If you need longer battery life get a camera that can be plugged in and charge while it's being used. My camera has a waterproof case. To connect the charger I have to take it out of the case and then there's nothing to mount it to the handlebars.
Another camera I saw was "water resistant". That one has no case. You just bolt the camera to the handlebar and then you can plug in the USB charger while it's running.
I use this battery to power the led bar and tail lights on my bike. And with the inverter I can charge my phone, Bluetooth, even a laptop.
This is an old AGM battery. It's 12 amp hours and weighs about 8 pounds. The new lithium batteries you can get the same number of usable amps with 1/4 the weight.
