What is usable capacity?

What is usable capacity?

This shows how much energy that battery can supply (=maximum depth of discharge).

A typical family that’s out and about during daylight hours uses about 70% of their daily energy in the evening. So if your household uses (for example) 20kWh per day, you can multiply that by 70% to find that a battery with 14kWh usable capacity will work for you. 

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