Syco - that thing is scary looking. I bought a few of the same batteries off ebay a few months ago. They aren't rated like they say - they buy old stock of low capacity batteries and put a new wrapping on them and say they are 3800 to 5000 mAh. Did you check the coulomb count when you charged them?

I have since bought a thunderpower lipo to replace them. Just when I trust chinese crap I get burned again.