lexio
feel the balance 3.65
have the same problem with a epever
I do too. Especially if there is another active charge source on the circuit.have the same problem with a epever
My old A-Frame camper had a 100W panel, ep2210 SC, 2ea 100AH AGM batteries.I do too. Especially if there is another active charge source on the circuit.
From time to time I do have to power-cycle the controller - XTRA3210N And yes, it goes back to normal voltage and charging. I don't really get it either. I have a DC switching breaker for the panel input so it's easy to disco the panels and then powercycle the controller.
Your system seems to be performing fine. The two parallel strings might be the cause of extra MPPT hunting.I am fairly new to running DC charge controller. Mine is the newer BougeRV 40 amp MPPT.
I am tempted to get a Victron, but this cheap charge controller ($149 USD) can accept 150 Volts, put out 40 amps into a 48 volt system, and has Blue Tooth setup and monitoring. A close matching Victron is about $400.
Maybe check your max voltage parameter? When I first switched to LifePO4 I set mine just above the boost since there is no temp compensation. I noticed that one controller would push another over the max, even when the batteries were low, and I thought that might be part of my panel voltage drop problem. After increasing to 14.5V the solar voltage drop seemed to be isolated to when the batteries were closer to full, but I was never sure.^^ Yup.
Last trip dry camping we woke to super bright and sunny skies, battery at about 55%, put the portable panels out and connected to second SCC - roof-top flat panels just starting to get solar gain - the other SCC. Portables were putting out fine, but the main controller for the rooftop panels would drift from 44V down to about 18V. Reset it, would work for a bit then drift down again. I just figured it was weak solar gain, was doing better later on - but seems the input from the other controller threw off the main one, never did get very good charging amps from it while they were both charging.
I finally pulled the portable panels off and connected them to my Delta Mini to recharge it. Sure works great there.
With direct sun overhead I should really be seeing 25A or more, maybe 350-375 watts, for 12V charging. But generally it's about half that - about 265 watts out of the 430 watts of panels rating - 2@215W in series. A little disappointing. I have a Victron Smart 100/30 in my amazon cart...they're $225 so I'm hedging.
see if i can test itFollowing up. I increased my max voltage parameter to 14.8. Boost is 14.2 and float is 13.8. Both clouds and sun and none of the 4 SCCs have dropped panels voltages down since making the change.
I don't have any BNs. They seem like a good unit. I have AN and XTRA. I recently got a 50A AN. I was surprised when I got it. Although it shares the same model number as the 10-40A AN, it is pretty big improvement, it is much more substantial, has replaceable fuse, voltage sense, dry contact, and parallel connect.Ive seen my 4215bn's go down to right at battery voltage with 24 volt and 12 battery banks when its VERY cloudy or raining. As soon as the weather improves they go back up to normal. They have never become "stuck" but again they have never messed up ever in all the years they have been running either.
The lowest I have used them with is 800 watts of panels so that might be why. They do very well in cloudy weather. It takes super heavy clouds or rain to have the drag down that low.