Raytheon Beech Baron E55 - Troubleshooting Batteries

Ray~heon
Aircraft
Company
BARON
55
AND
58
SHOP
MANUAL
Chart
27
I
TROUBLESHOOTING LEAD-ACID
BATTERIES
INDICATION
PROBABLE
CAUSE
REMARKS
1.
No
power
indicated with
battery
a.
Batteries
discharged
or
defective.
a.
Test with
hydrometer
and
master
switch
on.
voltmeter.
b.
Open
circuit
between
battery relay
b.
Check
continuity.
and
master
switch.
c.
Master switch
defective.
c.
Check
switch
for
operation.
Replace
if
necessary.
d.
Defective
battery
relay.
d.
Check
relay
for
operation.
Replace
if
necessary.
2.
Power
on
with
master
switch
off.
a.
Master
switch
defective
a.
Check switch for
operation.
Replace
if
necessary.
b.
Battery
relay
contacts
stuck,
b.
Replace
relay.
Chart
28
I
TROUBLESHOOTING NICKEL-CADMIUM BATTERIES
INDICATION
PROBABLE CAUSE
REMARKS
1.
Apparent
lossof
capacity.
a.
Cells
unbalanced.
a.
Equalize
cell
voltage
by
performing
full
capacity
discharge
cycle.
b.
Electrolyte
level
too
low.
b.
Charge,
adjust
electrolyte
level,
and
capacity
test.
c.
Charging
rate too
low in
airplane,
c.
Check
and
adjust airplane
charging
system.
d. Too
little
usage
or
shallow
d. See
a
above.
discharges.
2.
Completefailure tooperate.
a.
Loose
or
broken lead,
a.
Repair
or
replace.
b.
Loose
or
disengaged
terminals
in b.
Repair
or
replace
any
damaged
battery.
hardware,
capacity
test.
c.
Battery
not
charged,
c.
Charge
and
capacity
test.
d. Cell
open
internally.
d.
Replace
defective
cell
and
capacity
test.
3.
Excessivespewage
(crystalline
a.
Excessive
charge
rate.
a.
Clean the
battery,
recondition,
deposits
on
outside
of
cells).
adjust
the
electrolyte
level and
capacity
test.
b.
Electrolyte
level
too
high.
b.
Clean Cell.
E21
SECTION
13
Dec
31/03Page
77