I would research other companies offering batteries as I have not been impressed with the service from AGL on the two faults I have had in the last 4 months.
There is a "dedicated" service phone number to leave a message on that never gets responded to.
There is an email address that never gets answered.
If you ring and speak to a person they don't know how to deal with the issue and end up transferring you to the solar resolutions team and that is the phone number that lets you leave a message that never gets responded to.
An endless loop of useless, time wasting, cost cutting technology that serves no purpose other than to allow them to advertise that they have a service team, when in actual fact it is just and area to make a recording and move you on.
Not good enough by any means.