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AGM batteries are maintenance free and use gel rather than water. We have installed AGM (Absorbed Glass Mat) deep cycle batteries. Unsuitable batteries will simply fail within 6-12 months and will degrade fast over its short life span. Only deep cycle batteries are designed to cope with constant charging and discharging of the batteries. Household needs are to fill the battery bank with power during sunlight hours and draw the battery down at night and during overcast spells. Unscrupulous salespersons often design solar systems with low quality batteries such as 12v car batteries. Your solar batteries must be deep cycle batteries.This discussion about the batteries is mostly not technical and is based on experience with regards to the basic research done before buying a solar system, research done to understand how best to look after batteries for an extended life and observation of our batteries in real life and real time. A robust solar battery bank is important for both daytime and night time use. We use our solar system for water heating with a heat pump (daytime only), cooking with induction plates (daytime and at night) and use appliances such as the oven and tumble dryer (daytime only). The relative importance of batteries are often underestimated and underappreciated. The all in Inverter (incorporating battery charge control, conversion of DC to AC and supply control to the household).The panels (electricity generation in DC).The very first thing everyone asks when we tell them that we have converted to off-grid Solar is “How many panels do you have?” Yes, panels are important but every off-grid solar system will have three main components: Municipal charges have increased exponentially too! Thus cost estimates for purchasing solar may be less (and you’ll get better tech). Solar articles written during the course of installation (2014) and 2015. Must know facts about Solar Batteries (Author: The Economist) Provided the following source is acknowledged: Available worldwide.ĭownload the information leaflet (1.8 MB) about SolarGIS.Global horizontal irradiation is the most important parameter for evaluation of solarĮnergy potential of a particular region and the most basic value for PV simulations.The maps are free for public use, their reproduction and adaptation is authorised Support information - terrain, population density and landscape.Immediate access to key information for any site.Support to site selection and prefeasibility.Vast amounts of information available in one touch: 5 solar parameters, 2 temperature parameters, additional support information.Interactive geo-location, based on Google technology.Easy sharing of a site position using the Send link tool.High-accuracy geographic coordinate tool.Search using name/address or coordinates.Data (grid cell) resolution up to 250 m.iMaps also includes special maps and information from high resolution databases of Terrain (elevation, slope, azimuth), Land Cover and Population. Included is immediate access to long-term averages of various parameters from SolarGIS database. Global and Diffuse Horizontal Irradiation.The following interactive maps are featured: Our tool for exploration and site selection.