navhtc

I have 2003 Fleetwood Flair 31A and have been hooked up for months at a time. But I do take mine out every 4 to 6 weeks for maintenance runs of 45minutes. My batteries are Interstate and over 5 years old (flooded) I do check my batteries every month and only use distilled water. I also use a hydrometer about ever 6 months. So like others I believe converter is overcharging your batteries

Hello I purchased a Progressive EMS-PT30 about 5 Season ago. It is working fine, my question is how often should as Surge Protector be replaced. I'm sure there has to be a time frame when the effectiveness of an older unit will be of questionable use. Anyone know of a way to test one of these units without sending it back to manufacturer. Thanks