The 1900-0035 from Ansmann is a black colour coin cell tester. It is a compact and handy coin cell tester for alkaline and lithium coin cells. With this coin cell tester user can always check the capacity of coin cells. This handy device fits in any pocket so user can always have it close to hand to test cells. Place the coin cell on the tester and it automatically detects the voltage (alkaline and lithium), shown by the relevant LED. The remaining capacity is displayed by 5 LEDs. The current capacity of cell is tested under load and is shown via the LEDs in red, orange or green. User can always check how full or empty cells and they can also check precisely when batteries can still be used and when they must be replaced.