Solar Panel And Battery Bank Calculator

Individual battery voltage each battery will have the same voltage and it ll likely be less than the battery bank voltage.

Solar panel and battery bank calculator.

Voltage of your battery bank you already selected a voltage in the second input in the above calculator though you may change your mind either during this part or later. When using an inverter the current draw on the battery side can be extremely high so you may need a battery bank that is larger than the minimum. Because of the better efficiency and deeper discharge depth lithium battery banks tend to be only 50 60 of the size of a comparable lead acid bank. The calculator assumes you will need to size your system to get you through average amount of sun light in the least sunniest month of the year for your location.

Unfortunately we don t design systems for our customers but we do offer you the tools to design your own system. For example 1200w drawn at 240v is only 5a whereas at 12v this current increases to 100a. At a bare minimum most customers will have have a solar panel that can output two day of power in a single day and they will often select a battery that can withstand two days without solar and still not. The lithium batteries we use are purpose built for off grid solar and utilize a special lithium chemistry called lithium ferro phosphate lifepo4 commonly called lfp.

Please remember that this calculator works out the minimum battery bank size for a given power consumption.