GRAUPNER MC-32 Manual page 57

present a problem for either Graupner HoTT receiv-
ers nor for those servos, speed controllers, gyros and
other devices which have been specifically approved
for operation in this – higher – voltage range.
Please note however that practically all
servos, speed controllers, gyros and other
devices built in the past and most such
devices currently still offered on the market have
only a permissible voltage range of 4.8 to 6 V. Use
of these batteries in conjunction with these devices
demand use of a stabilized voltage regulator, e. g. the
PRX, No. 4136, see appendix. Otherwise there is
danger that attached devices will incur damage within
a short period of time.
LiPo 2-cell packs
For a given capacity, LiPo batteries are lighter than,
for example, NiMH batteries. LiPo batteries are also
available in hard plastic casings to protect them from
mechanical damage.
The comparatively high nominal voltage, 7.4 V, for a
2-cell LiPo pack does not present a problem for either
Graupner HoTT receivers nor for those servos, speed
controllers, gyros and other devices which have been
specifically approved for operation in this – high-
er – voltage range.
Please note however that practically all
servos, speed controllers, gyros and other
devices built in the past and most such
devices currently still offered on the market have
only a permissible voltage range of 4.8 to 6 V. Use
of these batteries in conjunction with these devices
demand use of a stabilized voltage regulator, e. g. the
PRX, No. 4136, see appendix. Otherwise there is
danger that attached devices will incur damage within
a short period of time.
Charging the receiver battery
Charger cable, No. 3021, can be plugged directly onto
the receiver's battery for charging. If the battery in
the model is connected by way of an No. 3046, 3934,
3934.1 or 3934.3 power supply cable, then charging
can be accomplished via the charging jack or special
charging connector integrated into the switch. The
switch in the power supply cable must be in its "OFF"
position for charging.
Receiver battery
connection polarity
Receiver power supply 57