HITEC X2 Ultima: DC/DC, 200 Watt, Dual Port Multi-Charger - Manual (Page 31)

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 over-heating and eventual terminal damage to the pack.
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).
- Li-Ion: multiply the total number of cells in the pack by 3.6. A 2-cell Li-Ion 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 LiFe 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 a battery.
'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).
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.
A, mA: unit of measurement relating to the charge or dis-charge current.
1000 mA = 1 A (A=Ampere,mA=Milliampere)
Final discharge voltage: the voltage at which the battery's discharge limit is
reached. The chemical composition of the battery determines the level of this
voltage. Below this voltage, the battery enters the deep-discharge zone. In this
condition, individual cells within the pack may become polarized in reverse
causing permanent damage.
We guarantee this product to be free of manufacturing and assembly defects for a
period of two years from the date-of-purchase. The warranty only applies to material
or operational defects which are present at the time of purchase. During that period,
we will repair or replace, free of service charge, products deemed defective due to
those causes. You will be required to produce proof-of-purchase (i.e. 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.
Warranty and service
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