diff --git a/APP/peripheral.c b/APP/peripheral.c
index 6772a55..63020c5 100644
--- a/APP/peripheral.c
+++ b/APP/peripheral.c
@@ -40,23 +40,23 @@
 #define SBP_PHY_UPDATE_DELAY                 2400
 
 // What is the advertising interval when device is discoverable (units of 625us, 80=50ms)
-#define DEFAULT_ADVERTISING_INTERVAL         (160 * 10)
+#define DEFAULT_ADVERTISING_INTERVAL         (160 * 1)
 
 // Limited discoverable mode advertises for 30.72s, and then stops
 // General discoverable mode advertises indefinitely
 #define DEFAULT_DISCOVERABLE_MODE            GAP_ADTYPE_FLAGS_GENERAL
 
 // Minimum connection interval (units of 1.25ms, 6=7.5ms)
-#define DEFAULT_DESIRED_MIN_CONN_INTERVAL    (100)
+#define DEFAULT_DESIRED_MIN_CONN_INTERVAL    (80 * 5)
 
 // Maximum connection interval (units of 1.25ms, 100=125ms)
-#define DEFAULT_DESIRED_MAX_CONN_INTERVAL    400
+#define DEFAULT_DESIRED_MAX_CONN_INTERVAL    (80 * 10)
 
 // Slave latency to use parameter update
-#define DEFAULT_DESIRED_SLAVE_LATENCY        5
+#define DEFAULT_DESIRED_SLAVE_LATENCY        3
 
 // Supervision timeout value (units of 10ms, 100=1s)
-#define DEFAULT_DESIRED_CONN_TIMEOUT         200
+#define DEFAULT_DESIRED_CONN_TIMEOUT         (100 * 5)
 
 // Company Identifier: WCH
 #define WCH_COMPANY_ID                       0x07D7
diff --git a/APP/peripheral_main.c b/APP/peripheral_main.c
index 256074f..889c35d 100644
--- a/APP/peripheral_main.c
+++ b/APP/peripheral_main.c
@@ -84,17 +84,15 @@ __attribute__((noinline)) void Main_Circulation()
             EMV_CHARGE_EN;
             PRINT("EMV_CHARGE_EN\n");
 
-            // DelayMs(500);
+            DelayMs(500);
 
-            // EMV_CHARGE_OFF_DEINIT;
-            // PRINT("EMV_CHARGE_OFF_DEINIT 1s\n");
-
-            DelayMs(1000);
+            EMV_CHARGE_OFF_DEINIT;
+            PRINT("EMV_CHARGE_OFF_DEINIT 500 ms\n");
 
             // EMV_CTRL
             EMV_ON;
             PRINT("EMV_ON\n");
-            DelayMs(1000);
+            DelayMs(100);
 
             BOOST_OFF_DEINIT;
             BEEP_OFF_DEINIT;