If you are using the cable chargers, make sure you turn your Xbox on first. When attached with the charging cable you may keep playing your Xbox 360. If the pack is charging correctly then the cable or docking station light will glow red. When it turns green the pack is fully charged.

To clean the contacts use several dry cotton swabs to lightly scrub away dirt and dust. [1] X Research source

Taping up your battery pack is usually a temporary solution, and makes it difficult to replace dead batteries. [2] X Research source

Press and hold the Guide button to turn the controller on. Press and release the “connect” button on the front of your Xbox console. It is a small button underneath the “Open Disc Tray” button. Within 20 seconds, press the “Connect” button on your controller. It is on the top of the controller next to the battery pack. When the lights on your console stop blinking your controller should be attached.

Microwaves Cordless phones Wireless Routers Laptops[3] X Trustworthy Source Microsoft Support Technical support and product information from Microsoft. Go to source

Try placing your Xbox on the floor and connecting a controller from close range to make sure it can still connect without any interference.

This includes wired controllers, so detach those then try to reconnect. You can quickly disconnect controllers by removing the battery pack or restarting the Xbox.

Your console must be registered with Microsoft to be eligible for a replacement.

These tips come from several online communities and forums, not Microsoft directly.

If you still cannot connect controllers, you’ll need to discuss the problem with Microsoft and potentially replace your Xbox 360.