Graupner Hendheld RC 2.4 GHz No. of channels: 5 33110 User Manual

82

Receiver power supply
A wide range of rechargeable four-cell and fi ve-cell NiMH 
batteries varying in capacity is available for use as the 
receiver power supply. If you are using digital servos 
we recommend that you use a fi ve-cell (6 V) pack of 
generous capacity. If your model is fi tted with a mixture of 
digital and analogue servos, it is important to check the 
maximum permissible operating voltage of all the types.
The PRX unit, Order No. 4136, provides a stabilised 
receiver power supply with a user-variable voltage from 
one or two receiver batteries; see Appendix.
For reasons of safety battery boxes or dry cells should 
never be used.
The voltage of the airborne power supply is displayed on 
the optional Smart-Box screen while the model is fl ying:

If the voltage falls below the pre-set warning threshold - 
3.8 Volt as standard, but variable in the Telemetry menu; 
see page 115 - a visual and audible low-voltage warning 
is triggered.
Nevertheless it is important to check the state of the 
batteries at regular intervals. Don’t put off charging 
the batteries until the warning signal is triggered.

The charge lead, Order No. 3021, can be connected 
directly to the NC receiver battery for charging. If the 
battery is installed in a model and you have installed one 
of the following switch harnesses: Order No. 3046, 3934 
or 3934.1 or 3934.3, the battery can be charged via the 
separate charge socket, or the charge socket which is 
built into the switch. The switch on the switch harness 
must be left at the “OFF” position for charging.

Polarity of the receiver battery connector

Observe the recommendations provided by the 

• 

charger manufacturer and the battery manufacturer 
at all times.
Keep to the maximum permissible charge current 

• 

stated by the battery manufacturer.
The maximum charge current for the transmitter 

• 

battery is 1.5 A. Limit the charge current to this value 
on the charger.
If you wish to charge the transmitter battery at a 

• 

current higher than 1.5 A, you must fi rst remove the 
pack from the transmitter, otherwise you risk dama-
ging the circuit board through overloading the con-
ductor tracks, and / or overheating the battery.
Carry out a series of test charges to ensure that the 

• 

automatic charge termination circuit works correctly 
with your battery. This applies in particular if you 
wish to charge the standard Ni-MH battery using an 
automatic charger designed for Ni-Cd batteries.
You may need to adjust the Delta Peak trigger volta-

• 

ge, if your charger provides this option.

Do not discharge the battery or carry out a battery 

• 

maintenance program via the integral charge socket. 
The charge socket is not suitable for this application.
Always connect the charge lead to the charger fi rst, 

• 

and only then to the transmitter or receiver battery. 
Observing this rule eliminates the danger of acciden-
tal short-circuits between the bare contacts of the 
charge lead plugs.
If the battery becomes hot when on charge, it is time 

• 

to check the pack’s condition. Replace it if necessary, 
or reduce the charge current.
Never leave batteries unsupervised when on 

Important information on the disposal of dry and 
rechargeable batteries:
The German Battery Order places a legal requirement 
on every consumer to return all used and exhausted 
dry cells and rechargeable batteries. It is prohibited to 
dispose of these items in the ordinary domestic waste. 
At no charge to the user, old dry and rechargeable 
batteries can be surrendered at local authority collec-
tion points, Graupner retail outlets, and any other shop 
where dry and rechargeable batteries of the same type 
are sold. You can also send batteries supplied by us to 
the following address - with adequate pre-paid postage 
- for disposal:
Graupner GmbH & Co. KG
Service: Gebrauchte Batterien (Used batteries)
Henriettenstr. 94 - 96
D-73230 Kirchheim unter Teck
You can make an important contribution to environmen-
tal protection in this way.