Is it Ok to Leave Rechargable Batteries in while using adapt

is it necessary to take out the rechargables when you use the adapter, cause it would be cumbersome if you had to keep taking them out and putting them back in when you are switching your method of use through out the day you know over here you've got access to an outlet and somewhere else you don't etc...

not a problem, you can also connect and disconnect the external supply while the mpc is powered up without problem