We haven't heard any tales of exploding batteries in quite some time, and we're sure that's in large part thanks to proactive battery recalls like the one HP has been running since about this time last year. However, it's a little disconcerting that this recall keeps getting expanded. For the second time a new group of laptops are being added to the pile, entries from the Pavilion, Compaq Presario, and other lines manufactured between August of 2007 and May of 2008. We have the complete chart included below. If you're included the bad news is that your aging laptop could explode and wipe out your entire neighborhood at any moment. But, the good news is... free replacement battery!