Will someone please explain to me how the heck a lithium battery can test 13.37 volts with a multimeter . . . and then 2 minutes later when connected to my system and my EPEVER Tracer 4215BN cause a low battery alarm and read 10.4 volts?
(1) For four straight days, I charged my 12-volt 150Ah LiFePO4 battery using the 10 amp battery charger that came with it. (I cannot get it to charge using with my Tracer controller.)
(2) It was charged to 13.36 volts two days ago. This morning, after two more days of charging, it added 0.01 to the charge, to 13.37 volts. All testing with my multimeter. Obviously, the battery is not going to charge to a higher voltage.
(3) So as a test, I connected the battery to my system with my Tracer controller. IMMEDIATELY there was an alarm from my inverter (low battery). The MT50 remote meter for the Tracer controller showed 9.1 volts, then after 4-5 seconds it read 9.7 volts, and a few seconds later it increased to 10.4 volts and stabilized there. To silence the alarm, I turned on the solar panels and the Tracer immediately signaled a full battery and charged at a full battery low 1-2 amp rate.
(4) After 7 hours of charging in bright sun, I turned off the solar panels and the MT50 meter again read 10.4 volts!
(5) I then, again, disconnected the battery completely from the system and tested it with my multimeter. It read 13.36 volts.
How is this possible?
What is happening?
(1) For four straight days, I charged my 12-volt 150Ah LiFePO4 battery using the 10 amp battery charger that came with it. (I cannot get it to charge using with my Tracer controller.)
(2) It was charged to 13.36 volts two days ago. This morning, after two more days of charging, it added 0.01 to the charge, to 13.37 volts. All testing with my multimeter. Obviously, the battery is not going to charge to a higher voltage.
(3) So as a test, I connected the battery to my system with my Tracer controller. IMMEDIATELY there was an alarm from my inverter (low battery). The MT50 remote meter for the Tracer controller showed 9.1 volts, then after 4-5 seconds it read 9.7 volts, and a few seconds later it increased to 10.4 volts and stabilized there. To silence the alarm, I turned on the solar panels and the Tracer immediately signaled a full battery and charged at a full battery low 1-2 amp rate.
(4) After 7 hours of charging in bright sun, I turned off the solar panels and the MT50 meter again read 10.4 volts!
(5) I then, again, disconnected the battery completely from the system and tested it with my multimeter. It read 13.36 volts.
How is this possible?
What is happening?