Ruck_and_Roll
Senior Member
I recently installed a new DC compressor fridge so I find myself using A LOT more DC power than I ever had before.
One thing I have noticed is that the voltage on BMV-712 is showing precipitous drops. (I have a 160 watt solar). I have a 125 ah Vmax AGM. Float/bulk set to battery mfg recommendations.
Today, I did a little bit of testing as I've noticed this when I've been camping the last few times. Will switch on the power and the battery monitor will read ~13.4. As I power on different items on my camper, the voltage drops, precipitously. Let's say I turn on all the lights, fan, and fridge (which in total is about a 10 amp/hour draw-calculated) the house voltage will within 5 minutes drop to 12.4-12.5. If I turn things off, the voltage climbs back up. I understand I am adding resistance to the circuit but Is this normal?
Going by SOC for AGM batteries, I'm already in the ~50% zone. This doesn't seem plausible and an accurate reading of my battery capacity.
Is this a battery monitor issue? Wiring? Battery itself? Or is this completely normal? Should I be monitoring my battery in another way? Or I am worrying about nothing?
Appreciate any insights.
Best,
Ruck
One thing I have noticed is that the voltage on BMV-712 is showing precipitous drops. (I have a 160 watt solar). I have a 125 ah Vmax AGM. Float/bulk set to battery mfg recommendations.
Today, I did a little bit of testing as I've noticed this when I've been camping the last few times. Will switch on the power and the battery monitor will read ~13.4. As I power on different items on my camper, the voltage drops, precipitously. Let's say I turn on all the lights, fan, and fridge (which in total is about a 10 amp/hour draw-calculated) the house voltage will within 5 minutes drop to 12.4-12.5. If I turn things off, the voltage climbs back up. I understand I am adding resistance to the circuit but Is this normal?
Going by SOC for AGM batteries, I'm already in the ~50% zone. This doesn't seem plausible and an accurate reading of my battery capacity.
Is this a battery monitor issue? Wiring? Battery itself? Or is this completely normal? Should I be monitoring my battery in another way? Or I am worrying about nothing?
Appreciate any insights.
Best,
Ruck