EnerSys PowerSafe SBS - Ventilation and Hydrogen Evolution; Hydrogen Evolution Rates per Battery Model; Operation and Charging Procedures; Recommended Float Voltage and Compensation

3. Ventilation
The battery compartment/room must have adequate ventilation to limit
hydrogen accumulation to a maximum of 1% by volume. The following shows
Hydrogen Evolution.
4. Installation
Install the batteries in accordance with instructions below:
1. Refer to layout drawing at the end of this manual.
2. Position batteries into the location required by the application. Do not handle
the batteries by terminals as this can damage terminal seals.
3. Ensure the battery terminals, interconnect straps and cable lugs are clean
and free of electrolyte corrosion. If the environment is corrosive, a light
coating of NO-OX can be applied to the battery terminals prior to installing
the connectors on to the terminals. Install connectors to battery terminals
with the specified torque.
4. Recheck the torque on the installed connectors to ensure secure
connections.
AMER-EN-IOM-PS-SBS-0622 3
5. Operation
Constant voltage chargers are recommended. The acceptable float voltage
range is 2.27-2.29Vpc at 68ºF (20ºC) and 2.25-2.27Vpc at 77ºF (25ºC).
The temperature compensated voltage should not go below 2.21Vpc.
The recommended float voltage temperature compensation is:
The float voltage must be applied as soon as possible after termination of the
discharge, and not later than seven days after any discharge.
Includes the following:
SBS B8, SBS B10, SBS B14, SBS C11, SBS 145, SBS 165F, SBS 170F, SBS
190F, SBS 100, SBS 100F and SBS 112F
Do not discharge the battery beyond the voltage cut-off limit for the given
discharge rates:
1.80Vpc @ 10 hr rate 1.75Vpc @ 8 hr rate
1.75Vpc @ 5 hr rate 1.70Vpc @ 3 hr rate
1.60Vpc @ 1 hr rate 1.60Vpc @ 15 min rate
Discharging to voltages below these values can result in irrecoverable
capacity loss and premature end of life. The float voltage must be applied
to the battery as soon as possible, and no later than seven days after any
discharge. If it is not, contact EnerSys
®
for more information.
6. Maintenance
In practice the user usually specifies the maintenance schedule based on site
criticality, location, and manpower.
The following is a suggested maintenance schedule.
Every Six Months (Record All Readings)
Measure the battery string voltage, temperature, float current, inter-module
resistances and internal ohmic values. If necessary, adjust the float voltage to
the correct value. Measure individual module voltages.
The individual module voltages must be within ± 0.30V of the nominal float
voltage. Inspect for contamination of dust and loose or corroded connections.
Corrosion can be caused by environmental factors and/or battery electrolyte.
Batteries and interconnect straps with electrolyte corrosion should be
replaced. Corrosion due to electrolyte typically originates at the base of the
battery terminal with a wet appearance and propagates outward while being
localized to the terminal(s). Light corrosion that is dry in appearance and
relatively uniform across all connections may be environmental corrosion.
Batteries with light environmental corrosion do not need to be replaced
if connection surfaces were protected from corrosion with NO-OX. If
environmental corrosion is suspected, clean with a water dampened clean
cloth and cover metal conductors with NO-OX. Do not use solvents or
scouring powders to clean the modules.
The recommended practice is to replace the battery if its capacity is below
80% of the manufacturer’s rating.
PowerSafe
®
SBS Battery Fastener Size Torque in lb/Nm
SBS 8
M4 9 / 1.0
SBS 15 - 60
M6 35 / 3.9
SBS 110 - 390
M8 44 / 5.0
SBS J13 - J16
M6 50 /5.6
SBS J30 - J70
M6 60 / 6.8
SBS B8 - B14(F)
M6 44 / 5.0
SBS B8 - B14
M8 44 / 5.0
SBS C11(F)
M8 44 / 5.0
SBS C11
M6 44 / 5.0
SBS 145
M8 44 / 5.0
SBS C11
M6 44 / 5.0
SBS 145F
M6 44 / 5.0
SBS 165F
M6 44 / 5.0
SBS 170F - 190F
M6 80 / 9.0
SBS 100
M8 44 / 5.0
SBS 100F
M6 44 / 5.0
SBS 112F
M6 44 / 5.0
Temperature ºF / ºC
50/10 59/15 68/20 77/25 86/30 95/35 104/40
Recommended
2.33 2.31 2.29 2.27 2.25 2.23 2.21 Vpc
Minimum
2.31 2.29 2.27 2.25 2.23 2.21 2.21 Vpc
Hydrogen Evolution per bloc
PowerSafe
®
SBS Battery Cells per bloc Float Charge 2.27 Vpc
ml/hr
SBS 8
6 0.27
SBS 15
6 0.53
SBS 30
6 0.99
SBS HB30
6 0.99
SBS 40
6 1.45
SBS 60
6 1.94
SBS 110
3 2.21
SBS 130
3 2.53
SBS 300
3 5.84
SBS 390
3 6.86
SBS J13
6 0.46
SBS J16
6 0.57
SBS J30
6 0.99
SBS J40
6 1.48
SBS J70
6 2.43
SBS B8
6 1.18
SBS B10
6 1.45
SBS B14
6 2.36
SBS C11
6 3.46
SBS 100
6 3.80
SBS 145
6 5.51
SBS B8F
6 1.18
SBS B10F
6 1.45
SBS B14F
6 2.36
SBS C11F
6 3.46
SBS 100F
6 3.80
SBS 112F
6 4.26
SBS 145F
6 5.51
SBS 165F
6 6.28
SBS 170F
6 6.47
SBS 190F
6 7.23
Values double for every 18ºF (10ºC) above 77ºF (25ºC) and half for every 18ºF (10ºC) below
below 77ºF (25ºC).
Contact EnerSys
®
for product not listed.