[jokersall]

Are there any portable battery pacts that can be used with wiper motors for up to 6 maybe 7 hours?

 

[gadget-evilusions]

Car battery would be the easiest.

 

[jokersall]

normally I'd agree but I don't see how a car battery would be that mobile. every time I move I'd have to pick up the battery and run with it.

 

[gadget-evilusions]

7 hours at full load, would be a minimum of a 35 amp hour battery. Is the motor running 100% of the time, and what is the draw on a power supply for what your driving?

 

[J-Man]

normally I'd agree but I don't see how a car battery would be that mobile. every time I move I'd have to pick up the battery and run with it.

You ask for a mobile power supply, not one that you could do the 100 yard dash with.
Wiper motors take a lot of current to operate, you may get away with a 12V battery from a cordless drill for awhile.