OPzS Bloc

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Eternity Technologies vented lead-acid batteries for the standby and renewable energy market. Optimised design results in a low maintenance, reliable energy storage solution for critical and unstable conditions.


  • High energy density
  • Robust tubular positive electrode design, compliant with DIN 40736
  • Minimal maintenance due to low antimony alloy and large electrolyte volume
  • Operating temperature 15°C to +35°C
  • Low self discharge rate of approximately 3% per month at 20°C
  • EUROBAT design life: Long Life > 12 years
  • Fully recyclable with low CO2 footprint
  • High cyclic performance
  • Up to 3 year topping-up intervals in float condition
  • 1500 cycles @ 80% D.O.D


  • Solar/ Wind Power Stations
  • Traffic Systems
  • Hydro Power Generation
  • Off Grid Solutions
  • Telecommunications/ Mobile Phone Stations
  • Power Distribution Companies
  • Power Plants
  • Switching Stations
  • Emergency Lighting

Weight, Capacity and Dimension Charts

Type description according to DIN Blocs: 40 737-3Rated Voltage (V)Rated Capacity C10 according to DIN AhActual Capacity C10 1.80VPC at 20°C (Ah)Length (L) max. mmWidth (W) max. mmHeight (H1) max. mmHeight (H2) max. mmWeight dry (kg)Weight filled (kg)Internal Resistance (mOhm)Short Circuit Current (A)
6V 3 OPzS-ET150*615017227220534940029.036.53.231884
6V 4 OPzS-ET200*620023027220534940035.247.12.802150
6V 5 OPzS-ET250*625028538020534940043.560.92.502620
6V 6 OPzS-ET300*630034538020534940050.567.12.102960
12V 1 OPzS-ET5012505827220534940024.437.718.20670
12V 2 OPzS-ET1001210011527220534940037.749.49.401220
12V 3 OPzS-ET1501215017238020534940053.069.86.601800