hatch_open/hud_open
 	var/obj/screen/mecha/power/hud_power
+	var/obj/screen/mecha/toggle/power_control/hud_power_control
+	//POWER
+	var/power = MECH_POWER_OFF
 
 /mob/living/heavy_vehicle/Destroy()
 	unassign_leader()
@@ -229,6 +232,26 @@
 /mob/living/heavy_vehicle/GetIdCard()
 	return access_card
 
+/mob/living/heavy_vehicle/proc/toggle_power(var/mob/user)
+	if(power == MECH_POWER_TRANSITION)
+		to_chat(user, SPAN_NOTICE("Power transition in progress. Please wait."))
+	else if(power == MECH_POWER_ON) //Turning it off is instant
+		playsound(src, 'sound/mecha/mech-shutdown.ogg', 100, 0)
+		power = MECH_POWER_OFF
+	else if(get_cell(TRUE))
+		//Start power up sequence
+		power = MECH_POWER_TRANSITION
+		playsound(src, 'sound/mecha/powerup.ogg', 50, 0)
+		if(do_after(user, 1.5 SECONDS) && power == MECH_POWER_TRANSITION)
+			playsound(src, 'sound/mecha/nominal.ogg', 50, 0)
+			power = MECH_POWER_ON
+		else
+			to_chat(user, SPAN_WARNING("You abort the powerup sequence."))
+			power = MECH_POWER_OFF
+		hud_power_control?.queue_icon_update()
+	else
+		to_chat(user, SPAN_WARNING("Error: No power cell was detected."))
+
 /obj/item/device/radio/exosuit
 	name = "exosuit radio"
 	cell = null
diff --git a/html/changelogs/geeves-mech_power_states.yml b/html/changelogs/geeves-mech_power_states.yml
new file mode 100644
index 00000000000..966481de284
--- /dev/null
+++ b/html/changelogs/geeves-mech_power_states.yml
@@ -0,0 +1,7 @@
+author: Geeves
+
+delete-after: True
+
+changes:
+  - rscadd: "Added the ability to turn off exosuits. This counts as physically disconnecting the power cell, it will no longer drain, but it will also no longer charge."
+  - tweak: "Exosuits with open hatches will no longer cause blindness if the camera system goes down."
\ No newline at end of file
diff --git a/sound/mecha/mech-shutdown.ogg b/sound/mecha/mech-shutdown.ogg
new file mode 100644
index 00000000000..9733bb26df5
Binary files /dev/null and b/sound/mecha/mech-shutdown.ogg differ