TAB OPzS Battery Open PB Tubular Element 2V/800Ah – 8 OPzS 800

The TAB OPzS 2V/800AhIt is a stationary, ventilated lead-acid battery, manufactured with tubular positive plates and liquid electrolyte. It is designed to offer high reliability, long service life and excellent performance in deep cycles, being a professional solution for systems that require stable and long-lasting power.

Especially recommended for off-grid solar installations, telecommunications, UPS systems, emergency lighting, substations, industrial control and critical 24/7 applications.

Why choose an OPzS TAB battery for solar and industrial power

OPzS technology is one of the most widely used in:

• Off-grid solar installations
• Telecommunications
• UPS systems
• Emergency lighting
• Substations and control centres
• Auxiliary and critical systems

Its tubular design ensures stability, durability and a highly competitive cost per cycle.

Main advantages of the TAB OPzS Battery Open Pb Tubular Element 2V/800Ah – 8 OPzS 800

Long service life

Thanks to their tubular construction, high-quality materials and robust design, these batteries offer a longer service life than many conventional lead-acid batteries.
Its service life can last up to 15–20 years in stationary use, with proper maintenance.

Excellent performance in deep dives

Designed for stationary and deep cycle applications, they allow for a greater number of cycles (1,000–1,500) when used correctly (discharges at 50% DSC or less), thanks to their tubular design.

Low maintenance

Although they are open (ventilated) batteries, the design includes a number of advantages that facilitate maintenance:

• Low self-discharge (≈2–3% per month).
• Long refill intervals (approx. every 2 years at 20 °C).
• Transparent container for easy inspection.

Wide operating temperature range

This battery maintains stable performance even in hot or cold environments due to its operating temperature range, which ranges from –20 °C to +55 °C, although it is recommended that it be kept between 20 °C and 25 °C.

Thanks to its excellent performance in high and low temperatures and its resistance to prolonged discharges, the OPzS range operates reliably even in demanding environments.

Flexibility for large and small installations

When using 2 V cells, they can be configured in multiple voltages (12 V, 24 V, 48 V) and capacities depending on the number of cells in series/parallel, which is very useful in solar installations, telecommunications, energy storage, etc.

Highly competitive cost per cycle

The OPzS range offers one of the best costs per cycle within lead-acid technology, combining a service life of up to 15–20 years with 1,000–1,500 actual cycles at 50% DoD. This translates into a significantly lower total cost of ownership than AGM or GEL in stationary applications.

Operating and electrical specifications of the TAB OPzS Battery Open Pb Tubular Element 2V/800 Ah – 8 OPzS 800

• Nominal voltage per cell: 2 V
• Rated capacity:
  • C5: 778 Ah
  • C10: 912 Ah
  • C100: 1204 Ah
• Charging time up to 92%: up to 6 hours with initial current 1.5*I10, 2.23 V/cell, 50 % C10 discharged
• Recommended charging voltages (per cell):
  – Flotation/maintenance: ≈ 2.23–2.25 V/cell (this applies to float charging between 10–30 °C, with temperature correction).
  – Boost charging / fast recharging: ≈ 2.35–2.40 V/cell (limited time; typically 3–5 hours once this voltage is reached).
• Depth of discharge: Normally up to 80 %. Discharges exceeding 80 % of DOD or discharges beyond the final discharge voltages should be avoided.
• M10 terminals: 4
• Estimated lifespan: up to 15–20 years (depending on temperature and usage).
• Cycles of use: 1,000 – 1,500 cycles (depending on test standard and discharge depth).
• Operating temperature range: –20 °C to +55 °C
• Guarantee: 2 years
• Dimensions: 210 × 191 × 711 millimetres (length × width × height)
• Weight: 64 kg

Technical specifications for TAB OPzS Battery Open Pb Tubular Element 2V/800 Ah – 8 OPzS 800

Technical specifications for TAB OPzS Battery Open Pb Tubular Element 2V/800Ah – 8 OPzS 800