You can run them in parallel but don't expect much run time out of them. 1000 mAh is pretty low for capacity. To figure the run time
Originally Posted by Novakane
(Volts* (mAhr/1000))/bulb wattage = run time (in hours)
Your maximum possible run time would be 36 minutes. And you'd probably not reach that. You could band together 4 packs (2 ea in parallel and then 2 of those in series) to get to 2 Ahr but that will only give you about an hour. There are better, higher capacity packs out there. Look at Battery Space. You could even boost the power to 14.4 V and get a high light output.