How long is the lifespan of batteries with single products?
The lifespan of batteries is dependant on a lot of different factors. Most important is the quality of the batteries used. Tests by Franke have showed that there is a dramatic difference between brand name products and un-branded products. Brand name products had up to ten times lifespan. Another factor is the amount of usage. Less used batteries have a smaller lifespan, because of the self-discharge. Large temperature-differences and low temperatures also have a negative effect on the lifespan of the battery.
