The 30GB uses a 580mAh battery, while the 60GB & 80GB, an 850mAh battery. Bigger batteries are now available in the market at 2000mAh, 3000mAh which offer extended playback time but they are thicker and needs HDD and blackplate replacements.

No. Not all click wheels are compatible with iPod Classic 5th Generation. When selecting click wheels, make sure it is specified for 5th/5.5th Gen. 5th Generation uses click wheel part numbers 821-0545-A for white and 632-0258-A for black.

We have a table of comparisons between these Order Numbers. Referring to the table, if you scroll down you will notice that the only difference between these two is their battery life for photos & videos. 5.5th has been enhanced for extended playback time on videos/photos.

No. Not all LCD screens are compatible with iPod Classic 5th Generation. When selecting LCD screen, make sure it is specified for 5th/5.5th Gen.

iPod Classic 5th/5.5 Generation 30GB uses 32MB of Random Access Memory (RAM) while 60GB and 80GB use 64MB RAM chips. A 32MB chip is rectangular in shape and a 64MB chip is bigger and square in shape.

The Digital-to-Analog Converter (DAC) chip on an iPod Classic 5th/5.5th Generation is the Wolfson WM8758, which is regarded by audiophiles as the best DAC on iPod. 5.5th Generation was the last model that uses Wolfson WM8758. Previous generations use Wolfson WM8975. 6th Generation and onwards use Cirrus Logic DAC chip.

iPod 5th Generation uses part number 820-1763-A and 820-1975-A for 5.5th Generation. Both logic boards are available in 32 MB & 64 MB of RAM. A 32MB model logic board is for 30GB and 64MB is for 60GB and 80GB.