Usually, the efficiency of a 100-watt inverter is within 80% to 95%. When the discharge is maximum, around 10 volts of the battery gets drained.Īs per the direct calculation, when the power of the inverter is 100 watts and the voltage is 12, the amperage will be, 100 watts / 12 volts = 8.33 amps. And when the battery charges fully, it stores about 13.8 volts. However, a battery of 12 volts can create up to 15 volts. You would need the voltage of the inverter as well to measure the amps. How many amps does a 100 watt inverter draw?Īs I said before that only the number of watts is not enough to determine how many amps it draws. So, when the peak efficiency is measured, the overall value gets somewhat closer to the amperage value derived from Ohm’s law. Moreover, the peak efficiency of the inverter power is hardly 100%. It usually provides a volt more than that. The voltage of the battery is not limited to the amount of volt mentioned in the manual. There are a number of other draining factors that need to be considered as well as they influence the real value of amps an inverter. However, this might seem easy but it is not accurate. Therefore, when you have the value of both volts and watts of your inverter, all you need to do is to divide the value of watts by the value of voltage.Īnd thus, the result you will get from the calculation is the value of the amperage of the inverter. To measure the amps of an inverter or any other electrical appliance, you will need the values of volts and watts.īecause the amperage is the number of watts per voltage. Renogy products have the highest recommendation from us for their solar panels, deep cycle batteries, kits, and charge controllers.Ĭheck the product portfolio & latest Prices. We at walkingsolar always look for quality and durability. Are you looking for the BEST quality solar products? Renogy is one of the best out there based in the USA.
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