I purchased the KickAss Lithium Powered portable shower from Australia Direct. Firstly, I have to say that the ordering process was simple and painless and the delivery was prompt. Australia Direct's Service is excellent. I have owned and used a multitude of camp showers over many years and I have to say that this compact device absolutely beats them all. No cables, just a neat little bag with a really well built pump. flexible hose and shower head. Just pop the pump unit into the water and turn it on .... instant shower. I have not yet experienced any case where the battery has become exhausted so I can't say how long the battery would last. Certainly charging it in your car as you travel will mean that it is always ready. I actually bought two of these units, one for the caravan and one to keep in the 4x4.