Woot offers Sun Joe WA24C-LTE IONMAX Cordless Go-Anywhere Portable Sink/Shower Spray Washer Kit for $54.99 (reg. $149.97) free shipping with Amazon Prime. 

Product Description: 
Hose off on-the-go! Take a quick rinse on the road or mini wash wherever your travels take you with the new WA24C-LTE cordless portable spray washer from Sun Joe. Only the premium ion technology gives you room to roam, courtesy of the powerful, 24V Rechargeable lithium-ion battery. This perfectly portable sprayer is ideal for quick cleanups at the campsite, cabin, car, beach & boat, or anywhere power is at a premium. Fill up fast to carry up to 5 gallon of fresh, pond, or tap water & Wash away dirt & debris with the 38 Min runtime! The included spray attachment provides an on-the-go wash station wherever a quick rinse is needed. Simply twist wa24c-lte’s nozzle to adjust — from pinpoint jet stream to gentle fan spray. & when you need more power, just plug in & recharge the 24V battery.