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Card 073 of 9932026-09-21 issue

Observed arrival · 2026-09-21

Battery Truth

batterytruth.org Visit website
Editorial interest 84/100 Selection signal · not a rating of the site

A retailer-neutral tool that sizes a home battery, checks an installer’s savings claim, and tracks its payback.

Landing page captured for the 2026-09-21 issue.
For
Homeowners checking a battery installer’s quote
Worth noticing
The demo uses two years of half-hourly readings and quarterly bills from a generated Victorian household.

Field notes

Battery Truth models storage against interval import and export data rather than relying on a quoted system size. Its demo includes a 6.6 kW solar household, a time-of-use tariff, two years of half-hourly readings, and quarterly bills. The site also distinguishes temporary modelling data from retained daily totals and results, while noting that real account connection has not been enabled.

Observed signals

Read the marks

Editorial observations of this landing page, not a rating.

OpenPublic substance visible
$PaidCommerce or pricing visible
PrettyNotable craft visible
ProPolished or operationally mature
NicheUnusually specific use
ƒJavaScriptBrowser-side code central

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batterytruth.org

Landing page observed 2026-09-21. The live site may have changed.