diff --git a/etc/dbus-serialbattery/bms/lltjbd.py b/etc/dbus-serialbattery/bms/lltjbd.py
index 0d1bbfd9..5c658fac 100644
--- a/etc/dbus-serialbattery/bms/lltjbd.py
+++ b/etc/dbus-serialbattery/bms/lltjbd.py
@@ -552,7 +552,8 @@ def read_gen_data(self):
         ) = unpack_from(">HhHHHHhHHBBBBB", gen_data)
         self.voltage = voltage / 100
         self.current = current / 100
-        if not self.cycle_capacity:
+        # https://github.com/Louisvdw/dbus-serialbattery/issues/769#issuecomment-1720805325
+        if not self.cycle_capacity or self.cycle_capacity < capacity_remain:
             self.cycle_capacity = capacity
         self.soc = round(100 * capacity_remain / self.cycle_capacity, 2)
         self.capacity_remain = capacity_remain / 100
diff --git a/etc/dbus-serialbattery/utils.py b/etc/dbus-serialbattery/utils.py
index e9220e2a..69481ca9 100644
--- a/etc/dbus-serialbattery/utils.py
+++ b/etc/dbus-serialbattery/utils.py
@@ -38,7 +38,7 @@ def _get_list_from_config(
 
 
 # Constants
-DRIVER_VERSION = "1.0.20230919dev"
+DRIVER_VERSION = "1.0.20230921dev"
 zero_char = chr(48)
 degree_sign = "\N{DEGREE SIGN}"