More than once, my battery for my Pentax Optio W60 has died on a trip. Yesterday, with a dead battery and the original charger ‘borrowed’, I went looking for a replacement at a camera store. I found a charger unit for different Lithium batteries that not only plugs into the wall, but also the port in my truck. As I drove around on business, my battery recharged in no time. This will be nice in the field as well.