sun | power V L — cyclic OPzS cells for renewable energy
Country: Germany · Model: sun | power V L
Low-maintenance 2 V OPzS cells and OPzS bloc monoblocks with liquid electrolyte for daily cycles in solar and hybrid energy systems. The sun | power V L series has passed type tests to IEC 61427 and is made in the DIN 40736-1 format.
- Technology
- flooded lead-acid, tubular plates
- Design
- 2 V OPzS cells and OPzS bloc monoblocks
- Options
- sun | air electrolyte mixing system
- Standards
- IEC 60896-11, IEC 61427 (type tests), DIN 40736-1
Technical specifications
| Technology | flooded lead-acid, tubular plates |
|---|---|
| Design | 2 V OPzS cells and OPzS bloc monoblocks |
| Options | sun | air electrolyte mixing system |
| Standards | IEC 60896-11, IEC 61427 (type tests), DIN 40736-1 |
Specifications are taken from the manufacturer’s technical documentation. Updated .
Description
The flooded batteries have tubular positive plates and liquid electrolyte, so the level is checked periodically and distilled water is added. Flooded cells make it possible to measure the electrolyte density in each jar, which simplifies diagnostics of a large battery. The optional sun | air mixing system feeds air into the cells and equalises the acid density over the height, reducing stratification during cycling without full charge. The IEC 60896-11 standard describes the requirements for stationary flooded lead-acid batteries. Such cells need a separate room or a cabinet with ventilation and an acid-resistant coating, because hydrogen is released during charging.
How to choose
Flooded OPzS cells are chosen where there is staff for scheduled maintenance and a separate battery room. For a residential house or a remote site without regular visits, the gel sun | power VR L or the AGM monoblocks sun | power VR M are better suited. It is advisable to order the sun | air system at once for batteries that cycle daily and rarely receive an equalising charge. For UPS standby systems, the manufacturer's range includes sealed grid | power VR M with 2 V cells up to 1000 Ah.
Request a price and lead time
sun | power V L — cyclic OPzS cells for renewable energy. We reply within one business day.
Or email office@usk.ua or call +38 (044) 339-50-20.
FAQ
How often should water be added to the sun | power V L OPzS cells?
The interval depends on temperature and charging mode and is given in the manufacturer's instructions. The cells are low-maintenance, so with correctly set charging, topping up is rarely needed.
What is the sun | air electrolyte mixing system for?
It blows air through the cells and removes acid stratification, which builds up during cycling with partial charge. The plates work more evenly over their height, and charging takes place with less overcharge.
To which standards are the OPzS cells of the sun | power V L series tested?
Requirements for stationary flooded batteries to IEC 60896-11, type tests for renewable energy to IEC 61427, dimensions to DIN 40736-1.
What is better for an off-grid solar plant, OPzS or OPzV?
OPzS with liquid electrolyte tolerate intensive cycling well but require water topping up and a ventilated room. Gel 2 V OPzV, as in the sun | power VR L series, are sealed and need no topping up.
Can a battery for a hybrid inverter be assembled from 2 V cells?
Yes, the 2 V OPzS cells are connected in series up to the inverter bus voltage, and for smaller systems there are OPzS bloc monoblocks with several cells in one case.
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