Sealed Long Life
Rechargeable Battery
PG-12V42-FR
@ 20-hr. rate to 10.8V
12 Volt 45 A.H.
@ 10-hr. rate to 10.8V
42 A.H.
(UL94 V-O flame retardant)
Power-Sonic Corporation
B
A
T
T
E
R
Y
M
U
S
T
B
E
R
E
C
Y
C
L
E
D
Pb
NONSPILLABLE
www.power-sonic.com
MH20845
®
L
HT
W
H
16mm
6mm
M6
Tolerances are +/- 0.04 in. (+/- 1mm) and +/- 0.08 in. (+/- 2mm) for
height dimensions. All data subject to change without notice.
Physical Dimensions: in (mm)
Features
Long Service Life - Thick plate design and ef cient gas
recombination yield a service life expectancy of up to 10 years in
standby mode.
Low Internal Resistance - Superb high-rate discharge
characteristics ensure reliable performance in UPS and Telecom
applications.
Maintenance-Free, Non-Spillable - Proven VRLA technology
guarantees safe operation without maintenance and ‘non-
restricted article’ status for transportation.
Low Self-Discharge - Lead-calcium alloy grids and use of high
purity lead account for superior shelf-life characteristics permitting
storage for extended periods of time.
Designed-In Reliability - Cutting-edge manufacturing and
process control combined with meticulous quality assurance
procedures guarantee consistent and dependable performance.
Performance Speci cations
Nominal Voltage ........................................................................ 12 volts (6 cells)
Nominal Capacity
20-hr. (2.25A to 10.80 volts) .......................................................... 45.0 AH
10-hr. (4.2A to 10.80 volts) ............................................................ 42.0 AH
8-hr. (5.2A to 10.50 volts) ...............................................................41.6 AH
5-hr. (7.20A to 10.50 volts) .......................................................... 36.0 AH
3-hr. (10.90A to 10.50 volts) ......................................................... 32.7 AH
1-hr. (25.2A to 9.60 volts) ............................................................ 25.2 AH
Approximate Weight .............................................................. 32 lbs. (14.5 kg)
Energy Density (10-hr. rate) .................................. 1.49 W-h/in3 (91.14 W-h/l)
Specifi c Energy (10-hr. rate) ............................. 15.75 W-h/lb (34.72 W-h/kg)
Internal Resistance (approx.) ..................................................... 8.0 milliohms
Max Short-Duration Discharge Current (10 Sec.) ................... 263 amperes
Shelf Life (% of nominal capacity at 68°F (20°C))
1 Month ...................................................................................................... 97%
3 Months ..................................................................................................... 91%
6 Months .................................................................................................... 83%
Operating Temperature Range
Charge .. ........................................................... -4°F (-20°C) to 122°F (50°C)
Discharge ....................................................... -40°F (-40°C) to 140°F (60°C)
Case ........................................................ ABS Plastic (UL94 V-O  ame retardant)
Power-Sonic Chargers ............................................PSC-124000A, 124000A-C
www.power-sonic.com
To ensure safe and effi cient operation always refer to the latest edition of our Technical Manual, as published on our website.
All data subject to change without notice.
Terminals (mm)
T6: Threaded insert w.
6 mm stud fastener
L: 7.76 (197) W: 6.50 (165) H: 6.69 (170) HT: 6.14 (156)
PG-12V42 FR 12 Volt 45 AH@ 20-hr. rate 
42 AH@ 10-hr. rate 
Charging
Cycle Applications: Limit initial current to 12.6A. Charge until battery voltage
(under charge) reaches 14.4 to 14.7 volts at 68°F (20°C). Hold at 14.4 to 14.7
volts until current drops to under 420mA. Battery is fully charged under these
conditions, and charger should be disconnected or switched to “oat” voltage.
“Float” or “Stand-By” Service: Hold battery across constant voltage source of
13.5 to 13.8 volts continuously. When held at this voltage, the battery will seek its
own current level and maintain itself in a fully charged condition.
Note: Due to the self-discharge characteristics of this type of battery, it is
imperative that they be charged within 6 months of storage, otherwise permanent
loss of capacity might occur as a result of sulfation.
Chargers
Power-Sonic offers a wide range of chargers suitable for batteries up to 100AH.
Please refer to the Charger Selection Guide in our specication sheets for “C-Series
Switch Mode Chargers” and “Transformer Type A and F Series”. Please contact our
Technical department for advice if you have difculty in locating suitable models.
®
Further Information
Please refer to our website www.power-sonic.com for a complete range of useful
downloads, such as product catalogs, material safety data sheets (MSDS), ISO
certication, etc..
Constant Current & Power Discharge Ratings
MODEL FINAL
VOLTAGE
AMPS/WATTS PER CELL @ 25° C
5 MIN 10 MIN 15 MIN 20 MIN 30 MIN 45 MIN 60 MIN
A W A W A W A W A W A W A W
PG-12V42 FR
1.80 86 162 74 142 64 125 56.5 112 46 93 33.2 67 27 54
1.75 99 186 80 150 70 134 62.5 122 49 98 36 73 27 55
1.67 113 194 92.5 168 81.2 150 67 129 152 100 36.2 75 25.2 56
1.60 139 210 97 176 84 155 68.9 132 48.6 116 33.6 77 25 57
10
9
8
7
6
5
4
3
2
60
40
30
20
10
8
6
4
0.5 1 2 3 4 6 7 8 13 26 42 90 140 2800
40°C (104°F)
25°C ( 77°F)
0°C ( 32°F)
(min)(h)
50
3 5 10 20 30 60 2 3 5 10 20
(min) (h)
45A 25.2A
10.9A 7.2A 4.2A 2.25A
90A
135A
13
12
11
10.8
9.6
9
7.6
0
10
10.5
Ambient Temperature: 25°C(77°F)
Capacity Retention Ratio (%)
Standing Period (Months)
100
80
60
40
0
0 2 4 6 8 10 12 14 16 18 20
40oC
(104oF)
30oC
(86oF)
20oC
(68oF)
5oC
(41oF)
Charging is not
necessary unless
100% of capacity
is required.
Charging before
use is necessary
to help recover
full capacity.
Charge may fail
to restore full
capacity. Do not
let batteries reach
this state.
Discharge CharacteristicsDischarge Time vs. Discharge Current
Shelf Life & Storage
Discharge Current (A)
Discharge Time
Discharge Time
Terminal Voltage (V)
PG-12V42 FR 12 Volt  45 AH @ 20-hr. rate, 42 AH @ 10-hr. rate
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CUSTOMER SERVICE
Tel: +1-619-661-2030
Fax: +1-619-661-3648
customer-service@power-sonic.com
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Fax: +1-650-366-3662
international-sales@power-sonic.com
DOMESTIC SALES
Tel: +1-619-661-2020
Fax: +1-619-661-3650
national-sales@power-sonic.com
TECHNICAL SUPPORT
Tel: +1-619-661-2020
Fax: +1-619-661-3648
support@power-sonic.com
Contact Information www.power-sonic.com
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