5.1 Type L
The SBL is designed for applications
where the battery is required to
provide a reliable source of energy
over relatively long discharge
periods. Normally, the current is
relatively low in comparison with the
total stored energy, and the
discharges are generally infrequent.
Typical uses are power backup and
bulk energy storage.
5.2 Type M
The SBM is designed for applications
where the batteries are usually
required to sustain electrical loads for
between 30 minutes to 3 hours or for
“mixed” loads which involve a
mixture of high and low discharge
rates. The applications can have
frequent or infrequent discharges.
The range is typically used in power
backup applications.
5.3 Type H
The SBH is designed for applications
where there is a demand for a
relatively high current over short
periods, usually less than 30 minutes
in duration. The applications can
have frequent or infrequent
discharges. The range is typically
used in starting and power backup
applications.
5.4 Choice of type
In performance terms the ranges
cover the full time spectrum from
rapid high current discharges of a
second to very long low current
discharges of many hours. Table 2
shows in general terms the split
between the ranges for the different
discharge types. The choice is related
to the discharge time and the end of
discharge voltage. There are, of
course, many applications where
there are multiple discharges, and so
the optimum range type should be
calculated. This is explained in the
chapter “Battery Sizing”.
10 11
5. Battery types and applications
In order to provide an optimum solution for the wide range of battery applications
which exist, the block battery is constructed in three performance ranges.
Saft Battery
types
SBL SBM SBH
Autonomy
mini 1 h 15 min 1 s
maxi 100 h 2 h 30 min
Capacity mini 7.5 11 8.3
range maxi 1540 1390 920
Power Power Starting,
backup backup Power
Use of battery
Bulk energy backup
storage
Applications Engine starting - Switchgear - UPS - Process control -
Data and information systems - Emergency lighting -
Security and fire alarm systems -
Switching and transmission systems - Signalling
Railways
intercity and
▼ ▼ ▼
urban transport
Stationary
Utilities
electricity, gas,
water production
▼ ▼ ▼
and distribution
Oil and gas
offshore & onshore,
petrochemical
▼ ▼ ▼
refineries
Industry
chemical, mining,
▼ ▼ ▼
steel metal works
Buildings
public, private
▼ ▼ ▼
Medical
hospitals,
▼ ▼ ▼
X-ray equipment
Telecom
radio,
satellite, cable,
▼ ▼
repeater stations,
cellular base stations
Railroad
substations
▼ ▼ ▼
& signalling
Airports ▼ ▼ ▼
Military
all applications
▼ ▼ ▼
Table 2 - General selection of cell range
10 min 15 min 30 min 60 min 2 h 3 h 5 h 8 h
1.14 V
1.10 V
1.05 V
1.00 V
H
M
L
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