I have a door knob below a dead bolt and there is not enough room to remove the batteries with diassembliy of the lock. Would it be ok to add a charging jack so I could plug a charger in while the unit stays installed. I was thinking to solder a jack on to the battery magazine and use a 6volt charger. Would that be ok?
You will need some sort of charge controller as well. Make sure the 6volt charger has the proper checks in it, and isn’t just always feeding 6volts if needed or not.
Interesting solution to your problem. If you could post some pictures of the before/after it would fun to see your project.
You could use something like this:
It is a AA battery with a micro usb charge port built into it.