diff --git a/src/batterymodel/models/__main__.py b/src/batterymodel/models/__main__.py
index aa3f2a7..395222e 100644
--- a/src/batterymodel/models/__main__.py
+++ b/src/batterymodel/models/__main__.py
@@ -23,4 +23,10 @@ def main():
     market2_start = market2.get_start_time()
     start_time = min(market_1_start, market2_start)
 
+    for item in market_1_start:
+        print(item)
+        battery.update(increment, None, market1)
 
+
+if __name__ == "__main__":
+    main()
\ No newline at end of file
diff --git a/src/batterymodel/models/battery.py b/src/batterymodel/models/battery.py
index 47bd3f0..a7ddfbd 100644
--- a/src/batterymodel/models/battery.py
+++ b/src/batterymodel/models/battery.py
@@ -33,8 +33,20 @@ class BatteryModel:
         self._total_profit = 0.0
 
     def update(self, increment: datetime.timedelta, previous_state: "BatteryModel", market_data_increment: MarketDataIncrement):
+        self.market_decision(increment, previous_state, market_data_increment)
         pass
 
+    def market_decision(self, increment: datetime.timedelta, previous_state: "BatteryModel", market_data_increment: MarketDataIncrement):
+        if self._battery_state == BatteryState.IDLE and self._current_charge > 0:
+            # Sell, I guess, to whoever offers more
+            for market_data_increment in market_data_increment.markets:
+                self._battery_state = BatteryState.DISCHARGING
+                self._current_charge_rate = self._max_discharge_rate
+                self._current_market_rate = market_data_increment.get_max_market_rate()
+                self._current_charge_value = self._current_charge_rate * self._current_charge
+            return
+
+
     def handle_charge_or_discharge(self, increment: datetime.timedelta, previous_state: "BatteryModel"):
         if self._battery_state != BatteryState.CHARGING:
             total_charge_this_increment = self._current_charge_rate * (increment.total_seconds()/60.0)
diff --git a/src/batterymodel/models/market.py b/src/batterymodel/models/market.py
index 1e10f99..7ccb7ce 100644
--- a/src/batterymodel/models/market.py
+++ b/src/batterymodel/models/market.py
@@ -38,3 +38,12 @@ class MarketDataIncrement:
     def __init__(self, timestamp: datetime.datetime, markets: List[Tuple[datetime.datetime, float]]):
         self.timestamp = timestamp
         self.markets = markets
+
+    def get_max_market_rate(self):
+        rate = 0
+        highest = ()
+        for i in self.markets:
+            if i[1] > rate:
+                rate = i[1]
+                highest = i
+        return highest
\ No newline at end of file