Helmet cam power supply

[backofbeyond]

You can use the lithium battery packs that litter Amazon to run the camera - I've been using a large one (about 30k mAh and physically about thin paperback book size) for work running a video camera all day without any issues and also using a smaller one (10k) to run the sat-nav on my 6v bike.

If you've got a tank bag or somewhere to put the battery pack it's an easy option but it doesn't take that much effort to Pooratech a semi permanent solution. For my 12v CCM I stripped down a cheap cigar lighter style plug-in car charger, rebuilt the electronics into a small plastic box and wired it, via a switch + fuse to the bike battery.

It was originally intended to power the sat nav so the output was a mini usb cable but I've recently adapted it to power my Chinese GoPro copy as well as my usb tent light. With a bit of care over "bike proofing" the electronics (hot melt glue on the circuit board for vibration support + silicon sealant on cable exits, box seals etc) it's worked fault free for 6-7 years.

I've soldered up a couple of others from scratch using voltage regulators + support electronics (including the box they're only about £5 to do) but the car style ones are often pence in a charity shop or nothing from the back of a cupboard at home.