Er...keynsham1 wrote:13watts roughly equals 1amp draw on your battery so 110 amphour battery will last for 55 days if the light is on for two hours a night and the battery is never charged. Who is ever likely to do that? I rest my case!
During winter camping season, my webasto is on all day, the lights are on a lot longer, the smartphone is charging, and the CD player is on.
So I would say it is a simple decision for me, 1 amp is a heater ... Or a tube.