Enersys NSB 125TT HT RED Battery

Manufacturer Part Number: NSB 125TT HT RED

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Enersys NSB 125TT HT RED Battery
Pure Lead – High Temp

NorthStar Enersys NSB 125TT HT RED delivers long life in unreliable grid conditions even at high temperatures.

The NSB 125TT HT RED Battery® provides exceptional performance and long float life, even at elevated temperatures. This means huge potential cost savings, due to reduced battery replacement, cooling and maintenance. Conventional lead acid batteries use lead alloys with additives which increase the strength so they can withstand handling during the battery making process. The downside of using these alloys and additives is that the batteries suffer from faster corrosion and component aging. The NorthStar Enersys advanced manufacturing process eliminates the need for alloys and additives. Their AGM thin plate pure lead technology delivers larger and thinner plates, which means more surface area for active material reactions, which increases power density.


  • Pure lead electrochemistry greatly increases temp and corrosion resistance while reducing component aging
  • Thin plates deliver large surface area high power density and low resistance
  • Design life 15+ years at 20°C (68°F)
  • Extra long life at high temp operation 40°C (104°F)
  • EUROBAT design life definition: Very Long Life (12+ years)
  • Advanced 3 stage terminal design to ensure leak-free operation – brass terminals provide maximum performance
  • Approved as non-hazardous cargo for ground, sea and air transport DOT 49CFR173.159(d), (i) and (ii)
  • Fast recharging
  • High cyclic performance
  • Flame retardant (UL 94 VO) and LOI of at least 28%
  • Shelf life of up to 24 months
  • Operating temperature range -40°C to +65°C (-40°F to 149°F)
  • State-of-the-art automated manufacturing ensures consistency and reliability
  • High modulus Polyphenylene Oxide (PPO) plastic materials designed to withstand extended elevated operating temperatures and maintain high battery compression essential for reliable operation
  • Non-halogenated thermally sealed plastic casing


Terminal Female M6 x 1.0
Terminal torque 8.0 Nm (71 in-lbs)
1 hr capacity to 1.70VPC @ 20/25°C (68/77°F) 96 / 100 Ah
3 hr capacity to 1.75VPC @ 20/25°C (68/77°F) 114 / 117 Ah
8 hr capacity to 1.75VPC @ 20/25°C (68/77°F) 125 / 127 Ah
10 hr capacity to 1.80VPC @ 20/25°C (68/77°F) 127 / 129 Ah
Float voltage @ 20/25°C (68/77°F) 2.28 / 2.27 VPC
Impedance (1Khz) 2.6 mΩ @ 25°C (77°F)
Conductance 2065 S
Short circuit current 3200 A
Operation temperature range -40°C to +65°C
Nominal voltage 12 V
Height 10.8 in
Width 6.8 in
Length 13.6 in
Weight 97 lbs

All NorthStar batteries are compliant with: Telcordia SR4228, IEC 60896; Bellcore GR-63-Core, Issue 1; British, German, and Russian telecom standards; UL approved and UN2800 certified. NorthStar is registered to ISO 9001 and ISO 14001. Please refer to Data Sheet for additional specifications.

Data Sheet