In above case, we need to use 4 pcs 12V 150Ah batteries for the battery bank What should I consider before choosing battery ?
#SOLARCELL BATTERY SERIES#
Single gel deep cycle battery is 12V, so we need a multiple number of 4 which make it into 48V system by series connection. It means solar panel and battery bank should be 48V. However, the solar inverter system for household use is usually 48V system, The single battery capacity is 12V x 150Ah = 1800WhĤ500Wh / 1800Wh = 2.5, so we need at least 3 pcs battery to support AC loads. If we use 12V 150Ah gel deep cycle battery, ( Gel link ) The calculation is :ġ500W x 3 hours = 4500Wh, which means you need 4500Wh battery capacity For example, if you have 1500W AC loads and need to be powered by batteries for 3 hours. It depends on how much AC loads, which are usually home electric appliance and how long they will be powered by batteries. How many battery should I have for my solar power system ? We should choose deep cycle battery for battery bank of solar power system. So solar battery is always being fully charged and deeply discharged. Battery is acting as a solar energy storage device, it reserve solar power in sunny time and provide power in raining time or night. Obviously, battery in a solar power system is being charged in daytime by sun and discharged in cloudy day or night. The Tubular battery is named by using tubular positive plate for extra longer cycle life which is almost triple times than AGM and Gel deep cycle battery Why should we use deep cycle battery for solar power system ? People are focus on its “standby life” than “cycle life” When battery is being used as a power backup, it usually will not be deeply discharged. This kind of battery are being used, technically called “discharged”, only several times a year, the most of time they are just waiting and standby.
The battery bank means several batteries with parallel and series connection set up into an energy storage bank, which store solar energy from solar panel and provide electricity to loads via DC-AC inverter. What is battery bank for solar power system ?Īfter understanding 4 major types of solar power systems, let’s talking to battery bank.
AC loads also secured by LWI high quality gel deep cycle batteries when grid is failure (blackout). Battery can be used to supply AC loads in day or night whenever grid electricity rate is expensive.
The batteries are charged by AC grid in cloudy day and night. AC loads are supplied by solar power directly, the surplus solar energy can be used to charge batteries or sell back to grid. Hybrid solar power system combines the advantages of “On Grid net metering ” and “Off grid” system.
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