HITEC X4 AC Pro Instruction Manual page 6

Warnings and Safety Notes
Standard Battery Parameters
Nominal
Voltage
Max. Charge
Voltage
Storage
Voltage
Allowable Fast
Charge
Min. Discharge
Voltage
WHEN ADJUSTING YOUR X4 AC PRO CHARGING PARAMETERS, BE
SURE YOU SELECT THE PROPER BATTERY TYPE AND CELL VOLTAGE
Warning
FOR THE TYPE OF CELL YOU ARE CHARGING. CHARGING BATTERIES
WITH THE WRONG SETTINGS MAY CAUSE THE CELLS TO BURST, CATCH
FIRE OR EXPLODE.
Charging
Before charging your batteries, it is critical that you determine the maximum
allowable charge rate for your batteries. The X4 AC 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 1200mAh battery would have a 1C charge rate of 1.2
amps. A 4200mAh 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 verified 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 gauge or thickness of your
charging leads from the X4 AC 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
6
LiPo LiPo HV
3.7V/cell 3.8V/cell
4.2V/cell 4.35V/cell
3.8V/cell 3.85V/cell
≤ 1C ≤ 1C
3.0-3.3V/cell 3.1-3.4V/cell 2.9-3.2V/cell 2.6-2.9V/cell 0.1-1.1V/cell 0.1-1.1V/cell 1.8V/cell
LiIon LiFe
3.6V/cell 3.3V/cell
4.1V/cell 3.6V/cell
3.7V/cell 3.3V/cell
≤ 1C ≤ 4C
NiCd NiMH
1.2V/cell 1.2V/cell 2.0V/cell
1.5V/cell 1.5V/cell 2.46V/cell
n/a n/a
≤ 1-2C ≤ 1-2C
Pb
n/a
≤ .04C