C&D Technologies RS-2044 msEndurII Series - Manual (Page 9)

RS02044/1114/CD 9 www.cdtechno.com
Part 5 – Storage Prior to Installation
5.1 Storage Conditions
Store batteries indoors in a cool, well ventilated, clean, dry location and place in service as soon as possible
after receiving.
5.2 Storage Temperature and Duration
The recommended temperature for storage is 50°F (10°C) to 77°F (25°C). msEndur II cells may be
stored at these temperatures for approximately six months; longer storage is detrimental to the cell and
can void the warranty if they are not given a freshening charge within that time period. A convenient
measurement to check the condition of the cell during storage is to measure the Open Circuit Voltage
(OCV). A fully charged ATP cell has an approximate OCV of 2.16 volts. If the ATP series cell OCV drops
more than 0.04 volts from its received voltage or to less than 2.12 volts, a freshening charge is required. A
fully charged ATLP cell has an approximate OCV of 2.10 volts. If the ATLP cell OCV drops more than
0.04 volts from its received voltage or to less than 2.06 volts, a freshening charge is required. Be sure to
record dates and conditions (voltage, current and recharge times) for all charges during storage.
Avoid exposure of a partially discharged cell to temperatures less than 0°F (-18°C), as this may cause the
battery electrolyte to freeze. This can permanently damage the battery and can cause potentially hazardous
leakage.
Allowable storage temperature range of 20°F (-7°C) to 90°F (32°C) is acceptable. Higher than normal
storage temperatures (77°F [25°C] nominal) will accelerate internal self-discharge of a cell by a factor of
two for each 18°F (10°C) over the recommended nominal 77°F (25°C) storage temperature. This, in turn,
will reduce the allowable time before initial and/or boost charging by a corresponding amount.
If a freshening charge is required, it is very important that boost or freshening charges (2.40 v/c for ATP and
2.34 v/c for ATLP for 12 to 16 hours) be given at the appropriate time to avoid major remedial action or
loss of product as noted in Part 7.
Part 6 - Installation
6.1 Locating Battery System
Install the batteries in a clean, cool, and dry location. Avoid areas with direct sunlight and heat sources,
including electrical equipment vents or exhausts. The recommended battery room temperature of 77°F
(25°C) provides the best combination of performance and life. Lower temperatures will reduce battery
performance, while higher temperatures will improve battery performance but reduce battery service life.
Avoid sources of hot or cold air that could cause temperature variations of ±5°F (3°C) within the battery
assembly. Such variations will compromise optimum battery performance such as the float voltages of
individual cells.
For additional information on installing batteries in modular systems, refer to the Section 6.5 for installation
details.