[twindman]

Sort of long story. I have 2 6V batteries about 5 years old. They were about a quart low but still above the plates. Added water. Plugged in to house. House read around 110 volts. Converter was drawing about 6 amp. When I turned on the water heater, the surge protecter said low voltage - 100 V. I check outlets and it was in fact 100 v. Oh, the heater draws 7 amp. I was hooked up with my 25 foot 50A cord to a 25 ft 30A cord to a 100 ft 15A extension cord.
So 1) why the drop in voltage. Too long a run of cords?
2) It also took the converter 8-10 hours before it stopped running. I do have the extra thing on the converter to do a trickle charge. Are my batteries going bad?
Thanks for answers.