Odyssey 25-PC1400, Техническое руководство

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Publication No: US-ODY-TM-AA September 2016
www.odysseybattery.com
(B) How long can the battery be stored?
ODYSSEY
®
batteries should be fully charged prior to
storage. Fully charged ODYSSEY batteries can be stored
for up to 24 months at 77ºF (25ºC). Battery voltage naturally
decreases with time and with increased temperature.
The battery voltage should be checked periodically. If the
battery voltage drops to 12.0 volts (35% state of charge)
it should be recharged immediately to avoid permanent
battery damage. The following can be used as a rough
approximation for the potential storage times at different
temperatures.
Figure 3: ODYSSEY
®
battery storage time at
temperatures
Storage Temperature (ºF/ºC) Storage Time (Months)
(2) High temperature discharged storage test
Two PC1200 samples were discharged in this test at the
1-hour rate to 9V per module, and then placed in storage at
122°F (50°C) in a discharged condition for 4 weeks.
At the end of 4 weeks, the two batteries were recharged
using a constant voltage (CV) charge at 14.7V per battery.
As Figure 4 below shows, both samples recovered from this
extreme case of abusive storage.
Figure 4: Recovery from high temperature discharged
storage
Constant voltage recharge at 14.7V per module
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34
Sample 1 Sample 2
Current limit for cycles 1 & 2 : 0.125C
10
Current limit for cycles 3 - 16 : 1C
10
0 2 4 6 8 10 12 14 16 18
Capacity at the 1-hr rate
32
30
28
41/5 48
59/15 36
77/25 24
95/35 12
113/45 6
(C) Can the battery recover from deep discharge
conditions?
Yes, the ODYSSEY battery can recover from extremely deep
discharges as the following test results demonstrate.
(1) German DIN standard test for overdischarge recovery
In this test, a PC925 was discharged over 20 hours (0.05C
10
rate)
2
to 10.20V. After the discharge
2
a 5
Ω
resistor was
placed across the battery terminals and the battery kept in
storage for 28 days.
At the end of the storage period, the battery was charged
at 13.5V for only 48 hours. A second 0.05C
10
discharge
yielded 97% of rated capacity, indicating that a low rate
48-hour charge after such a deep discharge was insuffcient;
however, the intent of the test is to determine if the battery
26
24
22
20
Cycle number
Extreme cold temperature performance
High discharge rate performance in extremely cold
conditions is another area in which ODYSSEY
®
batteries
excel. An example of this is shown in Figure 5. Even at
-40°F (-40°C) the battery was able to support a 550A
load for over 30 seconds before its terminal voltage
dropped to 7.2V.
Figure 5: CCA test @ -40°F (-40°C) on 31-PC2150
14.0
13.0
12.0
Voltage profile at 550A discharge
30 seconds (test requirement)
7.2V
34.1 Secs.
0 5 10 15 20 25 30 35
is recoverable from extremely deep discharges using only
11.0
Voltage
a standby foat charger. A standard automotive charger at
14.4V would have allowed the battery to recover greater
10.0
than 97% of its capacity.
9.0
These test results prove that ODYSSEY batteries can
8.0
recover from deep discharge conditions. Reinforcing this
7.0
conclusion is the next test, which is even harsher than the
6.0
DIN standard test, because in this test the battery was
stored in a discharged state at a temperature of 122°F
Run time in seconds
(50°C).
Since all ODYSSEY batteries are designed similarly, one can
expect similar outstanding cold temperature performance
from any of the other ODYSSEY batteries.
2The C10 rate of charge or discharge current in amperes is numerically equal to the 10 hour rated capacity of a battery in ampere-hours
divided by 10. Thus, a 26Ah battery at the 10-hour rate, such as the PC925, would have a C10 rate of 2.6A.
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