diff --git a/code/modules/power/apc/apc_main.dm b/code/modules/power/apc/apc_main.dm
index bc1b589669a..33419d6acf8 100644
--- a/code/modules/power/apc/apc_main.dm
+++ b/code/modules/power/apc/apc_main.dm
@@ -705,7 +705,7 @@
 
 /// Used for full_charge apc helper, which sets apc charge to 100%.
 /obj/machinery/power/apc/proc/set_full_charge()
-	cell.charge = 100
+	cell.charge = cell.maxcharge
 
 /*Power module, used for APC construction*/
 /obj/item/electronics/apc