Usable Battery Energy Calculator
Usable Battery Energy Calculator
Separate nominal stored energy, usable DC energy and estimated AC output.
Stored energy, usable DC energy and estimated AC output are different stages of the battery calculation.
Begin with rated nominal capacity and apply health, discharge and conversion factors only once. Review each reduction before comparing storage options.
How to use Usable Battery Energy Calculator
- Choose capacity format. Enter nominal capacity, bank voltage and bank capacity.
- Enter usable depth of discharge, retained capacity / state of health and DC to AC efficiency.
- Select Calculate result. Read the returned values alongside the assumptions below before copying, exporting or acting on the result.
Why choose this tool?
The staged result makes it easier to see which assumption removes capacity at each point.
Before you use the result
State of health scales nominal capacity before DoD. AC output excludes inverter idle draw. Enter rated nominal energy rather than already reduced usable energy.
Questions about Usable Battery Energy Calculator
Should I enter an already reduced usable capacity?
No. Enter nominal energy on the stated basis. Otherwise the later reductions can be applied twice.
What should I check before using Usable Battery Energy Calculator?
Check Capacity format, Nominal capacity, Bank voltage and Bank capacity. Use the exact units shown beside the controls and replace any example values with your own inputs.
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