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Commonly Used Terms
Commonly Used Terms:
A, mA: Unit of measurement relating to a charge or discharge current.
1000 mA = 1A (A = Ampere, mA = Milliampere).
Ah, mAh: Unit of measurement for the capacity of a battery (Amperes x
Time Unit; h = hour). If a pack is charged for one hour at a current of 2A, it
has been fed 2Ah of energy. It receives the same quantity of charge (2Ah)
if it is charged for 4 hours at 0.5A, or 15 minutes (=1/4 hour) at 8A.
‘C’ - Rating: Capacity is also referred to as the ‘C’ rating. Some battery
suppliers recommend charge and discharge currents based on the
battery ‘C’ rating. A battery’s ‘1C’ current is the same number as the
battery’s rated capacity number, but noted in mA or amps. A 600mAh
battery has a 1C current value of 600mA, and a 3C current value of (3 x
600mA) 1800mA or 1.8A. The 1C current value for a 3200mAh battery
would be 3200mA (3.2A).
Final Charge Voltage: The voltage at which the battery’s charge limit
(capacity limit) is reached after which the charge process switches from
a high current to a low maintenance rate (trickle charge). From this point
on, any further high current charging would cause overheating and
eventual terminal damage to the pack.
Final Charge Voltage: The voltage at which the battery’s charge
limit (capacity limit) is reached after which the charge process
switches from a high current to a low maintenance rate (trickle
charge). From this point on, any further high current charging
would cause overheating and eventual terminal damage to the
pack.
Final Discharge Voltage: The voltage at which the battery’s
discharge limit it reached. The chemical composition of the
batteries determines the level of this voltage. Below this voltage,
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