The batteries sit on a very small circuit board at the end of each tube ... I’m not sure how it works — perhaps there is a single LED somewhere in the tube and the Actiglo technology diffuses the ...

a light fiber within the tube that runs its entire length, and a light-emitting diode at one end for illuminating the fiber, though it is also suggested an LED could be placed at opposing ends.

With solid state LED light tubes, this fixture draws less than 0. ... Standard configuration includes a single emergency battery backup that is automatically recharged and kept in a ready state.