Rekoser

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

The ROS2-800 is a 2 V, 800 Ah (10-hour rate) OPzS lead-acid battery from the Rekoser OPzS (Flooded) series. It measures 191 × 210 × 645 mm and weighs 44 kg, with F10 terminals. It stores 1.6 kWh and delivers up to 4000 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 RKS2-800.

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
Nominal Voltage2 V
Capacity (25ºC)800 Ah (C10)
Energy1600 Wh
Weight44 kg
TerminalF10
Dimensions191 × 210 × 645 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

ROS2-800

OPZS (FLOODED)

Graphics (25°C)

Constant Discharge Ratings (A) at 25ºC

F.V / Time5MIN10MIN15MIN30MIN1HR3HR5HR10HR20HR100HR
1.90 V319A290A264A258A239A151A111A72.8A40A10.2A
1.85 V345A330A325A323A272A167A130A76A41.8A10.8A
1.80 V550A528A517A350A350A205A138A80A44A11.2A
1.75 V661A634A614A390A390A212A142A82.4A46.2A11.4A

Constant Discharge Ratings (W) at 25ºC

F.V / Time5MIN10MIN15MIN30MIN1HR3HR5HR10HR20HR100HR
1.90 V619W563W506W460W460W329W238W150W80.6W22W
1.85 V669W642W623W523W523W344W265W163W87.8W22.9W
1.80 V1068W1025W878W686W686W438W302W176W91.3W23.5W
1.75 V1282W1230W901W691W691W463W316W183W93.5W23.7W
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

ROS2-800

OPZS (FLOODED)

Specifications

Nominal Voltage2 V
Capacity (25ºC)800 Ah (C10)
Energy1600 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 Current160 A
Max. Discharge Current4000 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

ROS2-800

OPZS (FLOODED)

Quick Installation Guide

To ensure optimal performance and maximize the lifespan of your REKOSER ROS2-800 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: 191 mm
  • Width: 210 mm
  • Height: 645 mm
  • Total Height: 700 mm
  • Weight: 44 kg
Dimensions (mm) ROS2-800

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 160 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

ROS2-600 (2 V · 600 Ah) · ROS2-1200 (2 V · 1200 Ah) · See all ROS series models

Specialized Technical Support

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

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