Among the few useful classic products that have been fitted with a USB port is the common AA battery. The eco usbcell has a built-in accumulator with 1050 mAH, which is fully charged in just under two hours. Thanks to the use of a lithium polymer as the battery chemical, up to 500 charging cycles are possible with no loss of capacity.
By way of comparison, conventional AA accumulators no longer work after around 300 charging cycles – and with power of between 1,200 and 1.500 mAh they are only marginally stronger than the eco usbcell.
In 2018, more than 50,000 tons of batteries were sold in Germany, of which just under 20,000 tons were collected and almost 17,000 tons were recycled. This means that around 33,000 tons of battery waste – which should be classified as hazardous waste – is created in Germany alone each year.
Products like the eco usbcell could therefore prove very useful in helping to reduce the burden on the environment. http://www.ecousbcell.com/index.html