BatteryPayback asks whether a home battery earns its keep

Field notes

The tool is organized around a three-step estimate: enter a battery quote, define operating assumptions, and compare three usage scenarios. It is designed for an existing solar system and accepts user-supplied electricity prices, costs, and other figures rather than relying only on preset inputs. The page offers an illustrative example alongside personal-input mode, and states that no sign-up is required and inputs stay on the page. The extracted view does not expose the calculation results or formulas.