I've been experimenting running my 3A LED strips off battery power and the results are disappointing. I'm only getting a few minutes (< 10) out of a YSD-168 1800mAh lithium ion. How can I find the "C rating" of this battery? Is it something mainly dependent on battery chemistry (as this Dan's Data article I just remembered implies, search for "[space]C[space]" on the page) or something mainly dependent on manufacturing quality/technique? Macho RC battery packs always quote C-ratings, other battery types not so much. And it's difficult to google.
Also, what are typical maximum "discharge C ratings" of AA and AAA NiMH batteries?