Thank you for viewing. No need to confirm beforehand, instant purchase is OK. First come, first served, so please refrain from price negotiations. This is a dedicated rechargeable battery for the SwitchBot Lock Pro. I am selling it because I no longer use the lock itself. I have been using it for about a year, and it works normally. Only two batteries are included, and the instruction manual and other accessories are not included, so please understand. Please consider purchasing only if you can accept that it is a used item.