PondXpert TripleAction 1600 Solar Battery Control Box

You can use it from up to 8 hours to even 12 on a full charge from the mains and in pure sun, but will switch off at every 4 hours, but you just keep resetting it for another four hours until the battery is completely dead, I don't use the UVC light cause you only get 3 hours pump use if you use that with it, 👍🏻