To calculate how long a 200Ah battery can power your refrigerator, you need to know the voltage of your battery, because batteries with different voltages can provide different amounts of power, for example, a 200Ah 24V battery can provide twice as much power as a 200Ah 12V battery, which is what you need to know, and in general you can learn about the operating voltage of the battery from its instruction manual. This is something you need to know, and you can generally find out the operating voltage of the battery from the battery’s instruction manual.
In addition to the working voltage of the battery, you also need to know the power of your refrigerator, which is an indispensable data for calculating how long the 200Ah battery can supply power to your refrigerator, the power of different refrigerators is different, the power of the refrigerator can be learned from the instruction manual of the refrigerator, and the power of the refrigerator is about 300W-1500W in general, the power of the household refrigerator is about 300W-1500W.
After knowing the voltage of the 200Ah battery and the power of the refrigerator, you can use the following formula to calculate, namely
Watt-hours of the battery = Amp-hours of the battery × operating voltage of the battery①
Battery power supply hours = Battery watt-hours / Refrigerator power②.
For example, assuming that the working voltage of your 200Ah battery is 12V, and the power of your refrigerator is 500W, then by substituting the above formula, you can get that your 200Ah 12V battery can supply power to your refrigerator for about 4.8 hours, which shows that the power supply time of your 200Ah 12V battery for your refrigerator is still very considerable.
However, you need to note that this is only a rough calculation, can provide you with a certain degree of reference, because most of the refrigerator is not always working, but intermittent work, so under normal circumstances, a 200Ah lithium iron phosphate batteries can provide power for your refrigerator for a longer period of time.
To calculate how many 200Ah batteries you need to meet your family’s power supply, you need to calculate how much power you need to consume at home, which requires you to calculate the power consumption of all electrical appliances in your home, want to calculate the power consumption of electrical appliances you can use the following formula, assuming that the daily consumption of electrical appliances E, electrical appliances work for t, electrical appliances, the power of the P, i.e.
E (Wh) = P (W) × t (h)
If the power of the lamp in your home is 10W, and the operating time of the lamp is 5 hours per day, then the daily power consumption of the lamp is 50Wh. Add up the daily power consumption of all the appliances to get the total daily power consumption of the appliances in your home.
Assuming that you are using the depth of discharge of 80% of the 200Ah 24V lithium iron phosphate batteries for your family power supply, if your family’s daily power consumption of 25kWh, then you can use the following formula to calculate how many 200Ah 24V lithium iron phosphate batteries you need to supply power to your family, the daily consumption of E, the lithium iron phosphate battery capacity for the C, the number of batteries needed for the N, the operating voltage of all electrical appliances will be added up to get the total daily consumption of electrical appliances at home. The operating voltage of the lithium iron phosphate battery is V, i.e.
N=(E×1000) /(C×depth of discharge of battery × V)
Substituting the data, we can see that you need about seven 200Ah 24V LiFePO4 batteries to meet the daily power supply of your family.
Through the in-depth understanding of how to calculate the power supply time of the battery for your equipment, you can reasonably buy batteries, which is very important for your daily life, of course, if you feel that charging the battery is too much trouble, you can choose additional power generation equipment, such as solar power, which may be a good choice for you!
.png "English")
