Multiply the solar panel rated watts by the charge controller efficiency. Multiple the battery capacity in watt-hours by its depth of discharge. ![]() Multiply 12 by 100 to convert the battery capacity into watt-hours. Let's say you have a 12v 100ah lead acid battery with 50% Depth of discharge, a 100-watt solar panel, and an MPPT charge controller.ġ. This method takes into account most of the real-world factors that affect the battery's charge time. Instead, use this formula: Formula Solar battery charge time = (Battery Ah × Battery volts × Battery DoD) ÷ (Solar panel size (W) × charge controller efficiency × battery charge efficiency × 0.8) Solar panel output efficiency - 80% how to calculate solar panel charge time? Advertisementsĭividing the battery amp-hours (Ah) by the solar panel's output amps (Ah ÷ charging amps) is the most inaccurate way to calculate the battery charge time. Charge controller efficiency - PWM - 80%, MPPT - 95%ģ. Battery charge efficiency - Lead-acid - 85%, lithium - 95%Ģ. Advertisements Note: The calculator assumes the following efficiencies:ġ. Click on the 'Calculate' button to find out the estimated battery charge time. Select the charge controller type: Which type of charge controller are you using? PWM or MPPT?ħ. For example, enter 50 for a battery that is half discharged, and enter 100 for a battery that is fully discharged (which is achievable only with lithium batteries).Ħ. Enter the battery depth of discharge (DoD): Battery DoD indicates how much of the battery capacity is discharged relative to its total capacity. Select your battery type from the options provided.ĥ. Enter the battery voltage (V): Is this a 12, 24, or 48-volt battery? Enter 12 for a 12V battery.Ĥ. For example, enter 50 for a 50Ah battery.ģ. Enter the battery capacity in amp-hours (Ah): If the battery capacity is given in watt-hours, divide the watt-hours by the battery voltage to find out the amp-hours. Enter the total solar system size in watts: If you have multiple solar panels connected together, add their rated wattage and enter the total value in watts into the calculator.Ģ. To use the calculator, follow these steps:ġ. How to use our solar battery charge time calculator? For more information on what peak sun hours are and how to calculate them, please refer to our in-depth guide. Note: The estimated charge time of your battery will be given in peak sun hours.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |