This battery holder for 18650 batteries I bought for the purpose of our battery vacuum cleaner, which have hitherto been operated with 3 or 4 nickel-cadmium batteries a 1.2 V convert. The Li-Ion batteries have 18650 as the series NC batteries approximately 3.6V nominal voltage, but instead of just 1.3A here 2.6 Ah. Our battery vacuum cleaner, distributed about a dozen in the whole house, to remove small insects, work outstanding. However, the batteries are now not only out of date, but also defective. The battery boxes can be installed easily in space. However, I had to replace the much too thin for high current cables, since the internal resistance was too high. Because the manufacturers of these battery cases should be thinking in a new batch and solder equal thicker cables. Who like me is hobby craftsmen, likes to tinker and understand, among other things to deal with soldering iron, should strike here, because in the electrical retailing there they do not seem to buy. Because of the high shipping costs to an order worth probably only from 5 pieces. Edgar Redlich, Großholbach
