>>3218022>>3217994Most cameras have a small place on the side of the battery compartment that opens up to allow an electrical cord to be placed when the battery compartment hatch is closed. It is intended to be used with an external power supply that takes the place of the battery in the battery compartment. This power supply can be a battery, car adapter, solar unit, or AC adapter. It really depends on what you can find for it.
So, if you have all the gear you need, you can actually lug around a 100Ah SLA marine battery on a dolly cart if you really wanted it. lol