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Tired of expensive disposable batteries and rechargeable AA suck. So I made a 10k mAh pack for my deadbolt. (sh.itjust.works)
submitted 1 month ago by to c/3dprinting@lemmy.world
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Eneloops would only last about 3 weeks. And disposable last 2 months. This door is used a lot and since it has Zwave and a door open sensor it sends info on every open.

Bonus, since it can handle the lipo AA batteries that put out 1.8v and it gives the motor more oomph I made the battery pack give 7.2v and it never sticks anymore.

This is a garage-door so its not critical access but is used a lot.

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[–] 2 points 1 month ago (1 child)

Not exactly, my schledge deadbolt has zwave so I can monitor battery percentage in HA. The problem is that the Xtar is a constant voltage rechargeable lithium battery with a constant 1.5V output. They drop to 1.1V to signal low charge. When that happens the deadbolt stops working soon after.

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  • [–] 1 point 1 month ago

    Does 1.1v not signal low voltage? How long does it work for after that? Could you set up an alert so that the moment it changes you get a text message? Or a light turns red or something?

    Just curious. I haven't played with HA, though it's a long term goal.

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