Hello. Here is my system: a classic 150, 4 Kyocera KC130 panels, a MS combiner box with breakers, a Wizbang Jr., and a circuit breaker. Set for 12v. I have had my system for many years, previously used to charge four 6v batteries. I replaced those with a new 100ah LifePo4 battery. I configured the Classic 150 to properly charge this new battery. All worked fine. As I do not use the battery much, the system was simply unused (for several months) until today when I intended to top off the battery. I now have no power to the 150.
With a voltmeter, I have verified 40v coming from my panels, through the combiner box (circuit breakers work and lightning arrestor energizes properly) to the 150. I checked the terminals at the 150 and see 40v coming in. However, I see no voltage heading out to the 150v circuit breaker.
I tried resetting the breakers, loosening, removing, reinserting, and tightening the wires at terminals and still no response from 150.
Any thoughts on what else I should try? Thank you for any thoughts.
Chargeless in Seattle.
If the Classic is on that means your batteries are delivering power to it.
If the Classic is not on that means no power from your battery.
Did you check voltage on the battery ? If not it probably shut off due to under voltage protection of a cell.
If that is the case you need to charge the battery with some other source to see if it will wake up . Once it wakes up and powers up the Classic, the Classic will start charging again.
But a bms in a battery can provide power out, but it can also turn off power in if it had a reason like over voltage on a cell, or if the battery is too cold and shut off charging due to that.
Do you have an app that you can see what is going on with your battery ?
If you have a generator and battery charger, try charging the battery is probably you best bet.
Not sure what kind of battery you have, or what your loads were when you were gone , how much charging it had , etc.
Larry
Thanks for the reply. Well -- I came back the controller this morning and realized that I had not reset the circuit breaker in my battery box. I did so and now all is working properly. Palm to forehead.
Thanks again.
Jonathan
Quote from: KK7PW on December 10, 2025, 10:44:18 AMThanks for the reply. Well -- I came back the controller this morning and realized that I had not reset the circuit breaker in my battery box. I did so and now all is working properly. Palm to forehead.
Thanks again.
Jonathan
We all love easy fixes !
Larry