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How many hours can you run a 300 amp load if you have a 300 amp hr battery bank?
Wiki User
∙ 12y ago
A 300 ampere-hour battery can supply 300 amperes for somewhat less, sometimes substantially less, than one hour. It might not even be rated to provide 300 amperes at all. It depends on the battery.
The reason for this is that ampere-hour ratings are, by definition, normalized to an eight-hour rate. This means that you can pull 300/8, or 37.5 amperes from that battery for 8 hours. That is the reference point.
If you were, for instance, to pull 18.75 amperes, you would expect the battery to last somewhat longer than 16 hours, and if you pulled 75 amperes, you would expect the to last somewhat less than 4 hours, both from a full charge, and both from a recently equalized state.
You need to check the published discharge curve for the batter to know for sure.
Wiki User
∙ 12y ago
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