HP 15C CE ships with mediocre batteries

[Divasson]

Yes, but let's not forget that with decent batteries and normal use one should not be concerned for at least 10 months. It took 14 months to change the original set for me! You don't need to take the cable with you to the bathroom - there is some slack.

Another thing is if we succeed to create nice program sets - and then it makes sense to be able to load software pacs as needed.