Battery drain down?

NovaTab

Doing trip tomorrow, have 2 agm batteries factory solar, with fridge and heat at nite (about 45-50 degrees) how will the state of charge hold up in the morning (24 hours)

Deb55

If your batteries are fully charged, you'll probably hold up just fine! A good battery monitor is really useful--we use the Victron. 

pthomas745

What fridge do you have?

Do you have the Victron app on your phone to monitor your battery status?

Here is a thread with some general info.  But...you have to do a little math:  how much battery can you use up from your AGMs?  How many amp hour does your fridge use (depends on the fridge, of course.)  This is all "knowable" in theory, and then you can compare your "theory" to actual experience.  (You'll be fine...you have plenty of battery for one night!)  Find your Victron app!  A thread:

https://tab-rv.vanillacommunity.com/discussion/11483/field-experience-with-dc-refrigerator-power-consumption-and-factory-solar#latest

NovaTab

I have the app sure just wanted to know how long before SOC drops 1 nite 2 nites etc

pthomas745

In the thread about fridge use, it shows the newer fridges (which fridge do you have) use about 25-30 amps a day.  Solar during the day should help to replace those amp hours.

How big is  your battery setup?  In Amp Hours?  If you didn't have a solar panel to replenish the batteries, the fridge numbers of amps used would just be subtracted from the number of amps in the battery.  It is just simple math. 

How big is your battery setup?