diff --git a/recovery.cpp b/recovery.cpp
index 7c83744..d3af357 100644
--- a/recovery.cpp
+++ b/recovery.cpp
@@ -116,12 +116,6 @@
 // We will try to apply the update package 5 times at most in case of an I/O error or
 // bspatch | imgpatch error.
 static const int RETRY_LIMIT = 4;
-static const int BATTERY_READ_TIMEOUT_IN_SEC = 10;
-// GmsCore enters recovery mode to install package when having enough battery
-// percentage. Normally, the threshold is 40% without charger and 20% with charger.
-// So we should check battery with a slightly lower limitation.
-static const int BATTERY_OK_PERCENTAGE = 20;
-static const int BATTERY_WITH_CHARGER_OK_PERCENTAGE = 15;
 static constexpr const char* RECOVERY_WIPE = "/etc/recovery.wipe";
 static constexpr const char* DEFAULT_LOCALE = "en-US";
 
@@ -1265,58 +1259,65 @@
   }
 }
 
-static bool is_battery_ok() {
-    struct healthd_config healthd_config = {
-            .batteryStatusPath = android::String8(android::String8::kEmptyString),
-            .batteryHealthPath = android::String8(android::String8::kEmptyString),
-            .batteryPresentPath = android::String8(android::String8::kEmptyString),
-            .batteryCapacityPath = android::String8(android::String8::kEmptyString),
-            .batteryVoltagePath = android::String8(android::String8::kEmptyString),
-            .batteryTemperaturePath = android::String8(android::String8::kEmptyString),
-            .batteryTechnologyPath = android::String8(android::String8::kEmptyString),
-            .batteryCurrentNowPath = android::String8(android::String8::kEmptyString),
-            .batteryCurrentAvgPath = android::String8(android::String8::kEmptyString),
-            .batteryChargeCounterPath = android::String8(android::String8::kEmptyString),
-            .batteryFullChargePath = android::String8(android::String8::kEmptyString),
-            .batteryCycleCountPath = android::String8(android::String8::kEmptyString),
-            .energyCounter = NULL,
-            .boot_min_cap = 0,
-            .screen_on = NULL
-    };
-    healthd_board_init(&healthd_config);
+static bool is_battery_ok(int* required_battery_level) {
+  struct healthd_config healthd_config = {
+    .batteryStatusPath = android::String8(android::String8::kEmptyString),
+    .batteryHealthPath = android::String8(android::String8::kEmptyString),
+    .batteryPresentPath = android::String8(android::String8::kEmptyString),
+    .batteryCapacityPath = android::String8(android::String8::kEmptyString),
+    .batteryVoltagePath = android::String8(android::String8::kEmptyString),
+    .batteryTemperaturePath = android::String8(android::String8::kEmptyString),
+    .batteryTechnologyPath = android::String8(android::String8::kEmptyString),
+    .batteryCurrentNowPath = android::String8(android::String8::kEmptyString),
+    .batteryCurrentAvgPath = android::String8(android::String8::kEmptyString),
+    .batteryChargeCounterPath = android::String8(android::String8::kEmptyString),
+    .batteryFullChargePath = android::String8(android::String8::kEmptyString),
+    .batteryCycleCountPath = android::String8(android::String8::kEmptyString),
+    .energyCounter = nullptr,
+    .boot_min_cap = 0,
+    .screen_on = nullptr
+  };
+  healthd_board_init(&healthd_config);
 
-    android::BatteryMonitor monitor;
-    monitor.init(&healthd_config);
+  android::BatteryMonitor monitor;
+  monitor.init(&healthd_config);
 
-    int wait_second = 0;
-    while (true) {
-        int charge_status = monitor.getChargeStatus();
-        // Treat unknown status as charged.
-        bool charged = (charge_status != android::BATTERY_STATUS_DISCHARGING &&
-                        charge_status != android::BATTERY_STATUS_NOT_CHARGING);
-        android::BatteryProperty capacity;
-        android::status_t status = monitor.getProperty(android::BATTERY_PROP_CAPACITY, &capacity);
-        ui_print("charge_status %d, charged %d, status %d, capacity %" PRId64 "\n", charge_status,
-                 charged, status, capacity.valueInt64);
-        // At startup, the battery drivers in devices like N5X/N6P take some time to load
-        // the battery profile. Before the load finishes, it reports value 50 as a fake
-        // capacity. BATTERY_READ_TIMEOUT_IN_SEC is set that the battery drivers are expected
-        // to finish loading the battery profile earlier than 10 seconds after kernel startup.
-        if (status == 0 && capacity.valueInt64 == 50) {
-            if (wait_second < BATTERY_READ_TIMEOUT_IN_SEC) {
-                sleep(1);
-                wait_second++;
-                continue;
-            }
-        }
-        // If we can't read battery percentage, it may be a device without battery. In this
-        // situation, use 100 as a fake battery percentage.
-        if (status != 0) {
-            capacity.valueInt64 = 100;
-        }
-        return (charged && capacity.valueInt64 >= BATTERY_WITH_CHARGER_OK_PERCENTAGE) ||
-                (!charged && capacity.valueInt64 >= BATTERY_OK_PERCENTAGE);
+  static constexpr int BATTERY_READ_TIMEOUT_IN_SEC = 10;
+  int wait_second = 0;
+  while (true) {
+    int charge_status = monitor.getChargeStatus();
+    // Treat unknown status as charged.
+    bool charged = (charge_status != android::BATTERY_STATUS_DISCHARGING &&
+                    charge_status != android::BATTERY_STATUS_NOT_CHARGING);
+    android::BatteryProperty capacity;
+    android::status_t status = monitor.getProperty(android::BATTERY_PROP_CAPACITY, &capacity);
+    ui_print("charge_status %d, charged %d, status %d, capacity %" PRId64 "\n", charge_status,
+             charged, status, capacity.valueInt64);
+    // At startup, the battery drivers in devices like N5X/N6P take some time to load
+    // the battery profile. Before the load finishes, it reports value 50 as a fake
+    // capacity. BATTERY_READ_TIMEOUT_IN_SEC is set that the battery drivers are expected
+    // to finish loading the battery profile earlier than 10 seconds after kernel startup.
+    if (status == 0 && capacity.valueInt64 == 50) {
+      if (wait_second < BATTERY_READ_TIMEOUT_IN_SEC) {
+        sleep(1);
+        wait_second++;
+        continue;
+      }
     }
+    // If we can't read battery percentage, it may be a device without battery. In this situation,
+    // use 100 as a fake battery percentage.
+    if (status != 0) {
+      capacity.valueInt64 = 100;
+    }
+
+    // GmsCore enters recovery mode to install package when having enough battery percentage.
+    // Normally, the threshold is 40% without charger and 20% with charger. So we should check
+    // battery with a slightly lower limitation.
+    static constexpr int BATTERY_OK_PERCENTAGE = 20;
+    static constexpr int BATTERY_WITH_CHARGER_OK_PERCENTAGE = 15;
+    *required_battery_level = charged ? BATTERY_WITH_CHARGER_OK_PERCENTAGE : BATTERY_OK_PERCENTAGE;
+    return capacity.valueInt64 >= *required_battery_level;
+  }
 }
 
 // Set the retry count to |retry_count| in BCB.
@@ -1544,9 +1545,10 @@
     // to log the update attempt since update_package is non-NULL.
     modified_flash = true;
 
-    if (retry_count == 0 && !is_battery_ok()) {
-      ui->Print("battery capacity is not enough for installing package, needed is %d%%\n",
-                BATTERY_OK_PERCENTAGE);
+    int required_battery_level;
+    if (retry_count == 0 && !is_battery_ok(&required_battery_level)) {
+      ui->Print("battery capacity is not enough for installing package: %d%% needed\n",
+                required_battery_level);
       // Log the error code to last_install when installation skips due to
       // low battery.
       log_failure_code(kLowBattery, update_package);