The product works very well and gives effective guidance for particular sort rechargeable batteries discharge level to load them together. Discharged batteries appeared on a computer screen and testing I came to realize that it was wrong and due to a loose connection or bad radio connection. So I saved the value of two alkaline batteries which reimburses a large part of the price of the object ... While the device's volume makes it a little cumbersome in a drawer. Other fashion foot models are more compact slide. Some will say that it is like that loses less easily ...