Home > Product & Solutions > OPzS Series – 2V Tubular Flooded Battery

The OPzS batteries is the traditional tubular plates flooded batteries, it offer 20 years design life and a cycle life of 1800 cycles to 80% DOD according to IEC896-2.This range battery is most suitable for use in all standby power applications that demand the highest levels of reliability and security.

Features and Benefits

  • 20 years design life at floating condition
  • Up to 2 years topping up intervals
  • Tubular positive plates with prolonged cycle life
  • High operational reliability
  • Lead calcium die cast grid with improved corrosion resistance capability
  • Dry charged package and delivery ensure longer shelf life
  • Explosive-proof with special designed vented plug


  • Positive plates Tubular plates with die cast Pb-Ca alloy grid
  • Negative plates – Balanced lead-calcium grids for improve recombination efficiency
  • Separators – leaf shape PVC-SiO separators
  • Electrolyte – Dilute chemical grade sulphuric acid of 1.240 specific gravity
  • Battery container and cover – UL94 V0 flame retardant SAN
  • Pillar seal – 100% factory tested, proven two layers epoxy resin seal
  • Relief valve – Complete with integrated flame arrestor

Charging Voltage and Setting

  • Constant voltage charging is recommended
  • Recommended float charge voltage: 2.23VPC @20-25°C
  • Float voltage temperature compensation: -3mV/°C/cell
  • Float voltage range: 2.20 to 2.23 VPC@20- 25°C
  • Cyclic application charge voltage : 2.35V/cell
  • Max charge current allowable : 0.25C10A


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