Why do I need a DC to DC charger?
I came to this group because of the tendency for truck campers to be more off grid oriented with knowledge about coach batteries. Unless your using Lithium, why would you need a DC to DC charger be...
Forum Discussion
towpro wrote:
...why would you need a DC to DC charger between truck and coach?
Kayteg1 wrote:
You don't.
.
.
.
On vehicles with smart charging system that gets complicated, but to my knowledge no US build truck to date has such system.
YOU ABSOLUTELY DO NEED A DC-DC CHARGER !
Prove it to yourself. Start your truck. Check the voltage at the battery. Immediately after starting it should >13.8V. Let the truck idle for about 10 minutes and check the voltage again. Probably <13.2V ! Have some one hold the engine at a high idle. I'll bet it is still <13.4 !
13.2V - 13.4V at your house battery bank will not let it discharge but it will NOT re-charge the house battery bank !
