Ups

Hi, I am attaching a bloack diagram illustrating how to wire a UPS in order to be used as a back-up power supply. I would be really greatful If someone can check it for me. I will be not be doing any practical work its jst an assignment.

Why attach a Word document which can't be read by those who don't have Word?

Why not post a PNG which everyone can read?

Where's the battery charger?

The battery will leak charge if it's not used for a long length of time and will be useless when it's required.