Duracell kept them going for a week and more. Let Us Help You. Needless to say I went with the two trip batteries and saved some money. Alison Dennis. Nor are my parents. I tested batteries about 20 years ago and came to the conclusion that the cheapo batteries from the cheap shops dollar stores in the US, Pound shops in the UK were better value. The company I was working for at the time had these in their satellite transponders and we could get at least a year out of 4 of them. Prev Next. I found this in flashlights and other items. The cheap batteries were good for two trips.