A battery charger is a device that restores the energy of a rechargeable battery using electricity. The forced electric current depends on the capacity and technology of the batteries being charged. A battery charger can have a compartment where the battery is placed while charging, or it can be directly plugged into the device that houses the battery through a connector.
Types of Battery Chargers
Kinds of Battery Chargers include the following:
Simple
A simple battery charger works by connecting the battery to a constant DC power source.
It does not alter its output based on the battery charge and charge duration.
It is inexpensive.
However, it can take a long time to charge a battery.
It also tends to overcharge it.
Timer-based
A timer-based battery charger relies on a specific pre-determined time to terminate the charge.
It is intended for a set of batteries that has been timed to determine its charge duration.
It cannot be used on lower or higher capacity batteries because it can under- or overcharge them.
Intelligent
An intelligent battery charger tracks the output current depending on the battery’s requirements.
It monitors the battery’s temperature, voltage, and charge to determine the optimum charge current.
The charging automatically stops when a full charge is detected.
Fast
A fast battery charger uses a control circuitry to rapidly charge batteries without damaging them.
Most fast chargers use cooling fans to control the temperature of the cell elements.
USB-based
A USB-based battery charger provides a five-volt power supply using the Universal Serial Bus specification.
It is used in devices with built-in USB plugs and circuitry.
Choosing Battery Chargers (Buying tips)
Compatibility: Choose a battery charger compatible with your battery’s make and model. It is advisable to buy an OEM charger, as the wrong one can potentially damage your battery. Amperage: Look for a battery charger with a charging current 15% to 25% the capacity of the battery in Ampere-hours. It is better to charge a battery slowly than rapidly.
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