Inside a rather good USB rechargeable head-lamp from eBay.

Описание к видео Inside a rather good USB rechargeable head-lamp from eBay.

I'm always a bit sceptical of how good these cheap eBay lights are going to be, but this one is surprisingly good.

I can guess that there are probably going to be some manufacturers who skimp on the cell size though. But upgrading it is not complex.

A quick test of charge current shows 250mA so about 5 hours for a full charge.
Even a quick charge will get useful run time.

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