Outback EnergyCell RE High Capacity Manual

16
www.enersys.com
Publication No. US-VR-OM-002
March 2008
7.0 INITIAL and/or FRESHENING CHARGE
Batteries lose some initial charge during shipment and storage. Depending on storage time,
a battery may require a
freshening charge. See Section 4.0 for battery storage times.
Constant voltage is the ONLY charging method allowed. Confirm that your charger bus is a
constant voltage type. (Most modern chargers are the constant voltage type.)
1. Determine the maximum voltage that may be applied to the system equipment (or
maximum charger voltage if load is not yet connected). Refer to the recommendations
of the manufacturer/supplier of system equipment, connected to DC bus.
2. Divide the maximum total system voltage by the number of cells (not units) connected
in series. This is the maximum volts per cell that may be used for the initial charge.
Do NOT exceed 2.35 volts per cell.
Table 7.1 lists recommended initial charge voltages per cell and charge time for the initial
charge. Select the HIGHEST voltage the system allows for the initial charge without
exceeding 2.35 volts per cell.
TABLE 7.1
CELL VOLTS
Initial Charge
2.27 60 120 240
2.30 48 96 192
2.32
24 48 96
2.35 12 24 48
TIME (Hours)
Temp. 60˚-90˚F
(16˚-32˚C)
TIME (Hours)
Temp. 40˚-59˚F
(5˚-15˚C)
TIME (Hours)
Temp. < 39˚F
(<4˚C)
3. Connect battery positive (+) terminal to charger bus positive (+) terminal.
4. Connect batter
y negative (-) ter
minal to char
ger bus negative (-) ter
minal.
5. Raise the voltage to the maximum value permitted by the equipment as shown in
T
able 7.1. Do NOT exceed 2.35 volts under any conditions.
6. When charging current has decreased and stabilized (i.e., no further reduction for three
hours), charge for the hours shown in Table 7.1, or until the lowest cell voltage ceases
to rise.
Monitor the battery temperature during the char
ge. If the cell/batter
y
temperature exceeds 105˚F (40˚C) stop the charge immediately and allow
the temperature to decrease below 90˚F (32˚C). Failure to follow this
war
ning may r
esult in sever
e overcharge and damage to the cell/battery.
CAUTION