02/04/2021
The terms “Charger” and “Power Supply” are often used interchangeably when they, in fact, perform completely distinct functions.
So, What's The Difference?
Power Supply:
• A power supply is designed to supply a constant voltage to a load. As the load requirements change, it continues to supply a fixed DC level.
• A power supply used as a charger will continue to pump energy into a battery regardless of its condition (i.e. fully charged, battery fault, or shorted cells).
• Essentially, a power supply is just a product that transfers energy from one place to another.
• It doesn’t have an automatic shutoff sensor so it cannot be relied on to achieve optimal battery life.
• Overcharging is not only damaging to the battery but can also pose a potential fire hazard.
Battery Charger:
• A real battery charger supplies a regulated current, first to charge the battery, and then switches to a regulated voltage mode, achieving optimal battery life.
• A battery charger will never overcharge a battery; the charger automatically reduces the voltage in order to protect itself from overcurrent switching off a fast charge when certain parameters are exceeded.
• A battery charger can also monitor battery temperature, switching off a fast charge when certain parameters are exceeded.
• Some battery chargers have a computer chip and circuit board, just like your smartphone, making them smart and efficient.
• In order to achieve maximum battery service life, a properly designed charger should always be used to charge cells.
• Overcharging and potential fire hazards are a thing of the past when using a battery charger.
By : Frank Giustino
Access Controll Profesional
