Draining Fuel System; Battery Service - Cirrus SR22 Pilot Operating Handbook

Cirrus Design Section 8
SR22 Handling, Servicing, Maintenance

Draining Fuel System

The bulk of the fuel may be drained from the wing fuel tanks by the use
of a siphon hose placed in the cell or tank through the filler neck. The
remainder of the fuel may be drained by opening the drain valves. Use
the same precautions as when refueling airplane. Refer to the SR22
Maintenance Manual for specific procedures.

Battery Service

Battery #1 is mounted to the forward right side of the firewall and
access is gained by removing the upper cowl. The battery vent is
connected to an acid resistant plastic tube that vents gases and
electrolyte overflow overboard. Battery #2 is located behind the
baggage compartment aft bulkhead below the parachute canister.
Battery #2 consists of two sealed, maintenance-free units and is not
considered pilot serviceable.
Battery #1 fluid level must not be brought above the baffle plates. Until
experience indicates a longer interval is justified, the battery should be
checked every 30 days or 25 flight hours to determine that the fluid
level is proper and the connections are tight and free of corrosion. Do
not fill the battery with acid use distilled water only. If the battery is not
properly charged, recharge it starting with a rate of four amperes and
finishing with a rate of two amperes in accordance with Airplane
Maintenance Manual procedures. The battery should be removed
from the airplane for charging, and quick charges are not
recommended.
Battery 2 is a maintenance free, rechargeable, sealed, lead acid
batter. Mounted in the empennage just aft of bulkhead 222, there is no
need to check the specific gravity of the electrolyte or add water to
these batteries during their service life. Refer to the Airplane
Maintenance Manual for Overhaul and Replacement Schedule.
The external power receptacle is located on the left side of the
fuselage just aft of the firewall. Refer to the Airplane Maintenance
Manual for battery servicing procedures.
P/N 13772-001 8-25
Revision A9