theoldwizard1 wrote:
burningman wrote:
If the camper batteries are connected via heavy cables directly to the truck batteries, they will charge as much as the truck batteries do.
AND THAT IS EXACTLY THE POINT !
The Smart Charging systems in today's vehicles vehicle know pretty accurately how much energy to required to recharge after the engine starts. That is what is sent to the vehicle battery.
THIS IS INSUFFICIENT TO RE-CHARGE A HOUSE BATTERY BANK !
burningman wrote:
It’s a false statement to say that you must have 13.8V to replace ANY energy into the batteries.
A fully charges 6 cell "12V" lead acid battery has 2.2V per cell or 13.2V. You are not going to ADD energy until you exceed that voltage. 2.3V per cell is 13.8V.
Now I'm confused again , which doesn't take much any more . If 13.2v is a fully charged 12v battery then that or anything above will eventually fully charge the battery . I just did a quick check on mine and after start up the truck batteries are showing 14.7v and the camper batteries ,two T-105 ,are showing 14.2v with 4ga from truck to camper , so it doesn't appear that my truck has smart charging .
