I seem to wear out micro USB cables that I use with my phone on a regular basis (as in they either stop working or work intermittently). The ones that I use as home seem to last the longest, but the ones I use in my car or to connect a powerbank to my phone while I'm walking about seem to die somewhere between 2 and 6 months. I'm assuming that they're being constently flexed from my movement while I'm walking around (powerbank in my pocket and phone in my hand while playing Pokemon Go or Munzee).

I've tried both normal PVC coated cables and braided cables, makes no difference. I've read that braided are meant to be better but I can't really see how the outer coating can protect the inner wires from flexing. I also try to loosly coil the cables when not in use rather than tightly coil them, but this doesn't seem to help much.

Last year at the Big Boys Toys show there was a stand selling USB cables that came with a lifetime guarantee. I spoke to the lady on the stand and she assured me that if one of their cables broke then they'd replace it for free. I very nearly bought one but they were pretty expensive (I think something like $30 each or two for $50) and I thought it would be easy for them to just disappear and make the guarantee worthless. I've tried Googling them to find them again but the only outfit I can find is Lifetime of Power which might have been them.

Can anyone recommend a good strong cable for my needs? Mainly just for charging but would be a bonus if it did data as well.