diff --git a/drivers/power/rk30_factory_adc_battery.c b/drivers/power/rk30_factory_adc_battery.c
index f435bd0fc3d7..d1c8cce46b2f 100755
--- a/drivers/power/rk30_factory_adc_battery.c
+++ b/drivers/power/rk30_factory_adc_battery.c
@@ -61,7 +61,7 @@ do {\
 #define	TIMER_MS_COUNTS		 1000	
 #define	SLOPE_SECOND_COUNTS	               15	
 #define	DISCHARGE_MIN_SECOND	               30
-#define	CHARGE_MIN_SECOND	               30	
+#define	CHARGE_MIN_SECOND	               45	
 #define	CHARGE_MID_SECOND	               90	
 #define	CHARGE_MAX_SECOND	               250
 #define   CHARGE_FULL_DELAY_TIMES          10