Recently the average battery life after a full charge on my ND2325 has diminished significantly. I suspected that the internal battery is giving up on me. So I opened up the casing and to my surprise, the battery pack is seriously bloated with air!

I use an external battery pack often. Therefore the issue of the battery life is not a big issue for me. However looking at the bulging battery, I am concerned that it will burst and cause a fire (and in the process destroy all the data in my hard disk!)

So my question is, should the internal battery be changed, even though I am using the external battery more often?