Backup for Modem

Hey,

I need to build a Battery powered backup for my ADSL Router so I could use it when the power goes out.

I need some assistance regarding the equipment, How-to's -

what kind of rechargeable battery, voltage satbilizers do I need to build this setup?

Here are the details found on my modem's AC-DC adapter.

9.5v - 8500mA

Waiting for helpful reply :)

search the forum you'll find the answer of your problem.

^x2

For example this thread might be helpful: