you need to look for a battery with a similar plug (jst etc...) 1300mah and 7 cell.
Try bphobbies.com allerc.com and towerhobbies.com
Could be any brushed motor. 280- 370
Buy a cheap $15.00 power inverter. (dc to ac converter) My 175 watt one will power a couple light bulbs, a hot glue gun, box fan on low speed etc... good for the field and nice when the power goes out in the summer (box fan)
P.S. bring a small extention cord so you can charge out of the hot car.
Check out hcaa0206 I would call these guy's for motor question etc...Probably the importers.