15 minutos - 1 hora
Battery would not stay charged for any meaningful length of time.
I used the instructions per the iFixit repair manul. The battery replacement went well except for one step:
iPod originial repair
iPod 4th generation or photo
Recommend the following be added to step 8:
"The ribbon is conntected to a connector which is connected to another connecter attached to the circuit board. Be careful not to pull up so that both connectors are detached from the circuit board. "
I was successful in changing the battery and the iPod worked as advertised after I charged up the new battery. Thanks
See recommendation above.