If your charger has frayed wires near the plug, it’s fairly simple to repair. Using scissors or a sharp blade, carefully cut away the plastic casing from the frayed end of the charger. Be careful not to cut any of the wires inside the casing., Using your scissors or blade, make a clean cut right through the frayed area., Strip away about an inch (if possible) of the protective rubber casing. This will expose the three wires inside the cable.
 This will expose the metal filaments that make the wire. Make sure you don't sever these metal filaments while stripping the protective casing.


Do this on both ends.
 Match the colors of the protective casing and twist the matching wires together.
 Cover the exposed metal for each connection. This will prevent the exposed wires from touching each other and shorting the connection.
 This will help keep the wires in place and secure.
 You can find this tubing at electronic supply stores like Radio Shack, or use a rubber replacement.
Cut the casing away from the charging plug.
Cut the cable where it is broken.
Strip away the protective rubber from both ends of the cut.
Strip away the protective casing for each of the wires.
Twist together the corresponding wires for the cable and plug.
Wrap each individual connection in electrical tape.
Wrap the three wires together with electrical tape.
Slide heat-shrink tubing over the new connection.
{"src": "wikihow-all_test", "title": "How to Charge Your iPhone without a Charging Block2"}