UPG Data Sheet

Absorbant Glass Mat (AGM) technology for superior performance. Valve regulated, spill proof construction allows safe operation
in any position. Approved for transport by air. D.O.T., I.A.T.A., F.A.A. and C.A.B. certied. U.L. recognized under le number
MH 20567.
Sealed Lead-Acid Battery
Nominal Voltage
Nominal Capacity
20-hr. (2.75A)
10-hr. (5.12A)
5-hr. (9.35A)
1-hr. (33.0A)
Approximate Weight
Internal Resistance (approx.)
Shelf Life (% of normal capacity at 68º F (20º C)
3 Months 6 Months 12 Months
12 volts
55.0 Ah
16.5 A or smaller
14.6 - 14.8 V
77º F (25º C)
51.2 Ah
46.8 Ah
33.0 Ah
35.5 lbs (16.1 kgs)
10m1
91% 83% 64%
Charge Method (Constant Voltage)
Cycle Use
Float Use
Initial Current
Control Voltage
13.6 - 13.8 V
Control Voltage
(Repeating Use)
Specification
Physical Dimensions: in (mm)
Terminals
5MIN 10MIN 15MIN 30MIN 1HR 2HR 3HR 4HR 5HR 8HR 10HR 20HRF.V/Time
182.8 133.4 93.9 56.8 29.6 17.3 12.7 9.9 8.2 5.7 5.2 2.89.60V
161.0 121.5 84.0 53.8 27.9 16.5 12.4 9.6 8.0 5.6 5.0 2.710.20V
155.1 115.6 79.0 52.4 27.2 16.1 12.1 9.5 7.9 5.6 4.9 2.710.50V
149.2 109.7 74.1 50.9 26.2 15.7 11.8 9.3 7.7 5.4 4.9 2.710.80V
143.3 103.7 69.2 49.4 25.2 15.3 11.4 9.0 7.5 5.3 4.7 2.511.10V
Constant Current Discharge Characteristics Unit:A (25°C, 77°F)
5MIN 10MIN 15MIN 30MIN 1HR 2HR 3HR 4HR 5HR 8HR 10HR 20HRF.V/Time
1940.9 1465.7 996.9 603.2 343.3 200.1 147.2 114.6 94.4 66.7 60.3 32.59.60V
1787.8 1349.1 932.2 597.7 322.6 191.2 143.3 111.6 94.1 65.2 58.8 31.610.20V
1759.1 1311.1 896.1 593.8 312.2 186.7 139.8 109.7 91.4 64.7 57.8 31.210.50V
1736.4 1276.5 862.5 592.3 303.8 182.8 136.8 107.7 89.9 63.2 57.3 31.110.80V
1704.8 1234.5 823.0 587.9 299.9 182.3 135.4 107.2 89.4 62.7 55.8 30.111.10V
Constant Power Discharge Characteristics Unit:W (25°C, 77°F)
UPG No. 40740
Maintenance-Free
UB12550
w
w
13.3 mm
0.52 in
L: 9.06in (230 mm)
W: 5.44in (138 mm)
H: 8.27in (210 mm)
TH: 9.13in (232 mm)
Tolerances are +/- 0.04 in. (+/- 1mm)
and +/- 0.08 in. (+/- 2mm) for height
dimensions. All data subject to
change without notice.
9.06 (230)
8.27 (210)
5.44 (138)
9.13 (232)
Temperature Dependency of Capacity
104 F (40 C) 77 F (25 C)
(20 hour rate)
102% 100% 85%
32 F (0 C) 5 F (-15 C)
65%
AGM Operational Temperature
AGM Storage Temperature
(0 C to 40 C)32 F to 104 F
5 F to 113 F
5 F to 104 F
(-15 C to 45 C)
Charge
Discharge
(-15 C to 40 C)
488 S. Royal Lane Coppell, Texas 75019 P 469.892.1122 T 866.892.1122 F 469.892.1123 [e-mail]
www.upgi.com
All specifications subject to change without notice.
J2031-1
Copyright 2020 Universal Power Group, Inc. All rights reserved.
Due to continuous improvements to our products, product may vary slightly from depiction.