Changes

==== What is battery voltage when the battery is considered empty? ====

==== What is battery voltage when the battery is considered empty? ====

  Around 2V is when the device's battery is considered depleted

  Around 2.2V is when the device's battery is low and around 2.0V battery can be considered depleted.

==== How does the battery voltage translate into the percentage of the battery? ====

==== How does the battery voltage translate into the percentage of the battery? ====