C&D Technologies RS-990 Liberty Series 1000 - Manual (Page 11)

Model LS 12-25* LS 6-50* LS 12-55 LS 12-80
Nominal voltage 12 Volts 6 Volts 12 Volts 12 Volts
Number of cells in 6/unit 3/unit 6/unit 6/unit
module
Rated 8 hr. 25 Ah 50 Ah 52 Ah 80 Ah
Capacity (Ampere- to to to to
hours to 1.75 Vpc) 10.50 Volts 5.25 Volts 10.50 Volts 10.50 Volts
Rated 15-min. capacity 0.092 0.185 0.172 0.275
(kiloWatts to 1.67 Vpc)
Internal resistance/cell 0.0017 Ohms 0.0008 Ohms 0.00157 Ohms 0.00094 Ohms
Short circuit current 1155 A 2310 A 1274 A 2128 A
Unit height 7.11 in 7.11 in 9.20 in 9.20 in
(181 mm) (181 mm) (234 mm) (234 mm)
Unit length 7.64 in 7.64 in 10.20 in 13.94 in
(includes handles) (194 mm) (194 mm) (234 mm) (354 mm)
Unit width 5.20 in 5.20 in 6.80 in 6.80 in
(132 mm) (132 mm) (173 mm) (173 mm)
Weight 23 lbs 23 lbs 56 lbs 79 lbs
(10 kg) (10 kg) (25 kg) (36 kg)
Terminal 0.55 in (14 mm) 0.55 in (14 mm) 0.55 in (14 mm) 1.00 in (25 mm)
Characteristics diameter threaded diameter threaded diameter threaded diameter threaded
brass insert, 0.50 brass insert, 0.50 brass insert, 0.50 brass insert, 0.75
in (13 mm) deep. in (13 mm) deep. in (13 mm) deep. in (19 mm) deep.
Fasten with 10-32 Fasten with 10-32 Fasten with 10-32 Fasten with 1/4-20
stainless steel stainless steel stainless steel stainless steel
hex bolt/washer hex bolt/washer hex bolt/washer hex bolt/washer
Tightening torque 45 in-lbs (5.1 N*m) 45 in-lbs (5.1 N*m) 45 in-lbs (5.1 N*m) 110 in-lbs (12.4 N*m)
Re-torque 40 in-lbs (4.5 N*m) 40 in-lbs (4.5 N*m) 40 in-lbs (4.5 N*m) 100 in-lbs (11.3 N*m)
Boost charge voltage 2.33 +/-.02 Vpc 2.33 +/-.02 Vpc 2.33 +/-.02 Vpc 2.33 +/-.02 Vpc
Nominal float voltage 2.26 +/-.01 Vpc 2.26 +/-.01 Vpc 2.26 +/-.01 Vpc 2.26 +/-.01 Vpc
Electrolyte at 77°F 1.300 Specific 1.300 Specific 1.300 Specific 1.300 Specific
(25°C) nominal value Gravity Gravity Gravity Gravity
*These units have been discontinued
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TABLE 2 - BATTERY SPECIFICATIONS
(Characteristics subject to change without notice. Refer to current specifications 12-373)