No, but three packs should allow you to run quite a bit.
Run packs 1 for ~20 min
When done, start charging pack 1
Run pack 2 for ~20 min
When done, start charging pack 2
Pack 1 is ~33% charged.
Run pack 3 for ~20 min
When done, start charging pack 3
Pack 1 is ~66% done
Pack 2 is ~33% done
Take a ~20-30 min break and start the cycle again. Of course, this assumes you have three chargers going at once.
