After my camcorder battery swelled up and shorted, I needed a replacement. But don’t do what I did and try to save a couple bucks buying a cheap aftermarket battery for the Samsung SC-HMX10C camcorder. I found an aftermarket battery on ebay that boasted 1200 mAh (the original one is rated at 850 mAh). After getting two different ones, neither one would last more than a few minutes before crapping out. So then I found the original IA-BP85ST from Samsung and I finally have a battery that works now.
I got it at Amazon for $22.22 with free shipping: