EnerSys PowerSafe SBS B14 User manual

OPERATION GUIDE
FOR HYBRID
APPLICATIONS
RESERVE
POWER

1. General Operating Instructions
1.1 Operating Temperature Range
The recommended operating temperature range for PowerSafe®SBS
EON Technology™ batteries in hybrid applications is -40°C to +50°C.
Optimum life and performance are attained at +20°C, however, with
the correct controls in place, cyclic performance in hybrid
applications is not impacted by elevated temperatures (providing that
the maximum battery temperature is not allowed to exceed +50°C).
1.2 Storage
PowerSafe SBS EON Technology battery types have a shelf life of 2
years when stored at 20°C. Higher temperatures increase the rate of
self discharge and reduce storage life.
Figure 1 gives the relationship between storage time, open circuit
voltage (OCV) and state of charge as a function of temperature.
1.3 Freshening Charge
PowerSafe SBS EON Technology battery types must be given a
freshing charge when the OCV approaches 2.10 Volts/cell or when
maximum storage time is reached (whichever occurs first).
The freshening charge should be conducted using constant voltage in
the range of 2.29 to 2.40 volts per cell for a period of 24 hours. The
charge current should be limited to a value expressed numerically in
Amps as 10% of the 10 hour capacity rating of the battery (ie. 19
Amps for SBS 190F).
The maximum storage times between refresh charge and
recommended OCV audit frequency is given in the table below.
Temperature Storage Time OCV Audit Interval
(°C / °F) (Months) (Months)
+10 / +50 48 6
+15 / +59 34 6
+20 / +68 24 4
+25 / +77 17 4
+30 / +86 12 3
+35 / +95 8.5 2
+40 / +104 6 2
1.4 Commissioning
Prior to commencement of cyclic duty, the battery must be given a
commissioning charge. This shall consist of 24 hours charge at a
voltage equivalent to 2.40 Volts/cell with no load connected.
1.5 Fast Charging
Fast charge techniques must be used for frequent discharge cyclic
applications. In such applications the rectifier output voltage should
be set at 2.40 Volts/cell (20°C).
1.6 Current Limit
Inherent low internal resistance allows PowerSafe SBS EON
Technology battery types to accept in-rush currents up to 600% C10
amps (e.g. PowerSafe SBS 190F in-rush current up to 1140 Amps).
For reliable cyclic performance and to achieve maximum cycle life
potential, the acceptable recharge current limit range is 0.1 to 1C10
Amps (e.g. for PowerSafe SBS 190F the recharge current range is
19 Amps to 190 Amps per series string).
1.7 Disposal
PowerSafe SBS EON Technology batteries are recyclable. End of life
batteries must be packaged and transported according to prevailing
transportation rules and regulations. End of life batteries must be
disposed of in compliance with local and national laws by a licensed
battery recycler.
2. Cyclic Operation Guidelines
2.1 Cyclic Performance
PowerSafe SBS EON Technology has been developed from proven
SBS Thin Plate Pure Lead (TPPL) technology, to provide the added
capability of delivering higher levels of cyclic performance as
illustrated in figure 2.
In order to achieve the cycle life shown in figure 2 PowerSafe SBS
EON Technology batteries must be returned to full state of charge
using the charge regime options recommended by EnerSys®prior to
commencement of the next discharge cycle. Operating at partial state
of charge will significantly reduce cycle life.
2.2 Discharge
Depth of discharge must be measured using an Ah counting device,
with an accuracy ±1% of full range of expected discharge cycle
currents. The classification of the shunt should be minimum of 0.2.
A low voltage disconnect should be used to protect the battery from
abusive deep discharge (typically 1.75 Volts/cell).
2.3 Recharge
Optimum cycle life (figure 2) is achieved by controlling the amount of
recharge back into the battery to a level where 103% of discharged
Ah is returned. Controlled recharge can be achieved by Ah counting
using a device capable of measuring float current equivalent to
100mA/100Ah of installed battery capacity.
Alternatively, where Ah counting during recharge is not available, it is
possible to calculate the required recharge time based upon the
following formula.
Recharge time (hrs) =
((discharged Ah*0.8) / recharge current limit)*2+1
Example
PowerSafe SBS 190F discharge to 80% depth of discharge removes
152Ah. With a current limit of 0.5C10 A (95 Amps), the time to
recharge the battery is:
Time (hrs) = ((152*0.8) / 95)*2+1
= (121.6/95)*2+1
= 1.28*2+1
= 2.56+1
= 3.56hrs
Indication of time to full state of charge using the above formula for
various depths of discharge and current limits is shown in figure 3.
2.17
2.16
2.15
2.14
2.13
2.12
2.11
2.10
100
96
91
87
83
79
74
70
Open Circuit Voltage per Cell
Approx. State of Charge (%)
Months
0612182430364248
+40°C +30°C +25°C +20°C +10°C
Figure 1
Time (hrs)
Depth of Discharge
18
16
14
12
10
8
6
4
2
0
0% 10% 20% 30% 40% 50% 60% 70% 80% 90% 100% 110%
0.1C10 Amps
0.2C10 Amps
0.3C10 Amps
0.5C10 Amps
1C10 Amps
0.1C10A
0.2C10A
0.3C10A
0.5C10A
1.0C10A
Time to Full State of Charge
As a Function of Current Limit and Depth of Discharge
(Recharge 2.40Vpc)
Figure 3
Figure 2
PowerSafe®SBS EON Technology™
Cycle Life as a Function of Depth of Discharge (C10 Rate)
(Charge Using Optimum EON Technology Recommendations)

The time to reach full state of charge is influenced by battery
temperature and charge voltage during the recharge.
1) Where Ah counting is used to control the recharge (i.e.103% of
discharged Ah is returned) the battery voltage can be maintained
at a constant 2.40 Volts/cell provided that the battery temperature
is controlled at or below +50°C discharged Ah returned.
2) Where time formula recharge is used, temperature compensation
for charge voltage should be applied at the rates shown in figure 4.
Where rectifier voltage cannot be adjusted to values >2.40 Volts/cell
to compensate for temperatures below 20°C, the time to full state of
charge will be increased. For additional information and guidance on
this, please contact your EnerSys®representative.
At the end of controlled recharge the battery can revert to either
discharge mode, or where the battery is used to provide mains
back up the voltage should be reduced to float voltage level of
2.29 Volts/cell.
2.4 Data Recording
In order for the warranty to be valid, the user must provide, by means
of routine regular data logging, the following data:
1) The number of cycles performed and the depth of discharge
(“dod”) of each cycle.
2) The duration of each discharge and charge cycle, and the Ah in
and out.
3) Full details of the recharge voltage/current profile for the last 50
cycles.
4) A full history of the ambient and battery surface temperatures,
recorded at regular intervals throughout battery operation and life.
5) The time and date of each “event” (an “event” is defined as the
start /stop of the battery discharge, the start/stop of the battery
recharge, the start stop of any generator input power or other input
power source, etc).
Warning
In hybrid applications it is important that the maximum
temperature of the battery in operation does not exceed +50°C.
Continuous charge at 2.40volts/cell will significantly reduce the
battery life.
2.53
2.51
2.49
2.47
2.45
2.43
2.41
2.39
2.37
2.35
2.33
2.31
2.29
2.27
2.25
10 15 20 25 30 35 40 45 50
Volts Per Cell
Temperature (°C)
Fast Charge Temperature Correction
Figure 4
3. General Specifications
PowerSafe®SBS
Battery
Type Connector
Part No.
SBS B14, C11 2205-8919
SBS B14F, C11F 2205-8891
SBS 100 2205-8750
SBS 100F 2205-8749
SBS 170F & 190F 2205-8769
SBS 410 2205-9887 (A)
SBS 410 2205-8865 (B)
BA
SBS B14, C11, 100 SBS B14F, C11F, 100F,
170F, 190F
SBS 410
4. Connectors
SBS B14 12 62 62 280 11.0 97 3.8 264 10.4 19.1 42.0 1800 7.0 M8 F
SBS B14F 12 62 62 303 11.9 97 3.8 264 10.4 19.1 42.0 1800 7.0 M6 M
SBS C11 12 92 91 395 15.6 105 4.1 264 10.4 28.0 61.6 2300 5.5 M8 F
SBS C11F 12 92 91 417 16.4 105 4.1 256 10.1 28.0 61.6 2300 5.5 M6 M
SBS 100 12 100 100 395 15.6 108 4.3 287 11.3 32.6 71.9 2210 5.6 M8 F
SBS 100F 12 100 100 395 15.6 108 4.3 287 11.3 32.6 71.9 2210 5.6 M6 M
SBS 170F 12 170 170 561 22.1 125 4.9 283 11.1 52.5 115.7 3400 4.0 M6 M
SBS 190F 12 190 190 561 22.1 125 4.9 316 12.4 60.0 132.3 3800 3.3 M6 M
SBS 410 2 410 410 200 7.9 208 8.2 239 9.4 23.2 51.1 4725 1.3 M8 M
Nominal Capacity (Ah) Nominal Dimensions
PowerSafe®SBS 10 hr rate 8 hr rate Typical Internal
Battery Nominal to 1.80Vpc to 1.75Vpc Length Width Height Weight Short Circuit Resistance Terminals
Type Voltage (V) @ 20°C @ 77°F mm in mm in mm in kg lbs Current (A) (mΩ)

Publication No: EN-SBS-EON-OGH-002 - September 2009 - Subject to revisions without prior notice. E.&O.E.
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