OK, so I'm stuck in Florida
for thew summer because of the virus. I'd normally go up to Chicago.
We'd love to do a couple weeklong cruises on the SW coast. We've done many of these, but this would be the first time in the summer.
Also, we much prefer to be at anchor
: I have a 400Ah Lifepo4
setup with Victron Multiplus 3000w-100A charger
I have 400 watts of solar
running through Victron mmpt controller.
Most nights at anchor
, the sea breeze is fine. But in the case of rain or scorching heat, the boss would like an A/C plan.
I have a Flagship Marine
16kBtu A/C unit that will run off the battery
bank (I've been testing for a few days). I also keep a Honda
2000 watt portable generator
on the rail as well as a spare 2000w Chinese knock off.
Here's the rub: I hate hate hate running the generator
, and I absolutely refuse to run it at night. I think it's generally just inconsiderate of other cruisers.
Now, I've been testing the A/C at the dock
running on the battery
. To simulate a sleeping situation, I close all vents except for the ones in the sleeping cabin
. My thermostat also has a remote
temp sensor that I installed in the sleeping cabin
Using this method, I can keep the cabin very comfortable (75 degrees f) with outside being about 87 and 90% humidity. Because I have the remote
temp sensor and a large A/C, the duty cycle is only 20% (10 minutes on and about 40 min off). The A/C draws about 140 amps. So 140*0.2*8 hours= 224 Ah for an overnight on the anchor running A/C.
That's a lot. But possible.
Now comes my question. I'll have to run the portable generator the next morning to make up that power. Even at a reasonable hour (11am, say), I still hate running the generator and would like to minimize the time. But the Victron charger
can only put in 100 amps at once. Even if I had a zillion watt generator it wouldn't matter.
But...if I got a second charger, like the Progressive Dynamics 60 amps lithium designed charger that Battleborn and Will Prowse recommend, I could start up the OTHER generator as well and hook it up to that charger while the Victron charges from the Honda
. So 2 generators and 2 chargers for a lot less charging
time. And 2 generators isn't that much louder than one.
Running 2 chargers at once at least in the heavy bulk phase of charging
seems like no problem to me (after all, that's what having 2 solar
Does anyone think this is insane? I only plan on doing it once in a while, as generally I'm fine with the sea breeze, etc. But in case of heat and rain it might be nice to have the A/C option.