The manual is not good

A device that you unpack and simply connects, only without mains plug to test what is wrong with the battery, then to invite the power plug, all the rest makes the device. It has many LED lights that change while charging the battery to charge state, allowing a choice of switch yet certain Ladezüglen. But if you want to read about it in the manual, you will be slain with the icon can not be found on the device. So as a wrote an instruction manual for a charger .....!. Especially tell me none of the LED's (not the Error Indicator) is defective the battery and charging is not worthwhile. This unit only one red LED is which says empty, you must now test himself whether one brings the battery back to life. 3x motorcycle batteries have managed at me I could replace after 5 charging attempts. With all the red LED lit but empty never ERROR though the battery was death. The device is available in all the testing I have read, have been especially but overrated by GTÜ something, but it does what it is supposed to match the despite a poor manual for domestic use and the price. But it is not the high-flyer. So again I would still 50 drauflegen and probably buy a better device. All labels on the product are in English!