this post was submitted on 06 Jul 2026
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Cybersecurity
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My house batteries for my PV system are also susceptible to this. Ugh.
They've both got Bluetooth for monitoring and configuration. Some config changes require a PIN but not the settings to enable/disable charge and discharge. Someone could just get within range of them, install the official app, and set discharge to "off" and shut down my house.
I've also not found a way to disable bluetooth on them. Gonna have to put them in a damn Faraday cage if I decide to worry about that possibility. :sigh:
There is a Bluetooth chip somewhere that is connected somehow. Assuming you can somehow get to it without destroying the battery, disconnecting it shouldn't be difficult.
I thought about that, but one of the safety features of these batteries is an active fire suppression system that fills the interior with some kind of fire-extinguishing foam. I'm terrified to try to take these apart for fear of somehow triggering that. Plus, they're hella expensive lol.