diff --git a/mes_in_sct/app/action/GetBatteryInfo.php b/mes_in_sct/app/action/GetBatteryInfo.php
index b295e9c..6e8212a 100644
--- a/mes_in_sct/app/action/GetBatteryInfo.php
+++ b/mes_in_sct/app/action/GetBatteryInfo.php
@@ -34,7 +34,7 @@ class GetBatteryInfo
                     WHERE battery_id='%s' ORDER BY id DESC LIMIT 1;",
                     $battery_id
                 );
-                $ret = Db::fetch($sql);
+                $ret = Db::fetch($sql2);
 
                 list($tray, $lot, $batch, $subbatch) = [
                     $ret['tray'],