diff --git a/docs/backtesting.md b/docs/backtesting.md
index c3af0798b..e1ab1c72d 100644
--- a/docs/backtesting.md
+++ b/docs/backtesting.md
@@ -262,7 +262,7 @@ It contains some useful key metrics about performance of your strategy on backte
 ```
 
 - `Backtesting from` / `Backtesting to`: Backtesting range (usually defined with the `--timerange` option).
-- `Max open trades`: Setting of `max_open_trades` (or `--max-open-trades`) - to clearly see settings for this.
+- `Max open trades`: Setting of `max_open_trades` (or `--max-open-trades`) - or number of pairs in the pairlist (whatever is lower).
 - `Total trades`: Identical to the total trades of the backtest output table.
 - `Total Profit %`: Total profit. Aligned to the `TOTAL` row's `Tot Profit %` from the first table.
 - `Trades per day`: Total trades divided by the backtesting duration in days (this will give you information about how many trades to expect from the strategy).
diff --git a/freqtrade/optimize/hyperopt.py b/freqtrade/optimize/hyperopt.py
index 20140492d..d0cdceaeb 100644
--- a/freqtrade/optimize/hyperopt.py
+++ b/freqtrade/optimize/hyperopt.py
@@ -585,9 +585,9 @@ class Hyperopt:
             'winsdrawslosses': f"{wins:>4} {draws:>4} {losses:>4}",
             'avg_profit': backtesting_results['profit_ratio'].mean() * 100.0,
             'median_profit': backtesting_results['profit_ratio'].median() * 100.0,
-            'total_profit': backtesting_results.profit_abs.sum(),
+            'total_profit': backtesting_results['profit_abs'].sum(),
             'profit': backtesting_results['profit_ratio'].sum() * 100.0,
-            'duration': backtesting_results.trade_duration.mean(),
+            'duration': backtesting_results['trade_duration'].mean(),
         }
 
     def _format_results_explanation_string(self, results_metrics: Dict) -> str:
diff --git a/freqtrade/persistence/models.py b/freqtrade/persistence/models.py
index 492d2b941..375709423 100644
--- a/freqtrade/persistence/models.py
+++ b/freqtrade/persistence/models.py
@@ -302,9 +302,11 @@ class Trade(_DECL_BASE):
             'close_profit_pct': round(self.close_profit * 100, 2) if self.close_profit else None,
             'close_profit_abs': self.close_profit_abs,  # Deprecated
 
-            # TODO: should this be in minutes or seconds??
+            'trade_duration_s': (int((self.close_date - self.open_date).total_seconds())
+                                 if self.close_date else None),
             'trade_duration': (int((self.close_date - self.open_date).total_seconds() // 60)
                                if self.close_date else None),
+
             'profit_ratio': self.close_profit,
             'profit_pct': round(self.close_profit * 100, 2) if self.close_profit else None,
             'profit_abs': self.close_profit_abs,
diff --git a/tests/rpc/test_rpc.py b/tests/rpc/test_rpc.py
index 69d79159a..60d9950aa 100644
--- a/tests/rpc/test_rpc.py
+++ b/tests/rpc/test_rpc.py
@@ -81,6 +81,7 @@ def test_rpc_trade_status(default_conf, ticker, fee, mocker) -> None:
         'amount_requested': 91.07468123,
         'stake_amount': 0.001,
         'trade_duration': None,
+        'trade_duration_s': None,
         'close_profit': None,
         'close_profit_pct': None,
         'close_profit_abs': None,
@@ -146,6 +147,7 @@ def test_rpc_trade_status(default_conf, ticker, fee, mocker) -> None:
         'amount': 91.07468123,
         'amount_requested': 91.07468123,
         'trade_duration': ANY,
+        'trade_duration_s': ANY,
         'stake_amount': 0.001,
         'close_profit': None,
         'close_profit_pct': None,
diff --git a/tests/test_persistence.py b/tests/test_persistence.py
index 76c6ec9f6..9921f541b 100644
--- a/tests/test_persistence.py
+++ b/tests/test_persistence.py
@@ -816,6 +816,7 @@ def test_to_json(default_conf, fee):
                       'amount_requested': 123.0,
                       'stake_amount': 0.001,
                       'trade_duration': None,
+                      'trade_duration_s': None,
                       'close_profit': None,
                       'close_profit_pct': None,
                       'close_profit_abs': None,
@@ -871,6 +872,7 @@ def test_to_json(default_conf, fee):
                       'amount_requested': 101.0,
                       'stake_amount': 0.001,
                       'trade_duration': 60,
+                      'trade_duration_s': 3600,
                       'stop_loss_abs': None,
                       'stop_loss_pct': None,
                       'stop_loss_ratio': None,