Correctly set description of nonstandard cells

code/modules/mob/living/silicon/robot/robot.dm

@@ -115,9 +115,7 @@
 	ident = rand(1, 999)
 
 	if(!cell)
-		cell = new /obj/item/stock_parts/cell(src)
-		cell.maxcharge = 7500
-		cell.charge = 7500
+		cell = new /obj/item/stock_parts/cell/high(src, 7500)
 
 	if(lawupdate)
 		make_laws()
@@ -854,8 +852,7 @@
 
 /mob/living/silicon/robot/modules/syndicate/Initialize()
 	. = ..()
-	cell.maxcharge = 25000
-	cell.charge = 25000
+	cell = new /obj/item/stock_parts/cell/hyper(src, 25000)
 	radio = new /obj/item/device/radio/borg/syndicate(src)
 	laws = new /datum/ai_laws/syndicate_override()
 	addtimer(CALLBACK(src, .proc/show_playstyle), 5)

code/modules/mob/living/simple_animal/bot/mulebot.dm

@@ -54,9 +54,7 @@
 	var/datum/job/cargo_tech/J = new/datum/job/cargo_tech
 	access_card.access = J.get_access()
 	prev_access = access_card.access
-	cell = new(src)
-	cell.charge = 2000
-	cell.maxcharge = 2000
+	cell = new /obj/item/stock_parts/cell/upgraded(src, 2000)
 
 	var/static/mulebot_count = 0
 	mulebot_count += 1

code/modules/mob/transform_procs.dm

@@ -378,10 +378,7 @@
 	var/mob/living/silicon/robot/R = new /mob/living/silicon/robot(loc)
 
 	// cyborgs produced by Robotize get an automatic power cell
-	R.cell = new(R)
-	R.cell.maxcharge = 7500
-	R.cell.charge = 7500
-
+	R.cell = new /obj/item/stock_parts/cell/high(R, 7500)
 
 	R.gender = gender
 	R.invisibility = 0