Auto battery chargers are used for recharging automobile batteries. These are rechargeable lead-acid batteries providing a 12 volt system. These batteries are also termed as SLI batteries for starting, lighting and ignition of an automobile engine.
A 12 volt lead acid battery charger is designed to discontinue automatize the charging process once the battery is fully charged. These are fully automatic charging at around 4 Ampere rate till the battery voltage attains a preset level.
If the battery voltage drops again the charger automatically starts charging again till the preset battery voltage. So the charger can be safely left connected to the battery indefinitely without the fear of any damage.
Features of good chargers
A good auto battery charger must be good on many counts including high performance with excellent efficiency. The durability is also a very important factor for a good industry impact. Industrial battery chargers can serve for batteries with multiple capacities and types.
Auto battery chargers are expected to have good voltage tolerances for high input and tend to consume low energy for their functioning. Other attractive features are size compactness and low weight. All these with optimum output and protection against voltage fluctuations increase the cost effectiveness. The charger is even more attractive if robust and light enough to be easily portable.
An accurate float charge prevents the overcharging of batteries. Also a good battery charger needs to have protection against battery reverse polarity, over and under voltage and over current. Intelligent thermal management is a big plus. Another must is that the charger should be short circuit proof.
A competitive price is a big factor in the success of any commodity and the same is true here too. This accompanied by quality will render any product attractive in the industry.
Intelligent auto battery chargers can be a very good business for a supplier as they can control well important operational factors like current, voltage, temperature and battery internals during the charging and discharging of the battery.
Once a good product and service is delivered the associated price is not a problem for the consumers. The same goes for the chargers which are a very important component of the automobile as well as the electronic and electrical industry. Market leading prices finally ensure the success of a brand of chargers.
Associated advantages for the batteries
Auto battery chargers enable long life for the batteries through effective design that is rugged accompanied by service that is trouble free.
Such chargers may be controlled by a microprocessor to keep a control over the current magnitude of charging and also stop automatically once the charging ends.
The 3 phases or stages of battery charging are the I-phase or the bulk phase characterized by a constant current, the Uo-phase or the absorption phase with constant over-voltage and the U-phase or the float charge with a constant voltage.
For good longevity of a typical battery the charging current should not exceed one tenth of the capacity of the battery. As the current flows the voltage of the battery rises as a result of charge absorption.
Auto battery chargers are designed based on a premise that the batteries have longer lives when maintained in a charged state. Also batteries should be stored in cool and dry conditions.
Elaborate auto chargers employ the 3-step charge profile or IUoU as mentioned above to automatically charge the battery safely. Auto battery chargers also include desulfating chargers available commercially.