Before Flight; Installation Of Battery Packs Into Sailplane - FES GEN2 14S User Manual

FES BATTERY PACK GEN2 Version 1.18

4. Before flight

Before each flight battery packs should be recharged, especially if engine was used
during previous flight, so that maximum energy is available if needed. This is very
important in cold conditions, where voltage drop under high power load could be
significant.
Both battery packs must have approximately the same cell voltage levels
(close to 4.16 V per cell), before usage. Using two packs with more than 1 V
difference in total voltage levels between packs is not allowed!
4.1 Installation of Battery packs to the sailplane
1. Open battery compartment cover
2. Check that "Power switch" is OFF
3. Check that FCU instrument and all other instruments (Flight computer, Flarm, Radio,
Transponder, PDA...) are switched OFF
4. Insert first pack into the fuselage so that terminals are facing forward and slide it back
to rear position.
5. Insert second pack into the fuselage so that terminals are facing rearward.
6. Place pair of fixation plates in the middle of rear pack, above carrying strap and
tighten fixation knob.
7. Place pair of fixation plates in the middle of front pack, above carrying strap and
tighten fixation knob.
8. Lift power cables from side support.
9. Plug in shorter cable, with 8mm pin in BLACK housing, to minus marked 8mm socket
of front battery pack.
10. Plug in longer cable with 10mm pin in RED housing, to plus marked 10mm socket of
rear battery pack.
11. Insert DATA cable connectors, to each battery pack DATA connector.
Before connection, make sure that orientation is correct. Connector should
be plugged in straight direction, otherwise pins could be damaged!
12. Turn ON "BMS switch" on each battery pack, and wait until initial check is completed
13. Close battery compartment cover.
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September 2017