Amp Hours (Ah) - Refers to the amperage – the strength of the electrical current expressed in amperes that the battery can hold. The higher the Ah, the longer the battery will last in-between charges.
Capacity - Measured in Amp Hours or Milliamp Hours and is the amount of time the battery can supply the necessary voltage.
Cell - One individual battery canister. Commonly arranged with other cells to form battery packs of different voltage and capacities.
Charge - With the use of a charger, charging a battery will insert energy into it.
Condition - The process by which a battery is discharged and charged in order to guarantee maximum performance.
Discharge - The process of taking energy out of a battery.
Life Cycle - The amount of times a battery can be charged and discharged before it no longer has any power.
Memory Effect - The Effect that represents the decrease in capacity and voltage in Ni-Cd batteries due to repetitive charging and incomplete discharging. This results in loss of run-time in-between charges.
Milliamp Hours (mAh) - Applies to how much energy the battery can store – the capacity of the battery. The higher the mAh, the longer the run-time in-between charges. One mAh is the equivalent to 1/1000 Amps. IE: 2.7 Ah = 2700 mAh
Self-Discharge - If batteries are fully charged and sit on the shelf for one-two months, they will Self-Discharge. By Self-Discharging the batteries will lose capacity on their own without being used or placed in a charger that discharges the batteries.