I have a Bogart TM 2030 battery monitor, 2x Trojan T105 batteries (1 year old) and a PD 9260 intelli power charger. I have the original OEM converter/charger still but I keep it shut off at the breaker. It’s all been working fine for over a year but just lately the SOC reported on the monitor won’t go above 96% even when I’m plugged in to shore power for days. Like right now I’ve been on shore power for 3 days and the monitor reports 12.8v, -0.2 amps (phantom loads) and SOC 96%. It doesn’t look like any charging is going on. I don’t know if the charger is not working correctly, the batteries are full but the monitor is reporting wrong or the batteries just won’t accept the charge they used to.
Any ideas on what’s going on? or how to diagnose what’s going on?