RKS2-250

OPZS

Critical Power Without Compromise

Rekoser OPzS battery. The OPzS series is a traditional tubular plate flooded battery which offers 20+ years design life according to the standard IEC60896-11.With a new design and technical improvement, it offers maximum efficiency and reliability for the widest variety of applications. This series is highly suited for all standby power applications that require the highest levels of reliability and security.

Main Advantages

Nominal Voltage2V
Capacity (25ºC) (20HR)250Ah @ 10HR
Weight (kgs)w/o electrolyte: 16
w/ electrolyte: 21 kg
TerminalF10
Dimensions (mm)124x206x354
12+
LONG LIFE DESIGN
EUROBAT
* EUROBAT CLASSIFICATION.
YEARS
WARRANTY
* Subject to charge and temperature parameters stipulated in this datasheet.

Main Applications

Quality Standards

Engineering Datasheet @REKOSER | Engineered in Europe | https://rekoser.com Page 1/4

RKS2-250

OPZS

Graphics (25°C)

Constant Discharge Ratings (A) at 25ºC

F.V / Time 5MIN 10MIN 15MIN 30MIN 1HR 3HR 5HR 10HR 20HR 100HR
1.90 V479A436A396A388A359A227A167A109A60.1A15.2A
1.85 V517A496A487A485A408A251A196A114A62.7A16.2A
1.80 V826A792A775A667A524A307A208A120A66.0A16.8A
1.75 V991A950A922A763A584A318A214A124A69.3A17.2A

Constant Discharge Ratings (W) at 25ºC

F.V / Time 5MIN 10MIN 15MIN 30MIN 1HR 3HR 5HR 10HR 20HR 100HR
1.90 V929W845W758W733W690W493W358W226W121W33.0W
1.85 V1003W962W935W911W785W516W397W245W132W34.4W
1.80 V1602W1537W1318W1219W1028W656W454W264W137W35.3W
1.75 V1922W1844W1351W1228W1037W695W474W275W140W35.6W
CHARGE CHARACTERISTICS flooded_battery_2v_1200ah_rks2-1200_graf1.png
DISCHARGE CHARACTERISTIC 25oC flooded_battery_2v_1200ah_rks2-1200_graf2.png
SELF DISCHARGE CHARACTERISTICS flooded_battery_2v_1200ah_rks2-1200_graf3.png
FLOAT VOLTAGE VS FLOAT LIFE flooded_battery_rks_graf4.png
CYCLE DISCHARGE VOLTAGE CURVE (Test standard BS EN 61427:2005) flooded_battery_2v_1200ah_rks2-1200_graf5.png
Engineering Datasheet @REKOSER | Engineered in Europe | https://rekoser.com Page 2/4

RKS2-250

OPZS

Specifications

Voltage2V
Capacity (25ºC)250Ah @ 10HR
Cell number1 cells
Charge Voltage (25°C)Cycle - 2.35-2.40V (-5mV/ºC/cell)
Float - 2.21-2.25V (-3mV/ºC/cell)
Max. Charge Current240A
Max. Charge Current2500A
Internal ResistanceApprox. 0.35mOhm (fully charged @ 20°C)
Self Discharge3% of capacity declined per month at 20°C
Capacity Affected by Temperature40°C: 102%, 25°C: 100%, 0°C: 85%, -15°C: 65%

Construction

ComponentMaterial
PositiveLead dioxide
NegativeLead
ContainerSAN
CoverABS (Flame Retardant Optional)
SealantEpoxy Resin
Safety ValveRubber
TerminalCopper
SeparatorFibre Glass
ElectrolyteSulphuric acid
Engineering Datasheet @REKOSER | Engineered in Europe | https://rekoser.com Page 3/4

RKS2-250

OPZS

  • Length: 124 mm
  • Width: 206 mm
  • Height: 354 mm
  • Weight (kgs): w/o electrolyte: 16
    w/ electrolyte: 21 kg

Terminales F10

  • Cycle - 2.35-2.40V (-5mV/ºC/cell)
  • Float - 2.21-2.25V (-3mV/ºC/cell)

Specialized Technical Support

Rekoser offers consulting services for the dimensioning of critical systems, racks, battery monitoring.

https://rekoser.com | +34 958 04 29 73
Engineering Datasheet @REKOSER | Engineered in Europe | https://rekoser.com Page 4/4

Interested in our products?

Contact us for further information or a request for quotation

Contact