The Transmitter Battery; Introduction; Transmitter Battery Fuse; Charging The Transmitter Battery (Normal Charge) - Multiplex COCKPIX SX Manuel D'utilisation

C SX
OCKPIT
8.

The transmitter battery

8.1.

Introduction

!
Read the supplementary information!
The C SX is fitted with a NiMH battery. The
OCKPIT
transmitter documentation includes an information
sheet entitled:
"Notes on using PERMABATT batteries"
There you will find important additional notes on hand-
ling NiMH batteries which must be observed.
Note:
Like all other technical components, rechargeable bat-
teries are subject to constant development. We there-
fore reserve the right to substitute a later type (e.g. of
higher capacity) for the currently standard transmitter
battery (1500 mAh NiMH).
8.1.1.

Transmitter battery fuse

The transmitter battery in the C
a self-resetting fuse which protects the transmitter elec-
tronics from short-circuit, reversed polarity and exces-
sive current, as well as the battery itself.
There is no separate fuse in the transmitter electronics.
For this reason it is essential to use the transmitter with
genuine fuse-equipped MULTIPLEX transmitter
batteries exclusively.
8.2. Charging the transmitter battery
(normal charge)
!
Never connect the transmitter to the charger
without the battery fitted!
High voltages can occur at battery charger outputs
when no battery is connected. These voltages could
damage the transmitter.
!
Read "Notes on using PERMABATT
batteries" in the transmitter documentation.
!
If the battery heats up when on charge
(transmitter case warm to the touch in the
battery area): interrupt the charge process
immediately!
The battery can be left in the transmitter for charging.
For general use we recommend that you charge the
battery overnight at the slow rate (1/10 C charge cur-
rent) (e.g. # 14 5537 plug-type charger 230V / 50Hz /
charge current: 150 mA). This method of charging
avoids premature ageing of the battery, and eliminates
the danger of damage to the transmitter electronics.
1/10 C charging with the C
1500 / 10 = 150 mA charge current.
!
SX is fitted with
OCKPIT
SX means:
OCKPIT
Page 10
How to give a "normal" charge (approx. 150 mA):
1. Switch off the transmitter.
2. Connect the transmitter to the charger.
Check correct polarity:
red plug = positive terminal (+)
blue / black plug = negative terminal (-)
Connecting with reversed polarity
may ruin the battery!
3. Calculate the approximate charge time
(1.4 x capacity / charge current = 1.4 x 1500 / 150 = 14 h)
and terminate the charge at the correct time.
First disconnect the transmitter from the charger,
then the charger from the power source (mains).
8.3. Charging the transmitter battery
(fast charge)
!
Never connect the transmitter to the charger
without the battery fitted!
High voltages can occur at battery charger outputs
when no battery is connected. These voltages may
damage the transmitter.
!
Read "Notes on using PERMABATT
batteries" in the transmitter documentation.
!
If the battery heats up when on charge
(transmitter case warm to the touch in the
battery area): interrupt the charge process
immediately!
"Fast charging" means that the battery is charged at a
current in the range 0.5 to 1 C. For the 1500 mAh bat-
tery in the Cockpit SX transmitter this means charge
currents between 750 mA and 1.5 A. Since the currents
are high, such a process is not without its risks, espe-
cially when the battery is inside an RC transmitter. For
this reason we recommend that you generally charge
the transmitter at the standard (normal) or 1/10 C
charge rate ( 8.2.).
The battery can be left in the transmitter for charging.
The brief essentials regarding fast charging:
!
Maximum charge current 1.5 A.
!
Carry out fast charging only with a charger
which features automatic charge cut-off!
!
Time-controlled fast charging is not approved.
!
The charger must be suitable for NiMH batteries
(Delta Peak cut-off sensitivity < 5 mV / cell)