The ebike batteries being of the type was a false alarm.
It turns out the higher than normal voltage on my bike batteries was an measurement error caused by a the cheap voltmeter built into the battery charger.
It indicates 13 volts for each block fully charged, which is very close to an external voltmeter reading I took.
wiring the four of them in series indicates 58 to 60 volts on the charger's voltmeter and the external voltmeter gave me 51 volts.
The inability to drive 50 miles even while averaging under 20 mph would seem to indicate that the advertized capacity of 21 amp hours is certainly not being exceeded.
The ebike batteries are plain ordinary lead acid.
The boat batteries are perhaps not a false alarm.
I charged them again after a boat trip.
I currently have refurbished "proprietary electrolyte" deka group 31 floodies to power my boat.
The battery charger, a mastech industrial multichemistry adjustable rate SCR smart charger, has settings of 1, 2, 5, or 10 amps nominal rate, a bit of a misnomer because it is does not use a constant current charging regimen.
They have such little internal resistance that they pull over 10 amps when deeply discharged and the charger is set to the 2 amp rate.
Charging ends at 14.5 volts, confirmed by two separarte outside voltmeters.
after being removed from the charger the voltage increases over a few hours to 16.8 volts.
After 30 minutes of 30 amp discharge the voltage is 16.3 volts open and still over 16 volts with a 30 amp load.
The trolling motor was tested again on a more normal canoe hullform, a 19 foot grumman squareback and failed to plane even with just one person aboard. in this case the abnormal factor was an unusually efficient boat. My modifications improved it a fair amount, it is now probably one horsepower instead of one half, it has proved itself less powerful than honda's little 2 horse aircooled fourstroke.
As anyone who read the thread i linked to in the original post will notice, I have had to fill in a lot of missing information regarding the chemistry.
The originator of the modern aluminum iron oxide battery is Prof. Ehsani of Texas A&M university.
I found this interesting article: http://groups.engin.umd.umich.edu/vi/w2 ... ani_w2.pdf
What is most relevant to the discussion at hand starts at page 61.
He does not ever claim use of heavily alloyed aluminum anodes in this publicly disclosed paper, and once uses the phrase "pure AL"
If he were to actually use straight up aluminum and an alkaline electrolyte, the battery would not be rechargeable because the aluminum upon oxidizing would quickly become aluminum hydroxide. Such a battery was briefly mentioned in the 1920s and quickly written off due to this flaw.
Being that the research was intended to develop a super battery for hybrid trucks it would be expected that there is a desire for a rechargeable battery with some hope of a long cycle life.
He throws in a hint by choosing O instead of OH as the preferred transfer ion. This would suggest a neuteral or acidic electrolyte.
The use of an aluminum-magnesium alloy was independently thought up by me as an educated guess attempting to reverse engineer his claimed results. Even in this professors other writings on this subject, now long removed from the internet for copyright infringement, never explicitly mention magnalium. Several researchers at the same time and also in the US tried to add small amounts of gallium and zirconium to the aluminum anode but failed because they either did not add enough or if they did the metal reacted with the water in the electrolyte before the battery had completed even one full cycle.
I was considering applying for a patent but Dr. Ehsani has very powerful prior disclosures and my adapting the spinel anode alloy technology from calcium zincate (used by evercel and evionyx) to aluminum spinel would likely fall under the "obvious derivative" clause for denial. I would like to argue that but there are various reasons I can't. Some of it is I can't afford a good patent attorney and some of it is I will be damned if I let a chevron/cobaysys incident happen to me like it did to Ovshinsky.
I know how these sort of things work and if I sell the patent to a battery company some fossil fuel interest will buy it off them, if not buy the whole company, then make and patent little tweaks to hold on as long as they can. My soul is worth more than a few million dollars.