USB Charging question.

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Does anyone know how to find a mains USB charger that doesn't charge your device as fast as possible?

I have some new USB-chargeable bike lights. I was warned to charge them through via my computer rather than a phone charger, as charging too quickly can damage them. Thing is, I do not have a desk job. I rarely if ever have time during the week to keep my computer switched on for the 4 hours it would take to charge the lights. (Especially as it's a laptop, and switches itself off after half an hour!) I have been trying to locate a USB charger or charging hub that plugs into the wall, but which does not blast devices with more current than they can handle.

I'm pretty sure such a thing exists, but I can not work out the magic sequence of search terms required to identify it. Is anyone more tech-savvy out there able to help, please?

Suggest that you look for a mains powered USB hub preferably 2.0 spec rather than 3 that way they push out less current. As a side note you can use it for your laptop too.

Thank you- that is already a substantial increase on my knowledge! I've been driven up the wall by search results that assume "shurely you must mean MORE powerful, not less". Hopefully this is a way round that.

Sounds like a bunch of tosh to me. A USB powered device will draw the amount of current that it needs, not the other way round. A USB charger can't "charge too fast" since the amount of current draw is determined by the appliance not the charger. All domestic battery chargers and USB devices have regulators.

For the same reason a domestic power point is 240 volts at 10 amps. If you plug a 1200 watt toaster in it's going to draw 5 amps, the power point isn't going to stuff 10 amps through the filament and blow it out.