02/11/2026
The clocks went back last week. This is the first full week of dark evenings, and the first question anyone asks about battery floodlights is how long they'll last.
Straight answers, from our own spec sheets:
CORE FLOOD 20K (26Ah): 2hrs at full output, 4hrs on medium, 6hrs on low
CORE FLOOD 20K (52Ah): 4hrs at full output, 8hrs on medium, 13hrs on low
CORE FLOOD PRO 24K: 7hrs at full output, 14hrs on medium, 22hrs on low
Most evening sessions don't need full output for the whole time. A 90 minute training slot, an evening schooling session or the last hour of a shift on site is well inside every unit in the range, with room to spare.
Pick the unit for the hours you actually need to cover, not the biggest number on the box.
https://corelighting.co.uk/area-lighting/core-flood-20k-flood-light/