Wednesday, July 2, 2014

Battery chargers; How Battery Charger works; How to calculate battery charging time

Chargeable batteries are created and used extensively now for different programs. But with no battery charger these batteries can not become rather valuable. Learn how a battery charger works in this post.

Introduction Whether the battery-charger your mobile phone, emergency light or the vehicle you possess, the considerable use of batteries is evident everywhere. Chargeable batteries can also be popular in inverter's, where its DC voltage is converted into mains AC voltage and can be used to power the household appliances during mains power failure.
The need for a battery is based on the fact that it is electricity that you can carry. Additionally when the electricity in a battery gets exhausted, it topped up and could be refilled or charged (clearly that is accurate simply with the chargeable ones) making it a very efficient and a power house that is economic.
A battery charger circuit may be consistent and fairly straightforward in design but usually batteries do not like crude charging voltages and therefore the battery in a good shape is consistently advocated the use of great quality, continuous voltage kind of chargers to keep it.

Before learning the way to use a battery charger, it will likely be significant first to understand its working principle.

How does a Battery Charger Work? Here a transformer is used to step down the AC mains input voltage to the amount that was needed according to the transformer's rating.
-- This transformer is consistently a high electricity type and is not unable to create a high current output signal as required by most lead-acid batteries.
-- This DC is fed to an electronic circuit which regulates the voltage into a constant amount and is applied to the battery where the energy is stored through an internal process of chemical reaction.
-- In automatic battery chargers a voltage sensor circuit is incorporated to sense the voltage of the battery under charge. The charger is mechanically switched OFF when the battery voltage reaches the needed optimum amount.

How to Calculate a Battery's Charging or Discharging time
-- a chargeable battery's rated current capacity can vary according to its uses.
-- If for example a 4 AH completely charged battery is discharged at 4 ampere speed, then ideally it should take an hour for this to get fully discharged (but virtually it could be seen that the back up time is considerably less than an hour due to the existing inefficiency in all batteries).
-- Similarly if the exact same battery is charged at 4 ampere rate, then it should take one hour to get it completely charged. But it is never a great practice to discharge or charge batteries at their current ratings that are full.
The charging and the dispatching process should be completed slowly for about 10 hours. So to figure out the optimum charging current of a battery, merely break up its AH by 10, the same is not false to discover its correct constant discharge rate.

-- How to Use a Battery Charger?
Now let's study exactly how you can use a battery charger through the following brief explanation: -- A general sort of battery charger will consist of two output terminals.
-- It must also contain an ammeter to exhibit current and a voltage selector switch charging.
-- Start by selecting the appropriate charging voltage in accordance with the battery used.
-- Taking due care of the polarity, you might join the negative of the battery under charge and the terminal that is red.
-- The ammeter will immediately indicate the charging current. The battery will now gradually get charged, the ammeter reading will go down proportionately.
-- Once it reaches the zero mark, means the battery is not empty and may be disconnected in the charger.