App Store
Version 1.4 · 2026-10-02
CarPlay is here: charge, power, cells and the 12 V battery on your car's screen. The 12 V battery is now read directly. Fixes and smaller improvements.
Too little checked to say Store information only. We haven’t analysed this app or read its reviews yet.
Not yet tested.
The store currently lists version 1.4, updated 2026-10-02.








Store screenshots supplied by the developer.
BZ-Battery reads the high-voltage battery in a Toyota bZ4X and shows you what the car keeps to itself, on your phone and on your CarPlay screen.
You need a Bluetooth LE OBD adapter, plugged into the port under the dash. It is tested with an OBDLink CX; vLinker and Veepeak should work too. The cheapest "ELM327 mini" clones often can't read this car. The adapter is not included.
What you get:
• Charge, power and current, live
• Every cell voltage, with the weakest one marked
• All pack temperature sensors
• Battery health, as the car itself reports it
• Measured pack capacity, tracked over months
• The 12 V battery's voltage
• Every drive and charge kept, with the energy it used
• Five dashboards. Pick the one you like.
• CarPlay: charge, power, cells, temperature and 12 V on the car's screen
Which cars:…
From the developer’s store description.
For developers and the curious
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No package has been scanned for this app, so nothing is published about what it ships. That is an absence of evidence, not a finding.
Supporting measurements: not a complete list of possible harms or positives. Measurement vocabulary 1.4 · how these are measured
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CarPlay is here: charge, power, cells and the 12 V battery on your car's screen. The 12 V battery is now read directly. Fixes and smaller improvements.
bz-batteryWhat the stores publish. Store ratings are the stores’ numbers, not Appworthy’s, and are never averaged across stores.
No itemized purchase list is available for this listing.
Not yet tested. No analysis has been published for this app, so there is no method to describe for it yet. A missing label is not a clean bill of health: it means nothing has been read, not that nothing is wrong.
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