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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)
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.
You can't lock yourself out of the house with a deadbolt, they require the key to lock
You can also leave without a key and then your roommate also leaves and locks the door.
But you can lock the handle and leave without keys.
You can leave the handle unlocked, and just use the deadbolt this way.
This is how I have locked my house for the last like 100 years without a smart deadbolt.