Alpha Technologies XM3-HP Series - Technical Manual - Manual (Page 98)

98 017-882-B0-001 Rev. C2 (10/2013)
4.0
Maintenance
4.4 Battery Maintenance, continued
4.4.3 Disposal, Recycling and Storage Instructions, continued
4.0 Maintenance, continued
During storage please note:
• The self-discharge rate is related to ambient temperature. The lower the temperature, the
less the discharge. Batteries should be stored in a clean, ventilated, and dry location with
an ambient temperature of 32ºF to 68ºF (0ºC to 20ºC).
• It is important to track open circuit voltage which is related to the density of the
electrolyte. If the open circuit voltage is lower than 12.6V or the batteries have been
stored beyond the limits shown in Fig. 4-2, the batteries should be charged to avoid
damage caused by self-discharge.
• All batteries should be fully charged before storage. Record the storage date and next
supplemental charge date in a maintenance record and on the battery.
• Upon battery deployment, verify all batteries within each string measure in the range of
+/- 0.3VDC of the string average.
The product warranty is void if the batteries are not stored and recharged in accordance with these
guidelines.
NOTE:
32ºF (0ºC)
50ºF (10ºC)
68ºF (20ºC)
86ºF (30º
C)
104ºF
(40ºC)
Storage Time (Months)
R
esidual C
apacit
y (%)
Fig. 4-2, Capacity vs. Storage Time for AlphaCell GXL
Fig. 4-3, Capacity vs. Storage Time for AlphaCell HP
0 3 6 9 12 15 18 21 24
2.1
2.13
2.16
2.15
2.17
2.14
2.12
2.11
80%
95%
90%
100%
85%
75%
70%
Percent State of Charge
OCV Per Cell
Storage Time (Months)
77°F/
25°C 68°F/
20°C
86°F/
30°C
104°F/
40°C