STT12V50: Flooded Tubular Battery

55 Ah (8 Hr. Rate) to 91 Ah (240 Hr. Rate) 12 Volt Battery

The STT12V50 (1 OPzS 12-50) flooded tubular battery is manufactured with lead selenium and low antimony allowing for a 20 year design life. By utilizing a small amount of selenium in the grid alloy, a dense fine grain structure is produced. This alloy is extremely corrosion-resistant and virtually eliminates inter-granular corrosion which is one of the most common causes of cell failure.

A lead selenium cell combines the advantages of both lead calcium and lead antimony cells while exhibiting none of the disadvantages.

Our STT Series batteries are manufactured in accordance with OPzS DIN40736 standards.

View all available STT Series battery models

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  • 20 year design life
  • Watering intervals: 1-3 years
  • Leak-proof post seal
  • High cycle life: 1200+ cycles @ 80% DOD
  • 100%+ capacity upon delivery
  • No positive plate growth
  • Tank formed plates
  • Safe — zero voltage exposed to personnel
  • Flip-top, easy-fill, flame arrestor vent caps
  • Withstands high temperature applications better than lead-calcium batteries
  • Many in stock and ready to ship!
Name STT12V50: Flooded Tubular Battery
Model Number STT12V50
Weight 86.000000
Voltage(V) 12
Cell Dimension (Inches) 10.7L x 8.08W x 15.1H
8 Hr. Ah Rate to 1.75 V/cell 55
Electrolyte Weight (lbs.) 23.8
Electrolyte Volume (gallons) 2.3
I.R. (m0hms) 17.3
Short Circuit Current (Amps) 620
No. of Positive Plates 1


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