What is the factory mAh on a 5th Generation iPod Classic?

Hello buck2825,

Depends on what size hard drive you have. Here are the default battery capacties for each.

80 GB - 600 mAh

60 GB - 600 mAh

30 GB - 400 mAh

Each of these iPod models can actually handle a slightly higher capacity than what they were originally designed with. Here is a good site to purchase a replacement battery from.

http://www.ipodbatterydepot.com/video.asp

Hope this helps.

B-rock