Nov-30-2017 10:56 PM
Dec-04-2017 10:07 AM
Dec-04-2017 10:07 AM
Dec-04-2017 10:00 AM
Dec-04-2017 08:27 AM
Dec-04-2017 08:17 AM
Grit dog wrote:sch911 wrote:
The Ram factory remote start system only runs for 15 minutes. How is that expected to charge the batteries?
Not discounting the other 4 pages of discussion, the second post in the thread here sums it up. How much battery charge would you expect to get in that short term anyway?
As well, unless you ran a dedicated heavier gauge charging circuit to the camper batteries, you can’t pull a lot of amps.
Dec-04-2017 08:14 AM
sch911 wrote:
The Ram factory remote start system only runs for 15 minutes. How is that expected to charge the batteries?
Dec-04-2017 07:51 AM
theoldwizard1 wrote:Kayteg1 wrote:
Even with my mechanical education I know that when alternator will put 14V into trailer wire, you will have full 14V on other end unless you start putting load on it.
When I drive for several hr with fridge on propane, my TC batteries will show 14.2V.
What is the make, model and year of your truck ?
I was an automotive engineer for 31 years. Cars and light trucks built since about 2000 (?) simply do NOT put out that much voltage for more than a minute or two after start up. Shortly after startup, they may put out that much voltage, but only at high idle (2000 RPM).
If an alternator put out 14.2 volts constantly, your battery would boil dry.
Dec-03-2017 09:17 PM
Bedlam wrote:
I don't look at the truck as the primary charging source for house batteries, but it will maintain them and keep them from draining to an unsafe level under load. To get a full charge on the battery, you need a smarter charger that is sensing parameters closer to the battery. Depending on the battery chemistry, 80 percent charge may be good enough as long as you do not discharge bellow the battery threshold.
Dec-03-2017 09:15 PM
Kayteg1 wrote:
Even with my mechanical education I know that when alternator will put 14V into trailer wire, you will have full 14V on other end unless you start putting load on it.
When I drive for several hr with fridge on propane, my TC batteries will show 14.2V.
Dec-03-2017 09:58 AM
Dec-03-2017 09:54 AM
Dec-03-2017 04:58 AM
theoldwizard1 wrote:
A car/truck alternator is the WRONG TOOL to recharge house batteries, especially deep discharge batteries.. PERIOD !!!
Dec-02-2017 08:28 PM
Dec-02-2017 08:10 PM
Z-Peller wrote:
Not entirely true. On my GM trucks back to 2009, the owners manual says driving in towhaul or turning on headlights will send full charge to trailer plug regardless of truck battery fully charged regulator issue.
If charging a remote (non-vehicle) battery, press the tow/haul mode button located at the end of the shift lever. This will boost the vehicle system voltage and properly charge the battery. If the trailer is too light for tow/haul mode, turn on the headlamps as a second way to boost the vehicle system and charge the battery (in the trailer).
The vehicle has Electric Power Management (EPM) that estimates the battery’s temperature and state of charge. It then adjusts the voltage for best performance and extended life of the battery.
When the battery’s state of charge is low, the voltage is raised slightly to quickly bring the charge back up. When the state of charge is high, the voltage is lowered slightly to prevent overcharging. If the vehicle has a voltmeter gauge or a voltage display on the Driver Information Center (DIC), you may see the voltage move up or down. This is normal.