Battery degradation rates

[BenWinchester]

Describe the bug

The battery degradation rates are not behaving as expected as both the maximum and minimum capacities are degrading whereas, in reality, the minimum shouldn't degrade at any rate. This is unexpected behaviour and the minimum capacity .

To Reproduce

Steps to reproduce the behavior:
This functionality is hard baked into the code:

maximum_battery_storage = (
    battery_storage_degradation
    * electric_storage_size
    * minigrid.battery.maximum_charge  # type: ignore
    * minigrid.battery.storage_unit  # type: ignore
)
minimum_battery_storage = (
    battery_storage_degradation
    * electric_storage_size
    * minigrid.battery.minimum_charge  # type: ignore
    * minigrid.battery.storage_unit  # type: ignore
)

Expected behaviour

Here, the minimum battery storage should not be degradading

maximum_battery_storage = (
    battery_storage_degradation
    * electric_storage_size
    * minigrid.battery.maximum_charge  # type: ignore
    * minigrid.battery.storage_unit  # type: ignore
)
-minimum_battery_storage = (
-    battery_storage_degradation
-    * electric_storage_size
-    * minigrid.battery.minimum_charge  # type: ignore
-    * minigrid.battery.storage_unit  # type: ignore
-)

Screenshots

Screenshots are not applicable, code snippet has been included.

Additional Information

Desktop

(please complete the following information)

• OS: 🐧 but applicable to 🍎 and 🏁
• Installation setup: git clone
• Version: v5.0.5
• Branch, if relevant: diesel-dev but found in master

Modifications

None applicable.