Forum Discussion
Vulcan_Rider
Aug 21, 2015Explorer
gotsmart wrote:
Try letting it set 4, 5, 6 months at a time without starting the engine.
2)I really don't think that 5 watts is enough to do any actual good.
It's enough.
Letting it sit for 6 months unattended is not good for ANY kind of vehicle.....so that is no surprise.
5 watts at 12 volts comes out to 4 tenths of an amp and that is maximum. Most of the time it probably will be much less.
And the battery itself looses some charge just sitting there; it's called "self discharge" and that gets worse as it gets older.
I hope it works out for you but my 50 years in the electronic industry leads me to believe otherwise. I personally would feel much more comfortable with an actual battery tender......or a 20 watt panel with an actual controller.
Please let us know how this works out for you.
About DIY Maintenance
RV projects you can tackle on your own with a few friendly pointers.4,397 PostsLatest Activity: Dec 04, 2025