long duration batteries

Product Information

TEL Series Long Duration batteries are designed to provide standby power to critical applications in the Telecom industry.

The TEL series long duration batteries have undergone extensive life cycle testing, including SR4228 compliance, to ensure the longest and most reliable service life possible.

With a range of capacities from 30 to 125 ampere hours and many installation options including relay racks, cabinets and more, the TEL Long Duration series is suited to a variety of applications within the Telecommunications industry.

Features and Options
  • Long service life as proven by Telcordia SR4228 testing and compliance
  • Low Profile terminals with threaded copper alloy inserts reduce height and maintenance while increasing safety and performance
  • Non-Spillable Design provides non-restricted transportation options
  • AGM Technology provides over 99% gas recombination efficiency
  • Flame Retardant case and cover complies with UL94 V-0
  • UL Recognized component
  • SLC wiring harnesses available for many TEL models
Nominal voltageSee Model Table
Number of cellsSee Model Table
Rated 8-hr to capacity (ampere-hours to 1.75 VPC)See Model Table
Recommended Maximum Charging Current LimitC/5 amperes @ 20 Hr rate @ 77°F (25°C)
Float Charging Voltage13.5 to 13.8 average per 12V unit (6.75 to 6.90 per 6V unit) @ 77˚F (25˚C)
Maximum AC Ripple (Charger)AC Ripple Voltage - 0.5% RMS or 1.5% P-P of charge voltage recommended for best results.
AC Ripple Current - Max current allowed = C/20 AMPS RMS (5 AMPS RMS Per 100Ah).
Equalize charge and cycle
service voltage
14.40 to 14.80VDC average per 12V unit @ 77˚F (25˚C); 7.20 to 7.40VDC per 6V unit
Operating Temperature Range with Temperature compensationDischarge: -40˚F (-4 0˚C) to +160˚F (71˚C)
Charge: -10˚F (-2 3˚C) to +140˚F (60˚C)
Nominal Operation Temperature Range+74˚F (23˚C) to +80˚F (27˚C)
Self DischargeBattery can be stored up to 6 months at 77°F (25°C) before a freshening charge is required. Batteries
stored at temperatures greater than 77°F (25°C) will require recharge sooner than batteries stored at
lower temperatures. See C&D bulletin 41-7272, Self-Discharge and Inventory Control for details.
Dimensions, inches (mm)TEL12-30: 7.77 (197.4) L x 5.19 (131.9) W x 6.80 (172.7) H
TEL12-45: 8.99 (228.3) L x 5.48 (139.2) W x 8.07 (205.1) H
TEL12-70: 10.26 (260.5) L x 6.83 (173.4) W x 8.01 (203.5) H
TEL12-80: 12.51 (317.8) L x 6.83 (173.4) W x 8.06 (204.8) H
TEL12-90: 13.42 (340.9) L x 6.80 (172.7) W x 8.52 (216.4) H
TEL12-105FS: 21.95 (557.5) L x 4.94 (125.5) W x 8.06 (204.8) H
TEL12-125: 13.57 (344.7) L x 6.80 (172.7) W x 10.93 (277.7) H
TEL6-180: 12.63 (320.8) L x 6.97 (177.0) W x 8.94 (227.2) H
WeightTEL12-30: 27.3lbs / 12.4kg
TEL12-45: 40.6lbs / 18.4kg
TEL12-70: 55.8lbs / 25.3kg
TEL12-80: 66.6lbs / 30.2kg
TEL12-90: 74.5lbs / 33.8kg
TEL12-105FS: 84.9lbs / 38.5kg
TEL12-125: 102.3lbs / 46.4kg
TEL6-180: 74.5lbs / 33.8kg
Terminal Inserted

Threaded copper alloy insert terminal to accept:
10-32 UNF 3⁄8 inch long screws for: TEL12-30, TEL12-30SLC, TEL12-45 & TEL12-45SLC.
1/4-20 UNC 3⁄4 inch long screws for: TEL12-70, TEL12-80, TEL12-80SLC, TEL12-90, TEL12-105FS, TEL12-125 & TEL6-180.

Inserted Copper Alloy Terminal Hardware Initial Torque30 in.-lbs. (3.4 N-m) for 10-32 hardware.
110 in.-lbs. (12.4 N-m) for 1⁄4-20 hardware.
Inter-unit ConnectorIncluded with the TEL12-105FS
Terminal ProtectorsUL94V0 Terminal protectors available
See datasheet for more detailed specification including discharge tables.
Model NumberNominal Voltage# of Cells8 Hour Capacity
TEL12-3012V6 / unit30.4Ah to 10.5V
TEL12-4512V6 / unit45.5Ah to 10.5V
TEL12-7012V6 / unit69.1Ah to 10.5V
TEL12-8012V6 / unit79.0Ah to 10.5V
TEL12-9012V6 / unit87.6Ah to 10.5V
TEL12-105FS12V6 / unit100.0Ah to 10.5V
TEL12-12512V6 / unit126.0Ah to 10.5V
TEL6-1806V3 / unit175.5Ah to 5.25V

NOTE: TEL12-105FS replaces TEL12-105F. TEL 12-105FS is 0.56 inches (14.33 mm) shorter than the TEL12-105F.