diff --git a/src/config.h b/src/config.h
index 3944c7d..794488e 100644
--- a/src/config.h
+++ b/src/config.h
@@ -10,10 +10,10 @@
 #define U_BAT_INITIAL_FULL    28600       // stop charging if battery voltage reaches this threshold
 
 /* Cancel initial charge voltage hold below this battery voltage (in mV). */
-#define U_BAT_INITIAL_HOLD_CANCEL    28000
+#define U_BAT_INITIAL_HOLD_CANCEL    27000
 
 /* Transition to floating voltage levels after this time (in ms). */
-#define INITIAL_CHARGE_HOLD_TIME    3600000
+#define INITIAL_CHARGE_HOLD_TIME    1800000
 
 /* Duration of the transistion from initial charging to float (in ms). */
 #define INITIAL_TO_FLOAT_TRANSITION_TIME  600000