The Correct Method Of Charging; Royal Sx Battery Management; Self-Discharge - Multiplex Royal SX 9 Instructions Manual

ROYAL SX
8.2. Charging the transmitter battery
!
Never connect the transmitter to a battery
charger without a battery in the transmitter!
High voltages may be present at the charge out-
puts of battery chargers if no battery is connected.
These voltages can easily damage the transmitter.
!
Timer-controlled fast-charging, automatic cur-
rent setting systems and REFLEX charging
must not be used with this battery!
!
Fast-charge at max. 1.4 A!
This also applies if you remove the battery
from the transmitter for charging.
!
Important when fast-charging:
The battery charger must be suitable for NiMH
cells!
Delta-Peak cut-off sensitivity < 5 mV / cell
!
Charging using mains or 12 V chargers:
It is safe to leave the battery in the transmitter for
recharging. The charger should be connected
using the multi-function socket on the underside
of the transmitter ( 9.2.). Use genuine MULTIPLEX
charge leads (e.g. transmitter charge lead with
banana plugs # 8 6020). Please refer to the cur-
rent MULTIPLEX main catalogue for information
concerning other charge leads and battery char-
gers.
8.3.

The correct method of charging

a. Switch the transmitter OFF.
b. Select a charger suitable for NiMH batteries,
switch it on and connect the charge lead to it.
c. Check correct polarity:
red plug = positive terminal (+)
blue / black plug = negative terminal (-)
Connecting the transmitter battery with re-
versed polarity may wreck the battery
(overheating, escape of corrosive electrolyte, cell
burst)!
d. Connect the charge lead to the transmitter
(back panel, CHARGE ( 9.2.)).
e. Select the charge current (max. 1.4 A).
! If you are using an automatic fast-charger,
select the current manually!
12
f. If the battery becomes hot whilst on charge, to the
point where you can no longer touch the pack, in-
terrupt the charge process immediately.
g. When the charge process is complete, first discon-
nect the transmitter / battery from the charger, and
then the charger from the power source.
h. When the charge process is complete, check the
charge quantity calculated by the battery manage-
ment circuit, and correct it if necessary ( 8.4.3. a.).
8.4.

ROYAL SX battery management

The term "battery management" means that the trans-
mitter measures the current when the unit is in use
and when the battery is on charge. From this data the
software calculates the actual state of charge of the
battery, and displays it on-screen in Status display 4
( Fig. 8.4.1.) and in the main menu ¡Setup under
Transmitter ( Fig. 8.4.2.).
When the RF module is operating (LED flashes red)
the expected residual operating time is calculated
and displayed in Status display 4. This indicates how
long the transmitter should be able to operate if the
current drain remains the same:
ROYAL SX16 3.46 DE/EN
M-LINK
Batt. voltage
Battery charge 1998mAh
Remaining time
Operating time
Fig. 8.4.1.: Status display 4
8.4.1.

Self-discharge

When the transmitter is stored, the system also takes
into account the battery's rate of self-discharge, and
corrects the available battery charge quantity accord-
ingly.
The ROYAL SX uses transmitter batteries of the type
PERMABATT+. The new manufacturing process used
for these batteries has reduced the rate of self-
discharge to around 0.07% per day (approx. 25% self-
discharge annually). The self-discharge rate of con-
ventional NiMH batteries is around 1.5% per day.
For this reason the menu ¡Setup, Transmitter in-
cludes the menu point SlfDsCharge (self-discharge):
¡Transmitter
© Battery
Alarm
Capacity
Charge
SlfDsCharge
Display
ª Contrast
Fig. 8.4.1.1.: Menu: Setup, Transmitter
In this menu point it is possible to switch the self-dis-
charge rate between "low" (approx. 25% per year)
and "normal" (approx. 1.5 % per day). The factory de-
fault setting is "low".
8.20V
7.7h
12.4h
7.10V
2100mAh
1900mAh
low
0