COMPONENT MAINTENANCE MANUAL
BA27
24-01-01
T
h
is docum
ent
contains D
a
ta
control
led by th
e U.S. Export Admini
str
a
tion
Reg
u
lati
ons. Di
versio
n or use
contrary to U.S. law is
proh
ibit
ed
As noted in section I, The battery may be stored up to 5 years at or below 25°C
without degradation of performance provided that an inspection and open circuit
voltage check is conducted every 12 months following the initial 2-year storage
period. When stored at temperatures above 25°C and below 35°C the battery
should be inspected every 12 months following the initial 12 months storage
period. When stored at temperatures at or above 35°C the battery should be
inspected every 6 months.
U
NOTE
U
: If the storage voltage is lower than 25.3 volts, perform a boost charge
in accordance with paragraph H.
U
NOTE:
U
Service life begins with the date of first installation on the aircraft.
The graph in Figure 6 demonstrates typical capacity retention of the battery
during storage without regular boost charges.
Charge Retention During Storage
Figure 6
Page 10
Mar 13/17
% STATE OF CHARGE AS A FUNCTION OF OPEN CIRCUIT VOLTAGE
DURING STORAGE @ 20 DEGREES CELSIUS
2.100
2.110
2.120
2.130
2.140
2.150
2.160
2.170
0
3
6
9
12
15
18
21
24
Months
O
PEN CI
RCUI
T VO
LTS /
CELL
70
74
79
83
87
91
96
100
% STATE O
F
CHARG
E