Hi Mysha,
On the 330s, there is a supplementary checklist for Battery only engine start procedure, but you will need a Pneumatic ground cart for the bleed supply.
Dont you have this same checklist on the A320? Is it possible on the 320?
FCOM3.04.70 p9
SUPPLEMENTARY TECHNIQUES
POWER PLANT
ALL
3.04.70 P 9
Flight Crew Operating Manual
SEQ 050 REV 21
A330
Note :
This procedure can be followed when the aircraft electrical network is only
supplied with batteries.
Make sure that pneumatic power is available for starting the engines.
•
Perform a manual start on the LH engine following the MAN ENG START
procedure.
The secondary engine parameters are not available as long as the aircraft electrical
network is supplied by the batteries.
Note :
It is required to start first the LH engine since the Xbleed valve does not open
automatically on batteries. Moreover, the parking brake is pressurized by the
LH engine.
The EEC remains in unrated mode for 4 minutes. Follow the ECAM procedure
to recover the normal EPR mode.
•
When all the parameters are stabilized, check that the aircraft electrical network is
normal.
•
Start the second engine following the autostart procedure.
ENGINE START ON BATTERIES