YES. While recharging your battery, you can still use the manual button on your Door Keeper motor to lock and unlock your door. You can also use your metal keys.
However, if the battery is dead or missing from the engine block, you will not be able to remotely lock and unlock your door, receive your notifications and access your lock history in real time.
We advise you to charge the battery overnight and do not touch your lock before reinserting the charged battery in order to preserve the stop settings.