Renewable energy applications in the Asia Pacific region pose a major challenge for accumulators. To maintain reliable service in isolated locations and hostile environments, they are subject to widely fluctuating demands and charging patterns. Alcad's new Solar series nickel-cadmium batteries are designed to provide the ideal solution.

Key questions to ask when choosing a storage battery A typical renewable energy system will include photovoltaic (PV) or wind power generators individually or in a combination with conventional fuel-fired generators to form a stand-alone hybrid system. The battery bank for energy storage plays a key role in ensuring the autonomy of the system, so it must be as reliable as the generator and control elements and offer the same service life. When choosing a storage battery, it is very important to remember that it will be subject to very different demands than standby and emergency power batteries. There are some basic questions to ask:

1. Will the battery be able to withstand both daily and seasonal cycling and variable DOD (depth of discharge) and SOC (state of charge)?

2. The intermittent nature of the energy supply will bring fluctuating charging voltages and currents. Will the battery be able to cope with this?

3. Can the proposed battery operate in both high and low extreme temperatures?

4. Will the battery offer reliable, unattended operation with minimal maintenance?

5. Does the battery have a robust construction to withstand transportation to remote areas?

6. Can the battery be easily installed with unskilled labor and limited handling equipment?

7. Most importantly. Will the battery provide the long-term reliability and availability needed to ensure cost-effective operation of the renewable energy system over its projected 20-year service life?

Alcad Solar - specialized Ni-Cd batteries for renewable energy installations VRLA (valve-regulated lead acid) batteries are used in many renewable energy installations. However, the tropical climate and harsh operating conditions in the Asia Pacific region are sometimes at the limit of acceptable conditions for this type of battery. This can shorten battery life and/or cause premature failures, resulting in underperformance of the entire system. In the 1980s, Alcad introduced the new Vantage line of rechargeable nickel-cadmium batteries with a rugged pocket plate construction. And this design has become established as an ideal, reliable and cost-effective alternative to the VRLA in demanding applications worldwide. The design has now been further refined and developed to create the Alcad Solar range, which has been specifically developed to provide fully reliable service and low maintenance for renewable energy installations.

Complex charging conditions Alcad Solar batteries are designed to keep working in any state of charge and reach a high state of charge. charge without boost or regeneration charges. This eliminates the need to overcompensate for unpredictable charging conditions with high charging voltages, making it easier to manage the complex charging patterns required for efficient operation of the renewable energy system. Alcad Solar batteries are compatible with all existing PV charge controllers and conventional industrial battery chargers. They have a typical charging voltage of 1.5 V per cell, which minimizes water consumption and eliminates unplanned service calls.

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