I... I use two Group 31 105 AH marine batteries and a Guest 2 bank battery tender. I just plug it into 110 and it keeps the batteries in top condition - always ready to go. Deep draw batteries are best charged at low amperage (usually about 2 amps) and the Guest does a great job at intelligent charging and maintaining the batteries. These are tiny - about 4" X 6" X 1" and are easily mounted near the battery. They are available at marine stores - West Marine is a good source.
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Mike, I Googled "Guest Battery Tender" and only got other brands. Can you provide a link?
Do you think this is a worthwhile investment if you have an Intellipower 9200? It seems to have a fairly sophisticated 3-stage charging curve, but I leave the Airstream plugged in througout the winter and have noticed I do need to water the batteries at least once a year (not just maintenance, but significant water).
Do you think this is a worthwhile investment if you have an Intellipower 9200? It seems to have a fairly sophisticated 3-stage charging curve, but I leave the Airstream plugged in througout the winter and have noticed I do need to water the batteries at least once a year (not just maintenance, but significant water).
Zep
Hey Zep,
This is the one I use all the time. The 3-stage WFCO is nice, but the BatteryMinder is BETTER in that you can set the charge rate at 2/4/8 amps, set the type of battery, as in gell, liquid or AGM, and it has a neat auto de-sulphating feature that I partiularly like, and it give you an idea of the battery's condition.
Plus, you can get them for around $100 from Northern Tool (but don't tell anyone I told you........it's supposed to be a secret!)
Do you think this is a worthwhile investment if you have an Intellipower 9200?
The PD+CW or WFCO are probably best for permanent installations as RV converters, chargers, and battery maintainers. The MINDer shines when you need something more portable to help maintain or improve a variety of batteries. IOW, using each tool for its intended purpose is usually best practice.
The PD+CW, WFCO, and MINDer all appear to be top of class for what they do.
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