Bit of a tech problem here. You see, I use a laptop, and I must admit, while it's not very fast, being an old model, it's quite convinient. Anyway, I like being able to run it without the cord. That way I may carry it with me, on. However, when my battery reaches around 40-45% left, it shuts off, mysteriously. Anyone know what might cause something like that? 😛