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COMMONLY USED TERMS
Commonly used terms
Final charge voltage: the voltage at which the battery's charge limit (capacity limit) is reached. The charge
process switches from a high current to a low maintenance rate (trickle charge) at this point. From this point
on 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 is reached. The chemical
composition of the batteries determines the level of this voltage. Below this voltage the battery enters the
deep discharge zone. Individual cells within the pack may become reverse polarized in this condition, and
this can cause permanent damage.
A, mA: unit of measurement relating to charge or discharge current. 1000 mA = 1 A (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 2 A, it has been fed 2 Ah of energy. It receives the same quantity of
charge (2 Ah) if it is charged for 4 hours at 0.5 A, or 15 minutes (=1/4 h) at 8 A.
'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).
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Ultimate 400W
Nominal voltage(V): The nominal voltage of the battery pack can be determined as follows;
-.NiCd or NiMH: multiply the total number of cells in the pack by 1.2. A 8-cell pack will have a nominal
voltage of 9.6 volts (8x1.2).
-.LiPo: multiply the total number of cells in the pack by 3.7. A 3-cell LiPo wired in series will have a nominal
voltage of 11.1 volts (3x3.7).
-.LiIo: multiply the total number of cells in the pack by 3.6. A 2-cell LiIo wired in series will have a nominal
voltage of 7.2 volts (2x3.6).
-.LiFe: multiply the total number of cells in the pack by 3.3. A 4-cell LiIo wired in series will have a nominal
voltage of 13.2 volts (4x3.3).
If the nominal voltage of the battery is not printed on the battery's label, consult your battery manufacturer or
supplier. Do not guess the rated voltage of battery.
Warranty and service
We guarantee this product to be free of manufacturing and assembly defects for a period of one year from
the time of purchase. The warranty only applies to material or operational defects, which are present at t he
time of purchase. During that period, we will repair or replace free of service charge for products deemed
defective due to those causes.
You will be required to produce proof of purchase (invoice or receipt). This warranty is not valid for
any damage or subsequent damage arising as a result of misuse, modification or as a result of failure to
observe the procedures outlined in this manual.
Ultimate 400W
WARRANTY AND SERVICE
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