6
Warning and Safety Notes Continued
LiPo
LiPo HV
LiIon
LiFe
NiCd
NiMH
Pb
Nominal
Voltage
3.7V/cell
3.8V/cell
3.6V/cell
3.3V/cell
1.2V/cell
1.2V/cell
2.0V/cell
Max. Charge
Voltage
4.2V/cell
4.35V/cell
4.1V/cell
3.6V/cell
1.5V/cell
1.5V/cell
2.46V/cell
Storage
Voltage
3.8V/cell
3.85V/cell
3.7V/cell
3.3V/cell
n/a
n/a
n/a
Allowable Fast
Charge
≤ 1C
≤ 1C
≤ 1C
≤ 4C
≤ 1-2C
≤ 1-2C
≤ .04C
Min. Discharge
Voltage
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
Standard Battery Parameters
WHEN ADJUSTING YOUR RDX1 MINI 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 FIRE OR EXPLODE.
Charging
Before charging your batteries, it is critical that you determine the maximum allowable charge rate
for your batteries. The RDX1 Mini 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 off ering 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 gauge or thickness of your charging leads from the RDX1 Mini to your battery must be of
an acceptable current rating to handle the applied charge current. For maximum safety and charging
eff ectiveness, 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.
Warning
