C&D Technologies RS-2061 Standby Batteries for Renewable Energy Applications - Manual (Page 13)

Monthly battery inspection
Should include the following:
•
End of charge voltage measured at battery terminal
• End of discharge voltage measured at the battery
• General appearance and cleanliness of battery, battery rack and battery area
• Charging current and voltage
• Electrolyte levels (flooded only)
• Cracks in cell containers or leakage of electrolyte
• Any evidence of corrosion at cell terminals, connectors or racks
• Ambient temperature and condition of ventilation equipment
• Pilot-cell voltage, electrolyte temperature (flooded only)
• Record findings clearly and date entries
Quarterly battery inspection
Should include the monthly observations, plus:
•
End of charge voltage of every cell and battery terminal voltage measured at battery
• End of discharge voltage of every cell and battery terminal voltage measured at battery
• Temperature of electrolyte in representative cell(s), typically one cell/tier distributed
throughout battery
Annual battery inspection
Should include the following the quarterly observations, plus:
•
Inter-cell / inter-unit connection integrity, measured with DLRO
• Record findings clearly and date original and copies
• Retorque to specified value:
Battery Maintenance
Hydration
A battery, which has been over-discharged and left in a discharged condition without immediate recharge,
is subject to terminal damage known as “hydration.” This is a phenomenon in which the specific gravity of
the electrolyte has been reduced to a level so low that it permits the lead components to dissolve into the
electrolyte, totally destroying the cells. As a result, short circuits become so extensive that is almost impossible
to keep the cells charged. Finally, the cells experience total short circuit failure.
Hydration can be avoided by the use of low-voltage cut-out devices which disconnect battery from load after
the battery, discharged at its specified load current, reaches its designed cut-off voltage.
CPV 360, 430, 550, 660, 780, 890, 1000, 1100,
1220, 1330, 1440, 1880 & 2030
150 in-lbs 17 N-m
CPV 1550, 1660, 1770, 2190, 2340, 2500 100 in-lbs 11 N-m
VRS12-33 & 50 30 in-lbs 3.5 N-m
VRS12-75, 88, 100 110 in-lbs 12.4 N-m
D, K, L-CPS 100 in-lbs 11 N-m
VRS12-155F, 175F, 215F 110 in-lbs 12.4 N-m
Model Re-Torque Value
RS02061/0514/CD 13 www.cdtechno.com