Just wondering if anyone had any ideas as to if you can change to battery in them. Considering they cost a humungas amount of money for what You actually get. The van is over 4 years old so not any warranty. Haven’t really used it much but just went to try it and the light came on for a couple of minutes then nothing. Has anyone changed the battery and how do you take them apart. Any help appreciated. The interior light part of the lamp switches on and off so power is getting to it.