PowerDown supports AWS RDS databases and can schedule and power up and down RDS databases as required.
AWS RDS Time limits
Amazon RDS imposes a maximum continuous power down time limit of 7 days for RDS databases, after that AWS will terminate the database. So ensure that you have some powered up time each week to prevent the termination by AWS.
Warm Up Time
Starting an RDS database can take several minutes before it is fully available. Servers and containers that depend on an RDS database will need to be able to handle this unavailability while the database warms up.
Amazon Aurora Database
Amazon Aurora is not supported at this time. AWS does not make it possible to restart or stop and AWS Aurora databases at this time.