It’s aupposed to hold a charge for a year, but this one is held by magnets so easy to take down and recharge if needed. Uses a USBC cable for that.
My 29RL doesn’t have any lights in the closet, so finding a 12v always on circuit would have required running wiring through the wall or into the basement. Chose this route for ease of install, it was peel and stick. Open the cabinet and it lights up nicely.