Aw... now that's just mean. He's only asking if... er... wait... he didn't ask a question... Okay fine, it wasn't that mean. Could you clarify, "Nonsense Man?"
Oh, you just continued your question from the subject of the thread. I got it now.
I can't think of any batteries of the top of my head, but if you google or eBay it, hopefully you might find something/
Radio Shack has a simular pack with a higher capacity. I've seen an RC battery pack that had LEDs for status, but I can't recall the model, or who made it.
i was going to design one once, but i never got around to it... TI makes a chip called the BQ2012, if you can solder surface-mount, pick up a few and try it yourself. the circuit is pretty simple.