Alpha Technologies AlphaCell SMU-HR - Manual (Page 14)

745-680-B2-002, Rev. B 14
3.0 Storage, continued
All lead acid batteries experience self-discharge while in open circuit storage. This causes circuit
voltage and capacity to decrease (see Fig. 3-1).
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 95ºF (0ºC to 35ºC).
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/block, or the batteries have been stored for three months,
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 (See Fig. 4-2).
32ºF (0ºC)
50ºF (10ºC)
68ºF (20ºC)
86ºF (30º
C)
104ºF
(40ºC)
Residual Capacity (%)
Storage Time (Months)
Fig. 3-1, Capacity vs. Storage Time