Add emergency suit cooler unit with fixed lowpower cell

code/game/objects/items/devices/suit_cooling.dm

@@ -18,7 +18,7 @@
 
 	var/on = 0				//is it turned on?
 	var/cover_open = 0		//is the cover open?
-	var/obj/item/weapon/cell/cell
+	var/obj/item/weapon/cell/cell = /obj/item/weapon/cell/high
 	var/max_cooling = 15				// in degrees per second - probably don't need to mess with heat capacity here
 	var/charge_consumption = 3			// charge per second at max_cooling
 	var/thermostat = T20C
@@ -30,7 +30,8 @@
 
 /obj/item/device/suit_cooling_unit/Initialize()
 	. = ..()
-	cell = new/obj/item/weapon/cell/high(src)	//comes not with the crappy default power cell - because this is dedicated EVA equipment
+	if(ispath(cell))
+		cell = new cell(src)
 
 /obj/item/device/suit_cooling_unit/Destroy()
 	qdel_null(cell)
@@ -200,3 +201,23 @@
 			. += "The charge meter reads [round(cell.percent())]%."
 		else
 			. += "It doesn't have a power cell installed."
+
+/obj/item/device/suit_cooling_unit/emergency
+	icon_state = "esuitcooler"
+	cell = /obj/item/weapon/cell
+	w_class = ITEMSIZE_NORMAL
+
+/obj/item/device/suit_cooling_unit/emergency/updateicon()
+	return
+
+/obj/item/device/suit_cooling_unit/emergency/get_cell()
+	if(on)
+		return null // Don't let recharging happen while we're on
+	return cell
+
+/obj/item/device/suit_cooling_unit/emergency/attackby(obj/item/weapon/W as obj, mob/user as mob)
+	if (W.is_screwdriver())
+		to_chat(user, "<span class='warning'>This model has the cell permanently installed!</span>")
+		return
+
+	return ..()