• AA Size Battery, a common battery size indicator



  • AAA Size Battery, a common battery size indicator



  • Chemical used in batteries, primarily in the anode



  • a chemical compound of two or more metals



  • a measure of electric current



  • the positive (+) terminal of a battery. The anode typically contains a deficit of electrons. When connected to the cathode an electric current forms.


Battery Leakage

  • Batteries will sometimes corrode and leak electrolytic fluid. This may occur when batteries are unused for a long time or are used in the wrong devices. In such cases the battery should be discarded.



  • The total number of ampere-hours or watt-hours that can be withdrawn from a fully charged cell or battery under specified conditions of discharge.



  • The negative terminal of a battery, which contains a large quantity of electrons. Together with the anode, this is a basic building block of a battery. During discharge, the positive electrode of the cell is the cathode. During charging in a rechargeable battery, the negative electrode is the cathode.


Charging Current

  • The current used to charge up a rechargeable battery.


Charging Cycle

  • The complete process of charging up a rechargeable battery. When a rechargeable battery’s capacity has been depleted, it should be inserted into a charger for a certain period of time. The charger provides a charging current that restores the capacity to the battery so it can be used again. This process is called the charging cycle. Some rechargeable batteries can support up to 1000 charges or charging cycles.


Charging Time

  • The period of time it takes for charger to charge up rechargeable battery.



Discharge Curve

  • During battery discharge, a measure of the decrease in capacity charted against time


Electric Current

  • A flow of electrons between an anode and a cathode.


Electric Device

  • A device such as a digital camera, MP3 player that uses electric energy to operate.



  • A negatively charged component of an atom.


Fast Charge

  • The ability of a charger to charge a rechargeable battery in a few hours or less.


High Drain Device

  • A device that requires a high discharge current, such as a digital camera flash or toy racing car


Independent Charging Channels

  • Such charging channels allow simultaneous charging of different type batteries.


Low Current Leakage

  • Normally if the battery charger is not connected to input power and the batteries are left in the charger, the batteries will discharge. To minimize loss of charge, a charger should discharge the batteries using the lowest possible current.


Low Drain Device

  • A device that requires a low discharge current , such as a wrist watch, lamp or remote control.



  • milli ampere hours, a measure of current flowed within an hour


Mains Voltage

  • the household voltage, typically 110-120 or 220-240 V AC


Memory Effect

  • A phenomenon in which a cell or battery operated in successive cycles to the same, but less than full, depth of discharge temporarily loses the rest of its capacity at normal voltage levels.



  • A metal used in many older batteries, considered toxic and environmentally harmful.



Nickel Cadmium

  • A common chemical compound used in rechargeable batteries,considered toxic and environmentally harmful.


Nickel Metal Hydride (Ni-MH)

  • A common chemical compound used in rechargeable batteries.


Operating Voltage

  • The actual voltage of a batetry while it is being used (discharged)


Over-current Protection

  • The adapter ensures the charging current is within the specifications of the power regulation circuits within the equipment, preventing equipment damage or safety hazards.


Over-temperature Protection

  • If the internal case temperature rises to an unusually high level then the system will shut down. When the temperature has settled to a safe level the full charge current will be available.


Recharge Cycles

  • The number of times a battery can be recharged


Rechargeable Battery

  • A battery that can be recharged by using a charger, Typically batteries can be recharged 500-1000 times under normal conditions.NBCELL NIMH rechargeable batteries can be recharged 1000times.


Reverse Polarity Protection

  • Prevents damage to the charger if the battery is connected in reverse. The charger automatically detects if battery is inserted improperly i.e. positive is put against the negative plate and vice versa.



  • The loss of useful capacity of a battery on storage due to internal chemical action (local action).


Shelf Life

  • The duration of storage under specified conditions at the end of which the battery still retains the ability to give a specified performance.

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