House battery charging question, 2020 Hawk

Did you watch the video I provided above???

I did watch the video. Everything works in the camper when plugged into shore power (ie 12v interior LEDs). The house battery will not charge. I don't have access to a voltmeter until Monday. I want to see what is showing up at the battery.

I agree with John R,

 

If the fuse has blown twice there is a short or a bad connection or bad part somewhere in that circuit.  Time to get a voltmeter and shart checking the circuit for a wiring problem.

As I recall there is a reverse polarity protection fuse in the back of the DLS-30 but it is a PITA to get to.

If the connection to the battery is somehow reversagain ed that fuse will blow and your battery will not charge.

I recommend that you check the all the wiring in the path to the battery(s) and make sure positive is connected to positive and negative to negative all the way (this would include the path to the truck battery too).  Given there is a Blue Sea ACR in the path and not knowing what else (resettable fuses - on the order of 80 A - close to each battery hopefully), every connection should be checked.

 

Here is a link to the manual:

http://www.bestconve...a/DSLmanual.pdf

Edited by ckent323, 20 March 2023 - 06:30 AM.

Aaaand, I will say it again, get yourself a real State of Charge battery monitor.  The Victron Smart Shunt is small, bluetooth, and not too expensive.  That will tell you a LOT more than a voltmeter.

Thanks a ton everyone! How many amps is appropriate for the battery monitor? I'm all thumbs here.

how many amps? Not sure I understand your question.

The Victeon Smart Shunt has three Amp ratings. I was wondering which (500,1000 or 2000) is appropriate for a FWC?

What is the maximum current you want to be able to draw from your battery or force into it during charging? The largest battery banks in a FWC that i read about here are 200ah lithium, and the current limit for that size of 12 volt battery is going to be in the 300 amp ballpark. I have never read of anyone here using anything other than the 500 amp shunt.