Rekoser

The energy tank. 20+ years of proven service life.

The ROS2-150 is a 2 V, 150 Ah (10-hour rate) OPzS lead-acid battery from the Rekoser OPzS (Flooded) series. It measures 103 × 206 × 354 mm and weighs 10.5 kg, with F10 terminals. It stores 300 Wh and delivers up to 1000 A. The energy tank. 20+ years of proven service life. Typical applications: Solar/Wind Energy Systems, Electrical Substations, Telecommunications and Base Stations and Railway Signaling and Infrastructure.

Formerly RKS2-150.

Main Advantages

  • Technology: Vented tubular plates with liquid electrolyte
  • Maintenance: Periodic topping up with distilled water required
  • Durability: Over 20 years proven design life at 20ºC
  • Control: Transparent container for easy electrolyte level monitoring
ROS2-150 – 2 V 150 Ah OPzS battery
Nominal Voltage2 V
Capacity (25ºC)150 Ah (C10)
Energy300 Wh
Weight10.5 kg
TerminalF10
Dimensions103 × 206 × 354 mm
20
YEARS
LONG LIFE DESIGN
* EUROBAT CLASSIFICATION: >12 Years (Very Long Life).
2
YEARS
WARRANTY
* Subject to charge and temperature parameters stipulated in this datasheet.

Main Applications

Solar/Wind Energy Systems
Electrical Substations
Telecommunications and Base Stations
Railway Signaling and Infrastructure
Maritime
UPS and Data Centers

Quality Standards

CE CERTIFIEDISO 9001 / 14001IEC 60896-21/22YD/T1360BS6290 part 4DIN40742
Rekoser

ROS2-150

OPZS (FLOODED)

Graphics (25°C)

Constant Discharge Ratings (A) at 25ºC

F.V / Time5MIN10MIN15MIN30MIN1HR3HR5HR10HR20HR100HR
1.90 V59.9A54.5A49.5A48.5A44.9A28.4A20.9A13.7A7.51A1.91A
1.85 V64.7A62A60.9A60.6A51A31.4A24.5A14.3A7.84A2.03A
1.80 V103A99A96.9A83.4A65.6A38.4A26A15A8.25A2.1A
1.75 V124A119A115A95.4A73.1A39.8A26.7A15.5A8.66A2.15A

Constant Discharge Ratings (W) at 25ºC

F.V / Time5MIN10MIN15MIN30MIN1HR3HR5HR10HR20HR100HR
1.90 V116W106W94.8W91.7W86.3W61.7W44.7W28.2W15.1W4.13W
1.85 V125W120W117W114W98.1W64.5W49.7W30.6W16.5W4.3W
1.80 V200W192W165W152W129W82.1W56.7W33W17.1W4.41W
1.75 V240W231W169W153W130W86.9W59.3W34.4W17.5W4.45W
CHARGE CHARACTERISTICS CHARGE CHARACTERISTICS
DISCHARGE CHARACTERISTIC 25oC DISCHARGE CHARACTERISTIC 25oC
SELF DISCHARGE CHARACTERISTICS SELF DISCHARGE CHARACTERISTICS
FLOAT VOLTAGE VS FLOAT LIFE FLOAT VOLTAGE VS FLOAT LIFE
CYCLE DISCHARGE VOLTAGE CURVE (Test standard BS EN 61427:2005) CYCLE DISCHARGE VOLTAGE CURVE (Test standard BS EN 61427:2005)
Rekoser

ROS2-150

OPZS (FLOODED)

Specifications

Nominal Voltage2 V
Capacity (25ºC)150 Ah (C10)
Energy300 Wh
Cell number1
Charge Voltage (25°C)Cycle use: 2.35-2.40V (-5mV/ºC/cell)
Float use: 2.21-2.25V (-3mV/ºC/cell)
Max. Charge Current30 A
Max. Discharge Current1000 A
Internal Resistance0.35 mΩ
Self Discharge3 % of capacity per month at 20 °C
Capacity Affected by Temperature40 °C: 102 %, 25 °C: 100 %, 0 °C: 85 %, -15 °C: 65 %

Construction

ComponentMaterial
ContainerSAN
CoverABS (Flame Retardant Optional)
ElectrolyteSulphuric acid
NegativeLead
PositiveLead dioxide
Safety ValveRubber
SealantEpoxy Resin
SeparatorFibre Glass
TerminalCopper
Rekoser

ROS2-150

OPZS (FLOODED)

Quick Installation Guide

To ensure optimal performance and maximize the lifespan of your REKOSER ROS2-150 battery, follow these assembly and connection guidelines.

1. Space and Dimension Verification

Before proceeding, ensure the receptacle or cabinet of your equipment complies with the unit's physical measurements:

  • Length: 103 mm
  • Width: 206 mm
  • Height: 354 mm
  • Total Height: 409 mm
  • Weight: 10.5 kg
Dimensions (mm) ROS2-150

2. Terminal Configuration (F10)

3. Charge Parameters

  • Cycle use: 2.35-2.40V (-5mV/ºC/cell)
  • Float use: 2.21-2.25V (-3mV/ºC/cell)
Maximum Current: Do not exceed 30 A of charge.

4. Safety and Storage

Maintenance: Check the electrolyte level and top up only with distilled or demineralised water.

Position: Always upright.

Ventilation: Install in a ventilated room: hydrogen is released during charging.

Storage: Store charged, in a cool and dry place, and recharge periodically.

Nearby models

ROS2-100 (2 V · 100 Ah) · ROS2-200 (2 V · 200 Ah) · See all ROS series models

Specialized Technical Support

https://rekoser.com | +34 958 04 29 73

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