C&D Technologies RS-1476 Standby Battery Vented Cell - Manual (Page 6)

1.3 Cell type identification
C&D presently produces lead calcium alloy and lead antimony alloy products. The distinction can be made by
checking the cell type label (lead calcium white label, lead antimony green label), the operating instruction label, or
the stamping on top of the post as calcium alloy may have “CA” and antimony alloy may be stamped with “SB.”
SECTION 2 - STORAGE and SHELF LIFE
2.1 Storing charged and wet batteries
Store batteries indoors in a cool (60°F to 85°F) dry location, preferably at 77°F (25°C), and place in service
before the date stamped on the shipping carton. The indicated storage time is based on storage at 77°F (25°C)
and is 6 months for lead calcium alloy and 3 months for lead antimony alloy. Storage outside of the allowable
temperature range (0°F – 120°F) is permissible for up to 3 months; storage at temperatures above 77°F
(25°C) requires monthly cell voltage monitoring. Adequate freeze protection must be met for low temperature
storage, as this will ruin the battery and can cause potentially hazardous leakage. Refer to Table 1 for data on
temperature versus freezing point for sulfuric acid solutions, the electrolyte contained within the cells. If you
have any questions about storage requirements and/or limitations please contact C&D Field Service.
Storage in hot and/or moist environment may result in white oxidation of the lead. Refer to Part 1, Section 4.6
for cleaning instructions. Exercise caution when operating or storing batteries at low temperatures because of
the possibility of electrolyte freezing. Although the specific gravity of a fully charged battery may present no
freezing problem, discharged batteries with depleted electrolyte cells may freeze. Table 1 provides information
on freezing temperatures versus specific gravity.
Table 1 - Freezing Temperature Vs. Specific Gravity
Charged and wet batteries should be placed in service before the date stamped on the shipping carton when
stored at 77°F (25°C). If storage beyond this time is required or temperature is in excess of 77°F (25°C), monitor
battery at monthly intervals. A convenient measurement technique is to read the open circuit voltage and
compare it with Table 2. If the open circuit voltage drops 0.02 volts from the nominal value shown in Table 2 the
cell(s) must be given a boost charge.
Product must be installed and on float charge within one year of ship date. Contact C&D Field Service if
this cannot be met.
Failure to charge as noted voids battery warranty. If you prefer to check specific gravity, a drop of 25 points
(0.025) below the nominal value requires that the battery be given a boost charge. The boost charge is
conducted at equalize voltage as specified in PART 2, Table 6 Equalizing Charge. The boost charge may be
given to individual cells, groups of cells, or the entire battery. If constant current charging equipment is used,
charge at 5 amperes per 100 ampere-hours rated 8 hour capacity for a period not exceeding 24 hours.
DANGER
For maximum safety, do NOT handle cells during or after boost charge for 24-48 hours
PART 1
RECEIVING AND INSTALLATION (CONTINUED)
Specific Gravity
at 77°F (25°C)
Freezing Temperature
Celsius Fahrenheit
1.000
1.050
1.100
1.150
1.200
1.250
1.300
1.350
1.400
0.0
-3.3
-7.7
-15.0
-27.0
-52.0
-70.0
-49.0
-36.0
+32
+26
+18
+5.0
-17.0
-61.0
-95.0
-56.0
-33.0
RS1476/0215/CD 4 www.cdtechno.com