Operation Manual

54
Installation Notes
Two-cell LiPo battery packs
For a given capacity LiPo batteries are lighter than NiMH
batteries. To protect them from mechanical damage LiPo
batteries are also available in plastic hard-case hous-
ings. Moreover LiPo batteries only have a limited ability
to be fast-charged, and generally do not survive such a
high number of charge / discharge cycles as is claimed
for other batteries, such as Nanophosphate® types.
The comparatively high nominal voltage of 7.4 Volt of a
two-cell LiPo pack presents no problems to Graupner|SJ
HoTT receivers, nor to those servos, speed control-
lers, gyros, etc. which are expressly approved for use
at these higher voltages. Please note, however, that
virtually all servos, speed controllers, gyros etc.
sold in the past, and also most of those currently
available, are only approved for use on an operating
voltage in the range 4.8 to 6 Volt. If you wish to con-
nect these devices to the receiver, it is essential to use
a stabilised regulated power supply, such as the PRX,
Order No. 4136; see Appendix. If you neglect this, there
is a danger that the connected devices will quickly suffer
permanent damage.