The time it takes to charge a 100Ah battery with a 200W solar panel depends on several factors such as sunlight intensity, panel efficiency, battery condition, and charging controller efficiency.
However, let's calculate a rough estimate based on some assumptions:
- Battery Capacity: 100Ah
- Solar Panel Output: 200W
- Charging Efficiency: For simplicity, let's assume 80% efficiency (real-world efficiency can vary)
- Sunlight Availability: Full sunlight throughout the charging period (which is not practical, but for estimation purposes)
First, we need to convert the 200W solar panel output to Amps using Ohm's Law (P = IV). Given that power (P) is 200W and voltage (V) is usually around 12V for a battery system, we can find the current (I):
I=P÷V=200÷12=16.67A
Now, let's consider the charging efficiency. We assumed 80%, so the effective charging current would be:
Now, to calculate the charging time, we need to find out how many Ampere-hours (Ah) the solar panel can provide in an hour:
Charging Rate = Effective charging current = 13.33A
Given that the battery capacity is 100Ah, we can divide the battery capacity by the charging rate to find the charging time:
Charging Time = Battery Capacity÷Charging Rate = 100Ah÷13.33A ≈ 7.5 hours
So, under these assumptions, it would take approximately 7.5 hours to charge a 100Ah battery with a 200W solar panel at 80% efficiency, assuming constant full sunlight.
