1) What's the difference between the new "Direct" ROAR-approved 50C bullet pack, and the older one? The descriptions are exactly the same.
2) I have a 5000/40c bullet pack I bought several months ago. It worked great... until I hooked up the battery wires backwards. There was a BIG spark, and then my ESC wouldn't turned on. I thought the ESC was fried, so I wired up a spare, then found out the battery wasn't putting out juice. Hooking it up to my charger, one cell read full, the other zero. Turns out the ESC is fine (phew!). Someone mentioned there might be a fuse in the battery... is there any chance if I try and open the case I might be able to fix it?