I really appreciate the input guys, but please no need to be confrontational. To clarify my situation; I live in an apartment complex where to charge my batteries I have to remove them from the boat, take them upstairs and put them on portable chargers. Been doing that for 2 years and it is workable.
What I was hoping to do was be able to charge my batteries, cranking and trolling motor batteries while driving to the local water. Now Lake Mead is about a 45 minute drive one way for me and everything else is farther. Lake Mojave is about 1 hour and 45 minutes to Cottonwood one way. Bullhead City (access to the south end of Lake Mojave) is 2 hours of driving. Needles and Lake Havasu is about 3 hours of driving about 125 miles. Temple Bar on Lake Mead is 125 miles. Echo Bay is 76 miles and 2 hours.
I can fish about 2 full ( 12+hours) days on the Trojan SCS225's in moderate wind (to 15mph) and be drawn down to 60% of battery capacity if my portable charger gages are accurate. If it is calm or I am not using the TM a lot, I can get 3 days. I mentioned my motor size; it is carburated, but I don't know what amount of current the alternator is putting out to my cranking battery. My Lowrance X15 indicates I can bring the battery from say 11.4v to 12.7v in about 25 minutes of running at 4500 RPM. I was doing that regularly this early spring running to some coves 7 miles northeast of Callville Bay. I fished out of small boat for years so I have to alter my normal behavior to do a run and gun pattern -meaning I seldom run more than 15 miles one way locally.
Now, I don't expect a driving while charging system to recover my batteries to 100% in 90 minutes of driving. But if I could fish locally for more than 2 days, returning to the apartment nightly, without pulling the TM batteries for a recharge after a days use, a tow vehicle charging system might be worth purchasing. I know as long as I live in these apartments I will have to remove the TM batteries and charge them on the portables. For local trips knowing my cranking battery would be topped is comforting; especially night fishing during the summer.
As far as trips go. My usual behavior might be to drive somewhere, for instance I am thinking about driving to Northern CA from Las Vegas about a day and half to fish there for 2 weeks. I was thinking I could use a drive while charging system while motoring to the various ramps on Clear Lake thereby prolonging the intervals between paying for a charge in an RV park. At $25 a night just to charge batteries I can pay for a charging system in 12 RV visits; if it works?? Typical behavior might be launch, fish all day, rack the Skeeter on the trailer, drive 20 miles round trip for chores or to a camp spot, sack out, repeat next morning. If I install an on board system I fully expect to use a 115v. AC circuit to charge during trips, but them I wouldn't have to carry the portables around. Hope this clarifies what I want to do and what I expect...
I know about the 1000 watt generator . Pretty reasonable prices also. I haven't crunched all the numbers yet, but I will before spending money. I think about carrying 2 stroke fuel around and the noise for the rated output; reluctant to go this route. I also talked to my son (fishing partner) about running the # 2 gage wire with an isolater circuit from the Toyota's alternator to the back of the truck. Is this all the StayNCharge is?
So I really appreciate the feedback . I am especially interested in how you installed the various components and how they have lasted to date. Anyone running the Stealth?