Technical data

13773-001
24-30
Page 1730 Nov 2000
If it is necessary to prepare electrolyte to 1.285 specific gravity from con-
centrated sulfuric acid, always pour the acid into the water, not the water
into the acid. Use non-metallic receptacles and/or funnels except for lead or
lead-lined containers. While charging Battery 1, the battery cell caps must
be installed.
Electrolyte splashed into the eyes is extremely dangerous. If this should
happen, force the eye open and flood it with cool, clean water for approxi-
mately five minutes. A physician should be called immediately when an
accident occurs, and “on-the-spot” medical attention given if possible. If a
physician cannot come to the scene of the accident immediately, follow the
physician’s instructions concerning actions to take. Do not add eye drops
or other medication unless advised to do so by the physician. If acid (elec-
trolyte) is taken internally drink large quantities of water or milk. Follow with
milk of magnesia, beaten egg, or vegetable oil. Call a physician immediately.
CAUTION: If electrolyte is spilled or splashed on any surface of the aircraft, it should be neu-
tralized with baking soda solution and rinsed with clean water. Do not store acid in
excessively warm locations or in direct sunlight.
(a) Acquire necessary tools, equipment, and supplies.
(b) Verify the ignition switch is in the off position and remove the key. (Refer to POH)
(c) Ensure BAT 1, BAT 2, and AVIONICS master switches are in the off position.
(d) Remove battery. (Refer to 24-30)
CAUTION: To prevent contamination from one cell to the other, immediately reinstall
cell caps into their original location after testing the specific gravity. While
charging Battery 1, the battery cell caps must be installed.
(e) Remove the battery cell covers and check the specific gravity of each cell. (Refer to 24-30)
Note: The electrolyte should have a specific gravity of 1.225 or above to avoid
freezing. If level is too low for accurate hydrometer readings, add just
enough distilled water to cover plates and charge battery to mix electrolyte.
(f) With the battery cell caps installed and the charger turned off, connect the battery charger
leads to the proper terminals: positive cable to the positive terminal (+) and negative cable
to the negative terminal (-). Connect the negative cable last.
Note: The battery should be initially charged at 3 amps until the cells are gassing,
then reduce the rate to 1.5 amps. It will take approximately 18 to 24 hours to
fully charge the battery. During the period of charging, electrolyte tempera-
ture should be maintained between 60 - 110°F.
(g) Turn on battery charger (at 3-amp setting) and allow the battery to charge until the cells
are gassing. Once the cells start gassing, reduce the rate of charge to 1.5 amps.
Description P/N or Spec. Supplier Purpose
Battery Charger (constant-
voltage)
24 Volt Any Source Charge Battery 1