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I have a 540 Ah battery bank made up of two Battle Born Game Changer 3.0 batteries. I have a Victron MultiPlus 12v | 3000w | 120 inverter. And I have a Honda EU2200i inverter generator with a rated output of 15A. What is the formula for figuring out how long it will take to completely charge my battery bank? If someone wants to give me the answer, that's fine, but I'd really like to understand the calculation.
Thanks!
Hi @tlinn
If you search in Google (or similar) for exact the question asked, you'll find a lot of answers:
Examples:
https://www.jackery.com/blogs/knowledge/how-to-calculate-battery-charging-time
https://footprinthero.com/battery-charge-time-calculator
https://ethcircuits.com/battery-charging-time-battery-charging-current/
https://www.iet-journals.org/engineering/how-to-calculate-battery-charge-time/
Have fun!
Alex
I wrote a simple calc that used the battery's SOC to calculate how many AH were remaining and I divided that by the current it was being charged at - Easily translated from hours to hours/minutes/seconds/. SOC isn't 100% accurate but it provided a value that was sufficient for the purpose.
