Not sure on the batteries. I got it in July 2022, and threw in some rechargeable batteries, but have not had to charge them yet. Guess they last at least a year then.

I have the Wyze lock bolt and its pretty amazing.

• No cloud features at all, infact it has no network access. Its completely offline. You can only connect to it via bluetooth to add users etc.
• Can’t be picked because - it has no key hole at all
• Has a keypad to unlock via code, but
• It has a super fast fingerprint reader - just touch and you’re in. Only need the keypad if your fingers are wet and fingerprints fail to scan because of it (almost never)
• Reasonably priced