POLARIS: FBP backup battery cells for survival purposes

Usable with <= 100 nutrition, adds 100 nutrition.

code/modules/mob/living/carbon/human/species/species.dm

@@ -249,7 +249,8 @@
 	//Create the box
 	var/obj/item/weapon/storage/box/box = new boxtype(H)
 
-	if(!synth)
+	//If not synth, they get an air tank (if they breathe)
+	if(!synth && breath_type)
 		//Create a tank (if such a thing exists for this species)
 		var/tanktext = "/obj/item/weapon/tank/emergency/" + "[breath_type]"
 		var/obj/item/weapon/tank/emergency/tankpath //Will force someone to come look here if they ever alter this path.
@@ -264,6 +265,10 @@
 		if(tankpath)
 			new tankpath(box)
 
+	//If they are synth, they get a smol battery
+	else if(synth)
+		new /obj/item/device/fbp_backup_cell(box)
+
 	box.calibrate_size()
 
 	if(H.backbag == 1)

code/modules/power/cells/power_cells.dm

@@ -91,3 +91,40 @@
 	maxcharge = 10000
 	matter = null
 	self_recharge = TRUE
+
+//Not actually a cell, but if people look for it, they'll probably look near other cells
+/obj/item/device/fbp_backup_cell
+	name = "backup battery"
+	desc = "A small one-time-use chemical battery for synthetic crew when they are low on power in emergency situations."
+	icon = 'icons/obj/power.dmi'
+	icon_state = "fbp_cell"
+	w_class = ITEMSIZE_SMALL
+	var/amount = 100
+	var/used = FALSE
+
+/obj/item/device/fbp_backup_cell/initialize()
+	overlays += image(icon,"[icon_state]1")
+
+/obj/item/device/fbp_backup_cell/attack(mob/living/M as mob, mob/user as mob)
+	if(!used && ishuman(M))
+		var/mob/living/carbon/human/H = M
+		if(H.isSynthetic())
+			if(H.nutrition <= amount)
+				use(user,H)
+			else
+				to_chat(user,"<span class='warning'>The difference in potential is too great. [user == M ? "You have" : "[H] has"] too much charge to use such a small battery.</span>")
+		else if(M == user)
+			to_chat(user,"<span class='warning'>You lick the cell, and your tongue tingles slightly.</span>")
+		else
+			to_chat(user,"<span class='warning'>This cell is meant for use on humanoid synthetics only.</span>")
+
+	. = ..()
+
+/obj/item/device/fbp_backup_cell/proc/use(var/mob/living/user, var/mob/living/target)
+	if(used)
+		return
+	used = TRUE
+	desc += " This one has already been used."
+	overlays.Cut()
+	target.nutrition += amount
+	user.custom_emote(message = "connects \the [src] to [user == target ? "their" : "[target]'s"] charging port, expending it.")