icon fixes (#18386)

code/modules/clothing/accessories/badges_vr.dm

@@ -106,6 +106,7 @@
 /obj/item/storage/box/dosimeter
 	name = "dosimeter case"
 	desc = "This case can only hold the Dosimeter, a few films and a manual."
+	icon = 'icons/inventory/accessory/item.dmi'
 	icon_state = "dosimeter_case"
 	item_state_slots = list(slot_r_hand_str = "syringe_kit", slot_l_hand_str = "syringe_kit")
 	storage_slots = 5

code/modules/power/cells/power_cells.dm

@@ -217,7 +217,7 @@
 /obj/item/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_cells.dmi'
+	icon = 'icons/obj/power_cells_old.dmi'
 	icon_state = "backup"
 	w_class = ITEMSIZE_SMALL
 	var/amount = 150