So I have a reasonably nice light, bought a few years ago. However I haven’t used it in a while and now the battery won’t take on any charge. I sent it off to be checked and have been quoted ~£50 for a new battery. That’s more than I wish to spend, I don’t do much night riding and now I have an excuse not to do any.
However, I’m just wondering has anybody tried wiring a MTB light up to work with a USB powerbank? As far as I can see I could get something of reasonable capacity for £20. I’ve seen you can now buy those CREE XML T6 kind of lights with a USB lead, so it’s obviously possible, but how hard would it be to change the light I already have to a USB lead? And how are people’s experiences powering lights from a USB powerbank? Can you get full brightness? I have a GCSE in technology and a friend with a soldering iron.. and more time than money… 🙃