Surveyor hybrid tt. 5 years, no problems. Tonight, the alarm went off, for low/no power. The battery is connected and connected to shore power. Turning a light on, made the alarm stop, but so very dim. I checked my power cord, it may have been not plugged in well. I cleaned battery terminals. Battery water fluid is fine. So with everything plugged in fine, the microwave clock was on, the power light on the fridge started to glow, then after about 5 minutes, the low power alarm would come back on. Again, trying to turn on a light would kill the alarm, but no real light, just super dim one.
Thoughts? Did I drain the battery to low to get a charge from the 110? Or is the converter dead?