This 5-pack of TNSO Extra Long Nylon Braided Cables, in 3, 6 and 10 foot lengths came from Amazon UK. They cost £10.99. I do not recommend these cables.
If you really must, you can buy this from Amazon UK - This link contains an amazon referral link which helps me to buy more power banks to test.
In the box
They came in a resealable plastic bag inside an envelope. The bag contains 2 x 3 foot cables, 2 x 6 foot cables and 1 x 10 foot cable.
- Cable length: 2 x 3ft, 2 x 6ft, 1 x 10ft
Minimal strain relief. The 3 foot cable drops 0.6V at 2.1A or 12% which is very bad for a purchased cable. The 6 foot cable drops 1 volt or 20%. The other pair of 3 and 6 foot cables show the same result. The 10 foot cable drops 1.25V or 25%. This is very poor performance and suggests a power conductor that’s too thin for high current charging.