I’ve definitely had a shoot almost go dark when a backup battery ran out, and it’s a lesson I never forget. My go‑to power plan is three‑tiered: first, I bring a high‑capacity, fast‑charge power bank for my phone and lights; second, I have a portable generator on standby for the camera and rigging, just in case the lights need a boost; third, I always scout a nearby charging station or a solar panel setup for those last‑minute emergencies. It’s all about having a backup for a backup and keeping the crew focused on the scene, not the outlet.