C&D Technologies RS-2044 msEndurII Series - Manual (Page 22)

RS02044/1114/CD 22 www.cdtechno.com
Battery identifications
1. Date of readings
2. Battery total float voltage
3. Ambient operating temperature
4. Date and description of initial or last equalizing charge
5. General observations from visual inspection
6. Individual cell voltages
7. Connection resistance measurement
8. *Optional: One of the following for cell ohmic testers: Impedance, Conductance or Resistance
9. Name of inspection technician
If you observe any unusual readings or visual indications, consult your C&D Technologies representative
and send a copy of your latest maintenance report to your local C&D representative
or the technical services department at C&D.
*Cell ohmic readings may vary by ±20% of the C&D Technologies published values. This variation does
not necessarily indicate a problem with the condition of the battery.
Part 8 – Battery Operation
8.1 Float Charging
Standby batteries are connected to control circuits, which must be energized at all times.
msEndur II batteries must be constant voltage charged as described in section 7. Connected to a load in
parallel with a continuously operating power supply, these batteries assure instantaneous support of the
load in the event of a power failure or brownout. In addition to operating the connected load, the power
supply keeps the standby battery fully charged. This parallel interconnection and operation is called float
service. Maximum battery life can be expected in full float service, in which the frequency and depth of
discharges are kept at a minimum. Deep and/or frequent discharges can shorten service life, even with
proper battery maintenance.
8.2 Equalize or Freshening Charge
Under normal operating conditions, it is not necessary to equalize or refresh the ATP and ATLP series of
msEndur II batteries when used within the criteria described in sections 5.2 and 7.
An equalizing charge should be performed if individual cell voltages fall 0.05 volts below the average
float voltage as specified in Table 1. Presence of a minimum voltage does not imply a battery is
malfunctioning or that it will not provide the necessary power when called upon.
IMPORTANT:
Initial charge records are essential for review by C&D Technologies’ sales/service
r epresentatives in the event of a problem. Since records can materially affect your
warranty, be sure to maintain clear, signed, and dated copies.
NOTE:
Some hydrogen gas may be liberated at equalize voltage.