I have a second Inspiron 8200 battery, can I use both batteries at the same time?
Yes. If you have two batteries you can use both at the same time. One in the front/right hand battery bay, and the other can go into the front/left hand module bay (by removing what ever you have installed in the module bay). If you know that you will need to run on battery power for an hour or so, it is better to use both batteries at the same time because deep cycling an Li-Ion battery has a negative impact on the longevity of the battery. It is better to discharge two batteries down to 50% power instead of running one battery down to 0% power. Another solution is to discharge one battery down to 50% and then hibernate and switch to your second battery.
