I agree that this is a really effective method, but there is a much better way. It is much easier to get special heat shrinks that are easier to use, and they also look better than duct tape. You will have no problem installing them only if you have a hair dryer or can handle the lighter with care. Also, you can use two heat shrinks, and between them install a spring from a ballpoint pen. This will increase the operating time of your cable for a long time ... And also the most important advice - use your charger carefully! My charger is from iphone 7plus. It is still in good condition, as it is mainly located at home near the outlet. Although recently there were certain problems with my wife's charger ... We were on vacation and connected her charger to the generator, but for some reason it burned out .... As a result, it turned out that the capacitor in the generator had to be replaced .. I quickly found the capacitor from https://www.hv-caps.com/High_Voltage_Diode/2019/1212/3343.html, but I had to buy a new charger ...