Batteries

Batteries are required in any stand alone type system or no grid-tie systems. They are used to store power generated by a variety of alternative energy producing methods such as photovoltaic solar power. This d.c. power stored in the batteries is then used to power “inverters” which convert the lower d.c. voltage into higher voltage a.c. power which matches the locally available grid voltage. This is typically 120/240 volts 60 cycles in North America or 240 volts 50 cycles in Europe, Middle East, and Asian countries.

As of this time, lead acid batteries offer the most cost effective and reliable type of battery, although with the current efforts being pursued in battery technology, there may be better options available in the near future. For the present, lead acid types batteries do require minimal maintenance such as  being kept clean and filled with distilled water or purified water rated for batteries. Failure to do this will result in plate sulfation and premature failure. The other factor to consider is the environment in which the batteries are kept. Batteries like warmth. 77 to 80°F  being ideal for maximum storage capacity and efficiency. At 30 to 40°F they lose over 40% of their storage capability which is the last thing you want on cold winter nights. Cleanliness is another consideration so as to avoid conductive matter which can provide low level shortage paths between connection lugs which will shorten battery life as well as cause inaccurate battery charging.

The next and most important consideration is proper venting to prevent explosive gasses from collecting. Several manufacturers fabricate custom insulated and power vented battery boxes for each installation. additionally, when fabricating battery interconnect and hook up cables, adhesive heat shrink tubing is utilized at the lug ends to preclude cable core corrosion which, while being unseen,  can lead to severe system performance degradation. As a final consideration, electronic battery desulfators can be installed which can greatly enhance battery life when they are operated in a proper charge regimen.

Regarding battery temperature, some  many areas of the world experience very cold winter temperatures, especially night time temps. Often times, batteries must be located outside of heated areas and require some form of auxiliary heat. A unique heated liquid transfer system has been designed which utilize a radiant coil tube in the battery box. the heat source which is "not" electrical, as it would be counterproductive, is remotely located to preclude any fire or explosion in the battery box which could likely have a hydrogen presence. The heat source is quite unique and very efficient. Alternative energy installations require features unique to each customers’ situation.