These 'other style' LED lights are popping up everywhere you look, especially on eBay were most of the LED Video lights start out. At first glance the style is similar to the Comer light, but it's not the same, and it's not even half the price of even the 'generic Comer'. The above video review from Vimeo member Olivia shows some sample use with the LED-5001 (or sometimes called VL5001). Positioned over the GH2 you can see it's relative size, and it doesn't look very tiny. From the review, it looks like it has decent overall light output, but a little spotty without the diffuser.
The LED-5001 video light kit has (3) LED's, comes with a folding Diffuser, Tungsten Filter, and two barn doors. Nice to have all those filters and gels in one place rather than thrown in your bag. The LED kit also comes with a battery charger and Sony compatible 7.2V rechargeable Lithium Battery - and yes it's also Dimmable. Run time? Not sure, but looks like you can still mount Sony's double sized 7.2V battery as opposed to the smaller one provided with the kit. [Thanks Olivia]
Dimmable Video LED Light Lithium battery with Charger 4 Leaf Barndoor For on Camera DSLR Video