HITEC X1 PRO Mode D'emploi page 26

1.1. Warnings and Safety Information
Standard Battery Parameters
Nominal Voltage:
Max. Charge Voltage:
Storage Voltage:
Min. Discharge Voltage:
When adjusting your X1 Pro charging parameters, be sure you select the proper battery type and cell voltage
for the type of cell you are charging. Charging batteries with the wrong settings may cause the cells to burst,
catch fi re or explode.
Charging
Before charging your batteries, it is critical that you determine
the maximum allowable charge rate for your batteries. The
X1 Pro is capable of charging at high rates that may not be
suitable or safe for your particular batteries. For example,
Lithium cells are typically safe to charge at 1C, or the total
mAh÷1000. A 1200 mAh battery would have a 1C charge
rate of 1.2 amps. A 4200 mAh battery would have a 1C
charge rate of 4.2 amps. Some manufacturers are offering
Lithium cells that can be charged at greater than 1C but
this should ALWAYS be verifi ed before charging a Lithium
battery at rates higher than 1C. Voltage is just as critical as
the charging amperage rate and this is determined by the
number of cells in series, or "S". For example, a 3S LiPo is
rated at 11.1 volts ("S" multiplied by a single LiPo cell with
a nominal voltage of 3.7 volts DC. 3 cells x 3.7 volts each
equals 11.1 volts DC).
Connect the battery's main leads to the charger output: red
is positive and black is negative. Keep in mind that the
Discharging
The X1 Pro discharging functions are for two specifi c purposes:
· Refreshing the capacity of a Nickel-based battery that has
lost capacity over time (NiMH or NiCd).
· Reducing the voltage of a Lithium battery for safe storage.
Lithium chemistry battery packs should only
be discharged to their minimum safe voltage,
no lower. Deep discharging a Lithium cell will
dopermanent damage. Refer to the Standard
Battery Parameters table on page 26 of this
manual for Minimum Discharge Voltages.
26
LiPo LiIon
3.7 V/cell 3.6 V/cell
4.2 V/cell 4.1 V/cell
3.8 V/cell 3.7 V/cell
≥ 3.3 V/cell ≥ 2.5 V/cell
Professional Balance Charger, Discharger
LiFe NiCd
3.3 V/cell 1.2 V/cell
3.6 V/cell 1.5 V/cell
3.3 V/cell n/a
≥ 2.0 V/cell ≥ 1.0 V/cell
gauge or thickness of your charging leads from the X1 Pro
to your battery must be of an acceptable current rating
to handle the applied charge current. For maximum safety
and charging effectiveness, always match or exceed the
main battery lead rating when assembling or selecting your
charging leads. If you charge a battery at a high current rate
(amperage) with a charging lead not rated for the chosen
amperage, the wire could get hot, catch fi re, short out and/
or potentially destroy your battery and the charger. When in
doubt, always use a higher gauge wire (lower AWG number).
It is common to see charging leads constructed of 14AWG,
16AWG or 18AWG wire.
Always refer to recommendations from your battery
manufacturer for your specifi c battery type and size before
initiating a charge or discharge process.
Do not attempt to disassemble or modify Lithium or
Lead-Acid battery packs.
LiPo Charge/Discharge Cycling
Lithium batteries are known to reach full capacity after a
break-in period of about 10 charge/discharge cycles. We do
not recommend you use the X1 Pro charger to do this, normal
use and recharging will achieve the same results. If you wish
to perform a Lithium break-in on the bench with the X1 Pro,
discharging to minimum acceptable voltages and performing
a balance charge at 1C maximum rate is recommended. If
you choose to break in your Lithium batteries under normal
use, charging at only 1C for the fi rst ten cycles will help ensure
full performance and service life from your Lithium cells.
NiMH Pb
1.2 V/cell 2.0 V/cell
1.5 V/cell 2.46 V/cell
n/a n/a
≥ 0.85 V/cell ≥ 1.75 V/cell