The battery keeps dying. It has just been replaced but leave it and dies

Hello, if you have a fully charged battery that tests good, and it continues to drain, you could have a parasitic draw. Testing must be performed to find out of a component is staying "live" when it should be shutting down after the vehicle is off. While monitoring draw from the battery, you remove various fuses and relays until the power drain drops off. Once you identify which removed fuse or relay makes the change, you troubleshoot that particular circuit and related components to find out the electrical component that is staying "live". Monitoring is needed as this can be an intermittent concern also.